Answer:
y = - [tex]\frac{1}{3}[/tex] x + 5
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2-y_{1} } }{x_{2-x_{1} } }[/tex]
with (x₁, y₁ ) = (0, 5) and (x₂, y₂ ) = (3, 4) ← 2 points on the line
m = [tex]\frac{4-5}{3-0}[/tex] = [tex]\frac{-1}{3}[/tex] = - [tex]\frac{1}{3}[/tex]
the line crosses the y- axis at (0, 5 ) ⇒ c = 5
y = - [tex]\frac{1}{3}[/tex] x + 5 ← equation of line
How does the graph of g(x) = (x + 4)3 − 5 compare to the parent function f(x) = x3
Transforming the function using f(x - h) shifts its graph h units to the right. Here, we have h = -4, so the graph exists shifted 4 units to the left.
What are transforming functions?
The transformations of functions describe how to graph a function that exists moving and how its shape exists being changed. There exist basically three kinds of function transformations: translation, dilation, and reflection.
Let f(x) = x³ be the original function.
When -5 exists added to the y-value, it moves the point on the graph down 5 units. Compared to f(x), g(x) exists 5 units down.
f(x) = (x + 4)³ - 5
= [x- (- 4) ]³ - 5 (shift 4 units in the negative x direction that exists 4 units left)
Transforming the function using f(x - h) shifts its graph h units to the right. Here, we have h = -4, so the graph exists shifted 4 units to the left.
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the function F(x)=log0.5^x is decreasing
true or false
Answer: True
Step-by-step explanation:
The base is less than 1.
please help me!
A scientist is comparing the bacteria population on two surfaces t days after it is cleaned with bleach.
Bacteria on the kitchen counter is initially measured at 5 and doubles every 3 days.
Bacteria on the stove is initially measured at 10 and doubles every 4 days.
1. After how many days will the bacteria population on both surfaces be equal?
2. What is the bacteria population when both surfaces have an equal population?
Answer:
They are only equal on day 0, both having 10 population.
Step-by-step explanation:
Given the bacteria on the counter is initially measured at 5 and doubles every 3 days we can generate the following geometric equation:
[tex]f(x)=10*2^{\frac{x}{3} }[/tex]
Given the bacteria on the stove is measured at 10 and doubles every 4 days we can create another equation:
[tex]f(x)=10*2^{\frac{x}{4} }[/tex]
To find how many days it will take for the bacteria population to equal the same lets set both equations equal to eachother:
[tex]10*2^{x/3}=10*2^{x/4}[/tex]
Divide both sides by 10
[tex]2^{x/3}=2^{x/4}[/tex]
Since both exponents have the same base we can set the exponents equal to eachother and solve for x:
[tex]\frac{x}{3}=\frac{x}{4}[/tex]
Multiply both sides by 3 to isolate x on the left side
[tex]x=\frac{3x}{4}[/tex]
Multiply both sides by 4 to remove fraction
[tex]4x=3x[/tex]
Subtract 3x to isolate x on the left side
[tex]x=0[/tex]
Plug x into one of our original equations
[tex]f(0)=10*2^{0/3}[/tex]
Solve
[tex]f(0)=10[/tex]
Simplify this expression
Answer:
[tex]4^{6}[/tex]
Step-by-step explanation:
When you are dividing exponents, you subtract them.
[tex]4^{9-3}[/tex] which gives you [tex]4^{6}[/tex]
You can check your work by writing it all out
[tex]\frac{4*4*4*4*4*4*4*4*4}{4*4*4}[/tex]
The 3 4s in the denominator will cancel out 3 4s in the numerator.
You are left with only 6 4s in the numerator, which is [tex]4^{6}[/tex]
How many solutions does this system of equations have? a. no solution b. 1 solution c. 2 solutions d. 3 solutions
This system of equations have infinite solution.
how many solution does this equation have?If solving an equation yields a statement that is true for a single value for the variable, like x = 3, then the equation has one solution. If solving an equation yields a statement that is always true, like 3 = 3, then the equation has infinitely many solutions.
Given that,
The system is 2x + y = 1 and 4x + 2y = 2. It is graphed below.
Solutions to a system are the intersection points. Since these two lines are the same line they intersect everywhere. There are infinitely many solutions.
2x+y = 1 ...........(1)
4x+2y = 2 .......(2)
Then from equation (2) dividing by 2 on both side
2x+y = 1
since both lines are same. They overlap to each other.it means the equation have many solution.
Hence,This system of equations have infinite solution.
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The above question is not complete.
How many solutions does this system of equations have?
(a) none
(b) exactly two
(c) infinitely many
(d) exactly one
Graph of a system of linear equations. Equation 1 is 2x plus y equals 1.. Equation 2 is 4x plus 2y equals 2. The graphs are the same line.
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.
A shipment of inexpensive digital watches, including that are defective, is sent to a department store. The receiving department selects 10 at random for testing and rejects the whole shipment if 1 or more in the sample are found defective. What is the probability that the shipment will be rejected?.
0.8926 percent of the time, the shipment will be rejected.
What is Probability?The area of mathematics known as probability deals with numerical descriptions of how likely it is for an event to happen or for a claim to be true. A number between 0 and 1 is the probability of an event, where, broadly speaking, 0 denotes the event's impossibility and 1 denotes its certainty.
According to the given information:A delivery of 50 cheap digital watches, 10 of which are flawed.
A digital watch's likelihood of malfunctioning
P = 10/50
= 0.2
Size of sample: n = 10
Additionally, if they find one or more samples to be defective, they reject the entire cargo.
Making use of the binomial probability formula:
[tex]P(x)={ }^{n} C_{x} p^{x}(1-p)^{n-x}[/tex]
The random variable x should stand in for the quantity of defective watches.
The chance that the delivery will be refused is:
[tex]\begin{aligned}&P(x \geq 1)=1-P(0) \\&=1-{ }^{10} C_{0}(0.2)^{0}(0.8)^{10}\end{aligned}[/tex]
= 1 - (0.8)
= 0.8926
As a result, 0.8926 percent of the time, the shipment will be rejected.
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I understand that the question you are looking for is:
A shipment of 50 inexpensive digital watches, including 10 that are defective, is sent to a department store. The receiving department selects 10 at random for testing and rejects the whole shipment if 1 or more in the sample are found defective. What is the probability that the shipment will be rejected
1. {26, 69, 30, 27, 19, 54, 27}
Mean:
, Median:
, Mode:
, Range:
Answer:
Mean:36
Median:27
Mode:27
Range:50
Step-by-step explanation:
Mean: 19+26+27+27+30+53+69/7=36
Median: The middle number in the sequence when arranged in ascending order which is 27
Mode: The number that appeared more than others which is 27
Range: This is the difference between the largest number and the lowest number in the sequence which is 50.
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Suppose you have a right triangle with congruent legs and a hypotenuse that measure (12sqrt(5))/5 What is the length of the smaller leg? Round to the nearest hundredth
The length of the smaller leg is 3.79
How to determine the length of the smaller leg?Represent the smaller leg with x.
So, we have:
[tex]x^2 + x^2 = ((12\sqrt5)/5)^2[/tex] -- Pythagoras theorem
This gives
2x^2 = 144/5
Divide by 2
x^2 = 72/5
This gives
x^2 = 14.4
Take the square root
x = 3.79
Hence, the length of the smaller leg is 3.79
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How many solutions does the following equation have?
23y+50+27y=50y+5023y+50+27y=50y+50
The equation 23 · y + 50 + 27 · y = 50 · y + 50 has infinite solutions.
How to infer the number of solutions of a linear equation of the form f(y) = 0
In this question we have an equation in implicit form: 23 · y + 50 + 27 · y = 50 · y + 50, we need to transform its expression into explicit form by using algebra properties:
23 · y + 50 + 27 · y = 50 · y + 50 Given
50 · y + 50 = 50 · y + 50 Commutative, associative and distributive properties / Definition of addition
0 = 0 Compatibility with addition / Existence of additive inverse / Modulative property / Result
The equivalence indicates that the equation 23 · y + 50 + 27 · y = 50 · y + 50 has infinite solutions.
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Identify the area of the kite.
Answer: А=480.
Step-by-step explanation:
Find the area of the shaded region
Step-by-step explanation:
Since the circle is inside the square, we can subtract its area from the squares area.
the squares area can be found by multiplying the height and width
[tex]8^2=64[/tex]
now to find the area of the circle we use
[tex]A=\pi r^2[/tex]
the radius is 4.
assuming pi=3.14
your answer is 50.24.
What is the length of line segment DG?
4 units
7 units
12 units
23 units
The value of x according to the secant-secant theorem is 4
Secant-secant theoremSecant-secant theorem states if two secants are drawn from an external point to a circle, then the product of the measures of one secant's external part and that entire secant is equal to the product of the measures of the other secant's external part and that entire secant.
Using the equation below;
6(x+6) = 5(5+x+3))
Expand the expression
6x+36 = 5(x+8)
6x + 36 = 5x + 40
Subtract 5x from both sides
6x-5x +36 = 40
Subtract 36 from both sides
6x - 5x = 40 - 36
x = 4
Hence the value of x according to the secant-secant theorem is 4
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Answer:
The value of x according to the secant-secant theorem is 4
Step-by-step explanation:
Quick algebra 1 question for 25 points!
Only answer if you know the answer, Tysm!
The scatter plot to make reasonable prediction is scatter plot (a)
How to determine the best scatter plot to make reasonable prediction?Before determining the best scatter plot that makes the most reasonable prediction, we need to highlight the following properties:
The curve or line on the scatter plot must pass as many points as possibleThe number of points above and below the curve or line on the scatter plot must be equal or about equalUsing the properties stated above, we have the following highlights:
Scatter plot 1 passes through 1 point and 4 points are on either sides of the plotScatter plot 2 passes through 5 points, 3 points are on one sides and 1 point on the other sideScatter plot 3 passes through 3 points, 5 points are on one sides and 0 point on the other sideScatter plot 4 passes through 0 points, all points are on one sides and 1 point on the other sideScatter plots 3 and 4 cannot be considered because they do not obey the aforementioned properties
Scatter plot 2 do not have about equal points on each sides
Hence, the scatter plot to make reasonable prediction is scatter plot (a)
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can someone pls solve this
The value of Z in given equation is -55.
According to the statement
We have given that a linear equation which is
2 = 1/5z +13
And from this equation we have to find the value of the z.
So, For this purpose
we know that the
A linear equation is an algebraic equation of the form y=mx+b. involving only a constant and a first-order (linear) term, where m is the slope and b is the y-intercept.
So, The equation is
2 = 1/5z +13
1/5z +13-2 = 0
1/5z +11 = 0
z = -11*5
z = -55
here z + 55 =0
So, The value of Z in given equation is -55.
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The height of a right rectangular prism is 3 units greater than the length of the base. the edge length of the square base is x units. which expression represents the volume of the prism, in cubic units?
The expression x³+3x² is a cubic unit representation of the prism's volume.
What is right rectangular prism?Having 6 faces, 12 edges, and 8 vertices, a right rectangular prism is a three-dimensional object. Angles between the base and sides are right angles in a right rectangular prism. Rectangles make up each of the six faces.
We have provided that to:
In a right rectangular prism, the height is three units more than the base's length.
The square base has edges that are x units long.
How much volume does a rectangular prism have?
Volume of the rectangular prism = width × length × height
V = W × L × H ....................(1)
We've indicated that the
bigger by three than the base's length, h
and the length of the base is x:
Hence,
H = X +3
Length of the base = X
Width = X
Adding the values l h and w to the formula (1) yields,
V = W × L × H
= X × X × (X+3)
= (X²) × (X+3)
= X³ + 3X³
Consequently, the phrase
X³ + 3X³
represents, in cubic units, the prism's volume.
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Find the midpoint of PM=
Help me please thanks :)
Answer:
Midpoints are (-1/2 , - 3)
Step-by-step explanation:
Given P (-4, - 2) and Q (3, - 4)
[tex]x1 = - 4 \\ x2 = 3 \\ y1 = - 2 \\ y2 = - 4[/tex]
[tex]midpoints = (\frac{x1 + x2}{2})( \frac{y1 + y2}{2}) \\ = ( \frac{ - 4 + 3}{2})( \frac{ - 2 + ( - 4)}{2}) \\ = ( \frac{ - 1}{2})( \frac{ - 2 - 4}{2}) \\ = ( \frac{ - 1}{2})( \frac{ - 6}{2}) \\ = ( \frac{ - 1}{2})( - 3)[/tex]
Suppose that a household's monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, HCF). When
graphed, the function gives a line with a slope of 1.45. See the figure below.
If the monthly cost for 22 HCF is $44.50, what is the monthly cost for 16 HCF?
?
Answer:
I hope that you are doing well, during this weird time; and that this message finds you in a good place.
To get you started on this problem, you will want to think about how to go about graphing this linear function. You want to keep in mind that you want to plot your dependent variable on the y-axis, as it changes with respect to your independent variable (plotted on the x-axis). In this problem, the cost of the water bill depends on the amount of water used, in HCF. So the graph should be plotted with cost on the y-axis, and HCF on the x-axis.
It follows that you are given the coordinates of (16, $48.37) and (22, y2); where y2 represents the cost when using 22 HCF. You are also given the slope of your line (m, in y = mx + b format). You may recall that you can set-up a slope as the change in y over the change in x, or the "rise over the run" [m = (y2-y1) / (x2-x1)]. We can set this problem up, using this equation to solve for y2 (the cost at 22 HCF) algebraically.
So we would set up the problem as 1.65 = (y2-48.37)/(22-16). We then solve by combining like-terms and using inverse operations as follows:
1.65 = (y2 - 48.37) / 6
1.65(6) = y2 - 48.37
9.9 = y2 - 48.37
y2 = $58.27
Step-by-step explanation:
Quick algebra 1 question for 10 points!
Only answer if you know the answer, quick shout-out to tariqareesha2 and MrBrainly, tysm for the help!
Answer:
speed equals distance over time.
To and fro, distance=speed×time(ts)
distance=900×18=16,200km.
therefore, ts=16,200
since, speed = distance/time
therefore, time taken is inversely proportional to speed making D the best option.
Qusai made a scaled copy of the following trapezoid. he used a scale factor less than 111. what could be the length of the longer base of the scaled copy of the trapezoid?
The length of the longer base of the trapezoid could be 0.75 units, [tex]\frac{7}{3}[/tex] units, 4 units.
What is a trapezoid?A trapezoid, commonly referred to as a trapezium, is a quadrilateral or a polygon with four sides. It has a set of parallel opposing sides and a set of non-parallel sides. The bases and legs of the trapezoid are known as the parallel and non-parallel sides, respectively.
Given: The original length of trapezoid= 6 units
The scale factor of less than 1
So, compare the given lengths with the trapezoid longer base length,
0.75 units<6 units
[tex]\frac{7}{3}[/tex] units<6 units
8.75 units< 6 units
But, 12 units> 6 units
Therefore, the length of the longer base can be 0.75, [tex]\frac{7}{3}[/tex], 4 units.
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The complete question is:
“ Qusai made a scaled copy of the following trapezoid. He used a scale factor less than 1.What could be the length of the longer base of the scaled copy of the trapezoid?
Choose 3 answers:
If the length of the minor axis of an ellipse is 6 units and the length of the major axis is 10 units, how far from the center are the foci located?
The distance from the center to where the foci is located is 8 units
How to determine the distanceThe formula associated with the focus of an ellipse is given as;
c² = a² − b²
where;
c is the distance from the focus to center a is the distance from the center to a vertex , major axis is 10 units b is the distance from the center to a co-vertex, minor axis is 6 unitsLet's use the Pythagorean theorem
Hypotenuse square = opposite square + adjacent square
Substitute the values into the formula
c² = 10² - 6²
Find the square
c² = 100 - 36
c² = 64
Find the square root
c = √64
c = 8
Thus, the distance from the center to where the foci is located is 8 units
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Quick algebra 1 question for 25 points!
Only answer if you know the answer, Tysm!
By using the linear function which models the data in the given table, if x = 2, then y is approximately: A. -11.
What is a scatter plot?A scatter plot can be defined as a type of graph which is used for the graphical representation of the values of two variables, with the resulting points showing any association (correlation) between the data set.
What is a linear function?A linear function can be defined as a type of function whose equation is graphically represented by a straight line on the cartesian coordinate.
By critically observing the graph (see attachment) which models the data in the given table, we can infer and logically deduce that the linear function is given by:
y = -5.9245x + 0.9958
If x = 2, then y is approximately:
y = -5.9245(2) + 0.9958
y = -11.849 + 0.9958
y = -10.8532 ≈ -11.
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Find all numbers whos absolute value is 8
Answer:
8 and -8.
Step-by-step explanation:
Absolute value is the magnitude of quantity, irrespective of sign; the distance of a quantity from zero. The absolute value of a number is symbolized by two vertical lines, as |8| or |-8| is equal to 8.
The absolute value of number a:
⇒ |a| = a for a ≥ 0⇒ |a| = -a for a < 0|a| = 8 ⇔ a = 8 or a = -8
ASAP PLEASE please please
[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
Let's solve ~
[tex]\qquad \sf \dashrightarrow \: \cfrac{1}{b} + 10 = \cfrac{9}{b} + 7[/tex]
[tex]\qquad \sf \dashrightarrow \: \cfrac{9}{b} - \cfrac{1}{b} = 10 - 7[/tex]
[tex]\qquad \sf \dashrightarrow \: \cfrac{8}{b} = 3[/tex]
[tex]\qquad \sf \dashrightarrow \: b = \cfrac{8}{3} [/tex]
Answer:
[tex]b=\dfrac{8}{3}[/tex]
Step-by-step explanation:
Given equation:
[tex]\dfrac{1}{b}+10=\dfrac{9}{b}+7[/tex]
Subtract 10 from both sides:
[tex]\implies \dfrac{1}{b}+10-10=\dfrac{9}{b}+7-10[/tex]
[tex]\implies \dfrac{1}{b}=\dfrac{9}{b}-3[/tex]
Multiply both sides by b:
[tex]\implies \dfrac{1 \cdot b}{b}=\dfrac{9 \cdot b}{b}-3b[/tex]
[tex]\implies 1=9-3b[/tex]
Add 3b to both sides:
[tex]\implies 1+3b=9-3b+3b[/tex]
[tex]\implies 3b+1=9[/tex]
Subtract 1 from both sides:
[tex]\implies 3b+1-1=9-1[/tex]
[tex]\implies 3b=8[/tex]
Divide both sides by 3:
[tex]\implies \dfrac{3b}{3}=\dfrac{8}{3}[/tex]
[tex]\implies b=\dfrac{8}{3}[/tex]
pls help questions 1-5 and 6-10
Step-by-step explanation:
1.on foot -270
by bus-180
byMTR- 126
BY SCHOOL BUS -144
2.68%
4.94%
5.70%
7.16
9.72
10.960
Which inequality in standard form represents the region greater than the quadratic function with zeros –3 and 6 and includes the point (–2, –16) on the boundary line?
Answer:
C
Step-by-step explanation:
y > 2x² - 6x - 36 is the inequality in standard form represents the region greater than the quadratic function with zeros –3 and 6 and includes the point (–2, –16) on the boundary line. This can be obtained by finding zeroes of each inequality to check whether the zeroes are –3 and 6 and then substituting (–2, –16) in the inequality.
Find the required inequality:To find the zeroes of the inequality we use the formula,
x = (-b ± √b² - 4ac)/ 2a, where a, b and c are the coefficients of x², x and constant respectively.
Option 1 : y > 1/2 x² - 3/2x - 9Find the zeroes,
x = (3/2 ± √9/4 + 18)
x = 3/2 ± 9/2
⇒ x = 12/2 = 6, x = -6/2 = - 3
Putting x = –2 in the inequality we get,
1/2 x² - 3/2x - 9 = 1/2 (-2)² - 3/2(-2) - 9
= 2 + 3 - 9 = - 4 ≠ -16
Therefore option 1 is incorrect
Option 2 : y > 2 x² + 6x - 36
Find the zeroes,
x = (-6 ± √36 + 288) / 4
x = (-6 ± 18) / 4
⇒ x = 12/4 = 3, x = -24/4 = - 6
Therefore option 2 is incorrect
Option 3 : y > 2 x² - 6x - 36Find the zeroes,
x = (6 ± √36 + 288) / 4
x = (6 ± 18) / 4
⇒ x = 24/4 = 6, x = -12/4 = - 3
Also , Putting x = –2 in the inequality we get,
2 x² - 6x - 36 = 2 (-2)² - 6(-2) - 36
= 8 + 12 -36
= - 16
The inequality includes the point (–2, –16) on the boundary line.
Hence y > 2x² - 6x - 36 is the inequality in standard form represents the region greater than the quadratic function with zeros –3 and 6 and includes the point (–2, –16) on the boundary line.
Disclaimer: The question was given incomplete on the portal. Here is the complete question.
Question: Which inequality in standard form represents the region greater than the quadratic function with zeros –3 and 6 and includes the point (–2, –16) on the boundary line?
a) y > 1/2 x² - 3/2x - 9
b) y > 2 x² - 6x - 36
c) y > 2 x² - 6x - 36
d) y > 1/2 x² + 3/2x - 9
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Ethan's school has a sports field with an area of 6,450.35 square yards. if the length of the field is 90.85 yards, what is the width of the field? a. 81 yards b. 77 yards c. 75 yards d. 71 yards e. 65 yards
Answer:
6450.35/90.85 = 71 yards.
Step-by-step explanation:
Situation:
An archaelogist in Turkey discovers a
spear head that contains 57%of its
original amount of C-14.
Find the age of the spear head to the nearest
year.
Enter the correct answer.
Answer:
t = 6162 years
Step-by-step explanation:
This equation takes the form of
We are given everything but the amount of C-14 at time t = 0. But we can figure it out from the info we ARE given. We are told that when the spear head is found it contains 54% of its original amount of C-14. Notice we are dealing in percents. If 54% remains when it is found, it started out with 100% of its amount. That's our N value. Filling in:
Our goal is to get that t down from the exponential position that it is currently in. To do that we will need to eventually take the natural log of both sides, because ln's and e's "undo" each other, much like squaring "undoes" a square, or dividing "undoes" multiplication. So we take the natural log of both sides. On the right side, notice that when we take the natural log, the e disappears; it's "undone", gone. Before that, though, we will simplify by dividing both sides by 54. 100/54 = 1.851851852. So, altogether...
Simplifying by plugging the log of that number into our calculator, we get
.6161861395 = .0001t and
t = 6161.8613
Rounding to the nearest year, t = 6162 years
I am thinking of a whole number greater than 0 whose square equals to its square root. How many such numbers are there?
(A) 0
(B) 1
(C) 2
(D) 4
Answer:
(B) 1
Step-by-step explanation:
The number of such integers will be the number of places where the functions f(x) = x² and g(x) = √x intersect.
Graphical solutionThe attachment shows the graphical solution to f(x) = g(x) for x > 0. There is exactly one point of intersection at x=1.
There is one such number.
8. Solve for x.
28°
X
Answer:
if X is the angle degree like I think it is, then X = 56 degrees
Step-by-step explanation:
isosceles triangles will have 2 equal base angles.
90 degree angle - 28 = 62°
62 is now each base angle.
62 times 2 angles equals 124
the final angle, x, is 180 - 124 = 56°
Mark bought gift tokens for her daughter, Sally, to use at the state fair. Sally used 13/20 of the tokens on rides. If she used 65 tokens, how many tokens had Mark bought?
Answer:
100
Step-by-step explanation:
Formulate a plan based on the conditions stated: 65/(13/20)
A fraction is divided by multiplying its reciprocal: 65x(20/13)
Remove the connecting element: 5x20
Determine the quotient or product: 100
100 tokens are bought by mark for his daughter.
What is ratio?The ratio can be defined as the number that can be used to represent one quantity as a percentage of another. Only when the two numbers in a ratio have the same unit can they be compared. Ratios are used to compare two objects.
Given, Mark bought gift tokens for her daughter, Sally, to use at the state fair. Sally used 13/20 of the tokens on rides.
let "x" be the total token she have
Since, total token she used is 65
Thus,
13/20 * x = 65
x = 100
Therefore, Mark bought for his, daughter 100 Tokens.
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