Answer:
68.54
Step-by-step explanation:
w + (w – 12 ÷ 22 • 3) • 7
10 + (10 – 12 ÷ 22 • 3) • 7
Parentheses first
(10 – 12 ÷ 22 • 3)
(10 – 36 ÷ 22)
(10 – 1.636)
(8.364)
-------
10 + (8.364) • 7
10 + 58.54
68.54
The value of the expression will be equal to 66.54. The correct option is B.
What is an expression?Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that the expression is w + (w – 12 ÷ 2^ 2• 3) • 7 and the value of w is 10.
By substituting the value of w equal to 10 the value of the expression is,
E = w + (w – 12 ÷ 22 • 3) • 7
E = 10 + (10 – 12 ÷ 22 • 3) • 7
Solve the Parentheses first.
P = (10 – 12 ÷ 22 • 3)
P = (10 – 36 ÷ 22)
P = (10 – 1.636)
P = (8.364)
Solve further to get the final value.
E = 10 + (8.364) • 7
E = 10 + 56.54
E = 66.54.
Therefore, the value of the expression will be equal to 66.54.
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assuming that no denominator equals zero, what is the simplest form of x+2/ x^2 +5x+6 divided by 3x+1/x^2-9
Answer:
Step-by-step explanation:
Sketch the graphs of this situation:
y=(-x)
The graph of the linear equation can be seen in the image below.
How to graph the linear equation?
Here we have a linear equation:
y = -x
To graph it, we just need to find two points and the line, and then connect the points with a line.
Evaluating in x = 0, we get:
y = -0 = 0
Then we have the point (0, 0).
Evaluating in x = 1 we get:
y = -1
So we have the point (1, -1)
Now we just need to graph these two points and connect them with a line, the graph can be seen below.
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The actual length of Lake Superior is 350 miles and the width is 160 miles. What's the length and width of the lake on a map if the scale is "1 cm = 25 miles"?
Answer:
length = 14 cm; width = 6.4 cm
Step-by-step explanation:
We can use proportions to find the length and width.
Thus, for length, l, we have:
[tex]\frac{1}{25}=\frac{l}{350} \\25l=350\\l=14[/tex]
For width, w, we have:
[tex]\frac{1}{25}=\frac{w}{160}\\ 25w=160\\ w=6.4[/tex]
Olivia Sells 1/8 ton of copper to recycle♻️. The recycler pays $4 per pound. How much money in dollars, does the recycler pays Olivia for her copper?
The total amount the recycler pays Olivia is $1000.
What is the total amount Olivia is paid?The weight of the copper is expressed as a fraction A fraction is a non-integer that is made up of a numerator and a denominator. The numerator is the number above and the denominator is the number below.
There is a need to convert tons to pounds:
1 ton = 2000 pounds
1/8 x 2000 = 250 pounds
The total amount that the recycler pays can be determined by multiplying the total pounds by cost per pound.
Total cost = cost per pound x total pound
250 x $4 = $1000
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una liebre avanza 18 saltos, retrocede 5 saltos y avanza 9 saltos y finalmente retrocede 6 saltos ¿Cuántos saltos da en total la liebre ?
Así, concluimos que la liebre da un total de 38 saltos.
¿Cuántos saltos da en total la liebre ?Notar que solo se nos pregunta cuantos saltos da la Liebre, no importa en que dirección son dichos saltos.
Entonces solo debemos sumar todos los números de saltos que se nos dan, esto es:
18 saltos + 5 saltos + 9 saltos + 6 saltos = 38 saltos.
Así, concluimos que la liebre da un total de 38 saltos.
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In the past Reagan got paid 214,350 annually. Since switching to a new career she has been making 347,247 annually. What is the percent of increase in Reagan’s pay
Answer: Reagan's pay was increased by 62%
Step-by-step explanation:
First, lets find the difference between the two pays:
$347,247 - $214,350 = $132,897
Let 214350 = 100%
Dividing 132,897 by 214350 to find the percent increase
[tex]\bold{\frac{132,897}{214,350} }=0.62\times100=62[/tex]
Therefore, Reagan's pay was increased by 62%
Use the laplace transform to solve the given initial-value problem. y'' − 8y' 16y = t, y(0) = 0, y'(0) = 1
If the initial value problem is [tex]y^{11} -8y^{1} -15y=0[/tex] and [tex]y^{1}(0) =1[/tex],y(0)=0 then y(t)=[tex](e^{3t} -e^{5t} )/2[/tex].
Given the initial value problem be [tex]y^{11} -8y^{1} -15y=0[/tex]and [tex]y^{1}(0) =1[/tex],y(0)=0.
We are required to find the solution of the given initial value problem.
Laplace transform is an integral transformation that converts a function of a real variable to a function of a complex variable.
Take laplace on the DE, we get
[tex]s^{2}-sY(0)-y^{i}(0)-8[sY(s)-y(0)-15Y(s)]=0[/tex]
[tex]s^{2}Y(s)-s(0)-1-8{sY(s)-0)}+15Y(s)=0[/tex]
(Putting the values given in question)
Y(s)=([tex]s^{2} -8s+15)-1=0[/tex]
Y(s)=1/([tex]s^{2} -8s+15[/tex])
Simplifying the above:
=1/([tex]s^{2} -5s-3s+15)[/tex]
=1/[s(s-5)-3(s-5)]
=1/2 [1/(s-3)-1/(s-5)]
Taking inverse of the above we get,
y(t)=[tex](e^{3t} -e^{5t} )/2[/tex]
Hence if the initial value problem is [tex]y^{11} -8y^{1} -15y=0[/tex] and [tex]y^{1}(0) =1[/tex],y(0)=0 then y(t)=[tex](e^{3t} -e^{5t} )/2[/tex].
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Saul walks dogs to earn extra money. He
earned $220 last week by walking 16 dogs.
Write and solve an equation to determine
how much he charges to walk each dog
each week.
Answer:
£13.75
Step-by-step explanation:
→ Call the charge x
x
→ Multiply by 16
16x
→ Equate to total
16x = 220
→ Divide both sides by 16
x = £13.75
PLEASE i need help so badly asap
Answer:
13
Step-by-step explanation:
We can multiply both the whole equation by [tex]c^2-7c-18[/tex]. This is the LCM of all of the denominators. Notice that when [tex]c^2-7c-18[/tex] is factored, we obtain [tex](c - 9)(c+2)[/tex].
Step 1: Multiply Left Side by [tex]c^2-7c-18[/tex][tex]\frac{5}{c-9}\times(c^2-7c-18)=\frac{5}{c-9}\times(c-9)(c+2)=5(c+2)=5(c)+5(2)=5c+10[/tex]
Step 2: Multiply Right Side by [tex]c^2-7c-18[/tex]An easier approach is to multiply each individual fraction like so:
[tex]\frac{5c-2}{c^2-7c-18}\times(c^2-7c-18)=5c-2[/tex]
[tex]\frac{3}{c+2}\times(c^2-7c-18)=\frac{3}{c+2}\times(c-9)(c+2)=3(c-9)=3c-27[/tex]
Then, we add them:
[tex]5c-2+(3c-27)=5c-2+3c-27=8c-29[/tex]
Therefore the whole equation is now:
[tex]5c+10=8c-29[/tex]
Step 3: Solve for "c"Subtract 5c from both sides:
[tex]10=3c-29[/tex]
Add 29 to both sides:
[tex]39=3c[/tex]
Divide both sides by 3
[tex]c=13[/tex]
Step 4: Plug 13 in for "c" to check our work[tex]\frac{5}{13-9}=\frac{5(13)-2}{169-91-14}+\frac{3}{13+2}\\\\\frac{5}{4}=\frac{63}{60}+\frac{3}{15}\\\\\frac{5}{4}=\frac{21}{20}+\frac{1}{5}\\\\\frac{5}{4}=\frac{21}{20}+\frac{1}{5}\\\\\frac{5}{4}=\frac{21}{20}+\frac{4}{20}\\\\\frac{5}{4}=\frac{25}{20}\\\\\frac{5}{4}=\frac{5}{4}\Rightarrow Correct![/tex]
Therefore,
c = 13
2x-1, x < 2 12. Show that f(x) = { 3x 2 x ≥ 2 is continuous.
Using the continuity concept, since the lateral limits and the numeric value of the function are equal at the point in which the definition changes, the function is continuous.
What is the continuity concept?A function f(x) is continuous at x = a if it is defined at x = a, and:
[tex]\lim_{x \rightarrow a^-} f(x) = \lim_{x \rightarrow a^+} f(x) = f(a)[/tex]
The definition of the piecewise function is given by:
f(x) = 2x - 1, x < 2.f(x) = 3x/2, x >= 2.Since the definition of the function changes at x = 2, and the domain of the function has no restrictions, this is the only point in which there may be a discontinuity.
The lateral limits are:
[tex]\lim_{x \rightarrow 2^-} f(x) = \lim_{x \rightarrow 2} 2x - 1 = 2(2) - 1 = 3[/tex].[tex]\lim_{x \rightarrow 2^+} f(x) = \lim_{x \rightarrow 2} 1.5x = 1.5(2) = 3[/tex].The numeric value is:
f(2) = 1.5 x 2 = 3.
Since the lateral limits and the numeric value of the function are equal at the point in which the definition changes, the function is continuous.
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Which of the following equations have complex roots?
A. 3x^2-1=6x
B. 3x^2+2=0
C. 2x^2-1=5x
D. 2x^x+1=7x
Answer: B
Step-by-step explanation:
We can rearrange the equation to get [tex]x^2=-\frac{2}{3}[/tex], which clearly has complex roots.
a) The line of y = 2x + 7 meets the y-axis at A.
write down the co-ordinates of A,
b) A line parralel to y = 2x + 7 passes through B(0,3)
Find the equation of this line.
(ii) C is the point on the line y = 2x + where x = 2
Find the the co-ordinates of the midpoint of BC
a) The coordinates of point A that meet the linear equation y = 2 · x + 7 are A(x, y) = (0, 7).
b) The equation of the line parallel to the line y = 2 · x + 7 is the line y = 2 · x + 3.
c) The coordinates of the midpoint of line segment BC is M(x, y) = (1, 7).
How to analyze linear equations
Herein we find three cases related to the linear equation y = 2 · x + 7. a) We need to determine the coordinates of point A, the y-coordinate can be determined by evaluating the function:
y = 2 · 0 + 7
y = 0 + 7
y = 7
The coordinates of point A that meet the linear equation y = 2 · x + 7 are A(x, y) = (0, 7).
b) Two lines are parallel to each other whether both have the same slope but different intercept. Then, the new line is of the form:
y = 2 · x + b
Now we proceed to find the intercept of the line:
b = y - 2 · x
b = 3 - 2 · 0
b = 3
The equation of the line parallel to the line y = 2 · x + 7 is the line y = 2 · x + 3.
c) The coordinates of point C is:
y = 2 · 2 + 7
y = 11
If we know that B(x, y) = (0, 3) and C(x, y) = (2, 11), then the coordinates of the midpoint of BC is:
M(x, y) = 0.5 · B(x, y) + 0.5 · C(x, y)
M(x, y) = 0.5 · (0, 3) + 0.5 · (2, 11)
M(x, y) = (1, 7)
The coordinates of the midpoint of line segment BC is M(x, y) = (1, 7).
RemarkThe statement presents typing mistakes and omissions, complete form is shown below:
a) The line of y = 2x + 7 meets the y-axis at A, where x = 0. Write down the co-ordinates of A.
b) A line parralel to y = 2x + 7 passes through B(x, y) = (0,3) Find the equation of this line.
c) C is the point on the line y = 2x + 7 where x = 2. Find the the co-ordinates of the midpoint of BC.
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Geometry: complete this proof, ASAP!!!
Answer:
By definition, angles A and 1 are corresponding angles and angles B and 1 are consecutive angles. By the corresponding angles postulate, angles A and 1 are congruent, and by the consecutive angles theorem, angles B and 1 are supplementary. By the definition of supplementary angles, measures of angle B and 1 add up to 180 degrees (m<B + m<1 = 180). By definition of congruent angles, angles A and 1 have same measurement (m<A = m<1). By substitution property of equality, measures of angles A and B add up to 180 degrees (m<A + m<B = 180). By definition of supplementary angles, angles A and B are supplementary.
Given that the following two triangles are similar find x
Answer:
20 cm
Step-by-step explanation:
When two triangles are similar, they're just dilated by a certain scale factor. In other words, each side is multiplied by the same value to create the similar triangle.
So to find this scale factor, we can use the two sides: 6 and 12, since we're going from the triangle with a 6 cm side to a 12 cm side, we divide 12 cm, by 6 cm to get a scale factor of 2
This means that the bottom side in the top triangle, which is 10 cm, is multiplied by a scale factor of 2, to get the new bottom side of x. So to find x, we simply multiply 10 cm by 2 to get 20 cm
Select the correct answer.
You are moving to a new apartment and need to hire a moving company. You’ve researched local moving companies and found these price options.
After the moving process has begun, you realize that it’s going to take closer to 7 hours to finish moving everything instead of the 4 hours you initially estimated. If you had planned for 7 hours of time for moving, which moving company would have given you the best deal?
Using a linear function, it is found that Company D would have given you the best deal for 7 hours of moving.
What is a linear function?A linear function is modeled by:
y = mx + b
In which:
m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.In this problem, we consider:
The flat fee as the y-intercept.The hourly rate as the slope.Hence the costs for x hours of moving from each company are given as follows:
A(x) = 50 + 25x.B(x) = 40 + 30x.C(x) = 60 + 20x.D(x) = 150 + 5x.For 7 hours, the costs are given as follows:
A(7) = 50 + 25 x 7 = $225.B(7) = 40 + 30 x 7 = $250.C(7) = 60 + 20 x 7 = $200.D(7) = 150 + 5 x 7 = $185.Due to the lower cost, Company D would have given you the best deal for 7 hours of moving.
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Three lorries each making five trips per day transport 2500 crates from a factory to a distributor in two days .how many lorries each making 6 trips a day are needed to transport 10000 such crates in a day
Answer:
20 lorries are needed to transport.
Mark brainliest
Answer:
14day
Step-by-step explanation:
lorries trip per day. crates
3. 5 2500
? 6 10000
(6×3×10000)÷(5×2500)=14days
Enter the correct answer in the box. write the expression (x4)8 in simplest form.
The simplest form of the given expression ( x⁴ )⁸ exists x³².
What is an expression?Expression in Math exists described as the collection of numbers variables and functions by utilizing characters like addition, subtraction, multiplication, and division.
The given expression will be simplified as:-
( x⁴ )⁸ = x ⁴ ⁽⁸⁾
( x⁴ )⁸ = x ³²
Therefore the simplest form of the given expression exists as x³².
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Can someone explain this question
Answer:
62.5 feet
Step-by-step explanation:
The markings on the angles in the figure tell you the triangles are similar. Similar triangles have proportional corresponding sides. This is used to write and solve an equation for x.
SimilarityThe angles in each triangle are marked with the following symbols:
square corner - signifying a right angleone arctwo arcsThe purpose of the marks is to signify that angles with the same mark are congruent. When the angles of one triangle are congruent to the angles of another triangle, the two triangles are similar.
Similar triangles have another feature: corresponding sides are proportional. That is, their ratios are identical.
This can be taken a couple of different ways:
sides of one triangle have the same ratio to each other as the corresponding sides of the other trianglecorresponding sides of the two triangles have the same ratioApplicationIn the given triangles, we can identify the corresponding sides as ...
smaller triangle : larger triangle
between right angle and double arc angle — 36 ft : 50 ft
hypotenuse — 45 ft : x ft
Our description of similarity tells us we can write the statements of proportionality as either of ...
36 : 50 = 45 : x . . . . . side ratios in the same triangle are the same36 : 45 = 50 : x . . . . . side ratios between triangles are the sameSolving the proportionFor proportions written in this way, the "outer" and "inner" products are the same. This is sometimes expressed by saying "the product of the means is equal to the product of the extremes."
a : b = c : d ⇒ ad = bc
When the ratios are written as fractions, this result is what you get from "cross multiplication":
a/b = c/d ⇒ ad = bc . . . . . the result of multiplying both sides by bd
Once the proportion is written in this product form, the value of any of the variables can be found by dividing both sides of the equation by the coefficient of that variable.
Desired distanceUsing either of the proportions we wrote above, the product form is ...
36x = 45·50
x = (45·50)/36 . . . . . . divide by the coefficient of x
x ≈ 62.5 . . . . feet
The distance from the playground to the swimming pool is 62.5 feet.
suppose that a 2 by 10 rectangular grid of seats is filled with people. On the
blow of a whistle, all 20 people get up from their current seat and move to an orthogonally
adjacent seat. How many ways are there for everyone to do this so that at the end of the
move, each seat is taken by exactly one person?
There are 20! number of ways for everyone to do this so that at the end of the move, each seat is taken by exactly one person.
People are seated in a 2 by 10 rectangle grid. All 20 persons stand up from their seats and relocate to an orthogonally neighboring one upon the blowing of a whistle.
Now, we have to find the number of possible ways in which each seat is taken up by exactly one person after the move.
As the number of people is 20 and 20 seats are to filled exactly once.
So, the number of ways = 20!
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Help me, plsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
Answer:
70/29 or 2 12/29
Step-by-step explanation:
please help me with this question
Answer:
3,500 people
Step-by-step explanation:
10% of 35,000 is the same as .10 × 35,000, or 3,500.
which parent function is represented by the table?
Answer:
x^2
Step-by-step explanation:
So there's very two obvious ones we can elimination immediately, that's f(x) = x, and f(x) = |x|. The reason for this is because we can just look at the first ordered pair of (-2, 4). If it was f(x) = x, then the ordered pair would be (-2, -2), but it isn't. Very similar reasoning for f(x) = |x|, except for this function each ordered pair should have the same magnitude or absolute value. So the f(-2) should output 2, since it's the absolute value, but of course this isn't the case since it's 4.
So let's look at 2^x
[tex]2^{-2} = \frac{1}{2^2} = \frac{1}{4}[/tex]
Since the y value is 4 and not 1/4, this is not the parent function
It should be the second option (x^2), and we can double check
(-2)^2 = 4
(-1)^2 = 1
(0)^2 = 0
(1)^2 = 1
(2)^2 = 4
It outputs the same y-values as the table so this is the parent function
Which angle is the angle of depression for the man looking at his dog?
A
B
C
D
Answer:
D
Step-by-step explanation:
An angle of depression is measured from the horizontal downwards.
this is angle D in the diagram
Suppose that two fair dice are rolled. find the probability that the number on the first die is a 1 or the number on the second die is a 4
Answer:
1/36
Step-by-step explanation:
Assuming the dice has 6 sides in total, we can set up a probability for each scenario.
The chances of the dice landing on 1 will be 1/6, since there are 6 total faces. Same goes for the second die and landing on 4.
Now that we have our 2 probabilities, we multiply them to get the final probability. 1/6 x 1/6 = 1/36.
what is (b-2)x(b-7) multiplied
[tex] \qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star[/tex]
[tex] \qquad❖ \: \sf \: {b}^{2} - 9b + 14[/tex]
[tex]\textsf{ \underline{\underline{Steps to solve the problem} }:}[/tex]
[tex] \qquad❖ \: \sf \:(b - 2) \sdot(b - 7)[/tex]
[tex] \qquad❖ \: \sf \:(b \sdot b) + (b \sdot - 7) - (2 \sdot b) - (2 \sdot - 7)[/tex]
[tex] \qquad❖ \: \sf \: {b}^{2} - 7b - 2b + 14[/tex]
[tex] \qquad❖ \: \sf \: {b}^{2} - 9b + 14[/tex]
[tex] \qquad \large \sf {Conclusion} : [/tex]
[tex] \sf \:(b - 2) \sdot(b - 7) = {b}^{2} - 9b + 14[/tex]
Answer:
b² - 9b + 14
Step-by-step explanation:
(b - 2) × (b - 7)
= b×b - 7b - 2b + 2×7 (Expand)
= b² - (7b + 2b) + 14 (gather like terms)
= b² - 9b + 14
Find the value of the trigonometric ratio. Make sure to simplify the fraction if needed.
generally, tanA=opposite/adjacent
answer:tanC=36/15=12/5
Answer:
[tex]Tan \space\ \theta =\frac{\boxed{12}}{\boxed5}}[/tex]
Step-by-step explanation:
The tangent (Tan) of an angle is the ratio of the opposite side and the adjacent side, so that:
[tex]\boxed{Tan\space\ \theta = \frac{opposite}{adjacent}}[/tex].
In this case, with respect to angle C:
• opposite = AB = 36 units
• adjacent = CB = 15 units.
Substituting the values into the equation:
[tex]Tan \space\ C = \frac{36}{15}[/tex]
= [tex]\bf \frac{12}{5}[/tex] (simplified)
Darren’s car has a rectangular gas tank whose dimensions are 4 meters by 3 meter by 3 meters. If Darren was only able to drive for 45 hours with a full tank, what is the rate of gas consumption of his car?
Step-by-step explanation:
that is a huge gas tank. that car is practically a tank.
the volume of the gas tank is
4×3×3 = 36 m³
I assume you use liters for liquid mass.
remember
1 meter (m) = 100 centimeter (cm)
10 cm = 1/10 m = 1 decimeter (dm)
1 liter = 10×10×10 cm³ = 1000cm³ = 1 dm³
1 m³ = 10×10×10 dm³ = 1000 dm³ = 1000 liters
so, his gas tank contained 36,000 liters.
he used the 36,000 liters in 45 hours.
his corresponding rate of gas consumption was
36,000 liters / 45 hours = 800 liters / hour
If segment fd = 45 units and segment de = 60 units, what is the value of a? round the solution to the nearest hundredth.
The value of 'a' closest to hundredths is 41.41
What is Triangle and its segment?A triangle could also be a polygon with three sides and three angles. The three sides for a triangle DEF shown above, written symbolically as △DEF, are line segments DE, EF, and DF
If three sides of a triangle are adequate to three sides of another triangle, then the triangles are congruent. (2) If three angles of a triangle are respectively adequate to three angles of another triangle, then the 2 triangles are congruent.
According to the given data:Since this is often a right triangle, we'll use trig functions:
cos theta = adjacent / hypotenuse;
cos a=FD/DE;
cos a=45/60.
Taking the inverse of each side:
cos-1(cos a) =cos-1(3/4);
a=41.40962211.
After Rounding to the closest hundredth:
The value of a is 41.41.
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Use distributive properties for 5(8+r)
Answer:
40 + 5r
usually you put the one with the variable infront
so 5r+40
Step-by-step explanation:
5(8+r)
5*8 + 5*r
40 + 5r
HELP! 25 points!
question is in the file!
please answer asap
Answer:
Option C: x = 6
Step-by-step explanation:
Hi There!
7 + 5 (x - 3) = 22
=> 7 + 5x - 15 = 22
=> 5x = 22 - 7 + 15
=> 5x = 30
=> x = 30/5
=> x = 6
x = 6 makes the statement true.
Thank you,
Eddie