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yKpoI14uk [10]
3 years ago
14

What is the solution to the system of equations2x + 3y = 40andy=x + 10?

Mathematics
2 answers:
Vladimir79 [104]3 years ago
7 0

Answer:

A is the correct answer

Step-by-step explanation:

If you plug y=x+10 in for the Y variable you just have to solve by multiplying.

1.) It should look like this:

2x + 3(x +10) = 40

2.) You will distribute the three which will make the equation look like this:

2x + 3x + 30 = 40

3.) Add like terms. Then subtract 30 from both sides. Then divide 5 by both sides to get the variable x alone.

Hope that helps

Artemon [7]3 years ago
5 0

A is the correct answer is the correcta answer

If you plug y=x+10 in for the Y variable you just have to solve by multiplying.

1.) It should look like this:

2x + 3(x +10) = 40

2.) You will distribute the three which will make the equation look like this:

2x + 3x + 30 = 40

3.) Add like terms. Then subtract 30 from both sides. Then divide 5 by both sides to get the variable x alone.

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The function f(x) = 2x2 + 2 represents the rate of a bus traveling in miles per hour. The function g(x) = x + 2 represents the t
AlekseyPX

Answer:

  (f • g)(3) = 100, the distance in miles the bus traveled

Step-by-step explanation:

The product of (miles/hour) and (hours) is (miles), so only answers with units of distance are applicable. The numbers are ...

  f(3) = 2·3² +2 = 20 . . . . miles per hour

  g(3) = 3+2 = 5 . . . . hours

so (f·g)(3) = f(3)·g(3) = 20·5 = 100 . . . . miles

This means only the first answer choice is applicable.

6 0
3 years ago
Read 2 more answers
A father is 60 years old just son is half his age how old was the boy when his father was four times his age
gayaneshka [121]

So, what you would have to do is figure out how old he is not which is 30 yrs old because it is half of 60.

So, after this you would have to find a number that would go into 60 four times which is 15.

So, your answer would be 15.


HOPES THIS HELPS!!!!

6 0
3 years ago
Evaluate the exponential expression: (2x)2−3y2=___, if x = 5 and y = 3.
777dan777 [17]

Answer:

  73

Step-by-step explanation:

Put the values of the variables where the variables are, then do the arithmetic.

  (2·5)^2 -3·3^2 = 10^2 -3·9 = 100 -27 = 73

___

Or, you can let a calculator or spreadsheet evaluate the function for you.

7 0
2 years ago
What’s the answer??????
zzz [600]

Answer:

This is a hard question I’m not sure

Step-by-step explanation:

3 0
2 years ago
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There are 7 similarly shaped figures in a set. The largest figure is 7 inches tall. Each of the other figures is 1 inch shorter
galben [10]
The first thing we must do for this case is to find the scale factor based on the dimensions of the figures.
 The largest figure is 7 inches tall. Each of the other figures is 1 inch shorter than the next larger figure.
 We have then that the smallest figure has a height of 1 inch.
 The scale factor is:
 k = (smallest figure) / (largest figure) = 1/7
 k = 1/7
 The surface area of the smaller figure is:
 A = k ^ 2 * (A ')
 Where
 A ': surface area of the largest figure.
 Substituting:
 A = (1/7) ^ 2 * (588)
 A = 12 in ^ 2
 Answer:
 
The surface area of the smallest figure is:
 
A = 12 in ^ 2
4 0
3 years ago
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