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3 years ago

Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.

Mathematics

2 answers:

inysia [295]3 years ago

8 0

#1.

Set up fee=$38
Cost per copy=$3

Expression

$\sf\longmapsto 38+3x$

Set up fee=$34
Cost per copy=$4

Expression

$\sf\longmapsto 34+4x$

Now

$\sf\longmapsto 4x+34=3x+38$

$\sf\longmapsto x=4$

There were 4copies

larisa [96]3 years ago

7 0

Answer:

Copies cost for the first case = $ 12

Copies cost for the second case =$16

Number of Copies = 4

Step-by-step explanation:

Let the number of copies = N

. for the first case: total cost (T1) = 38 + 3N

. for the second case: total cost (T2) = 34 + 4N

Determine the ‘N’ when the cost is equivalent

So, 38 + 3N = 34 + 4N

38 – 34 = 4N – 3N

N = 4

Therefore, number of copies = 4

Copies cost for the first case = 3 × 4 = $12

Copies cost for the second case = 4 × 4 = $16

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(w_2)(w+7) multiply and simplify your answer

alexira [117]

If there is no number in between sets of numbers, it's going to be multiplication.
So (w+2) x (w+7)

w+2, well, evaluates into w+2.
w+7 is w+7.

We'll use the FOIL method for this.
FOIL stands for:

First
Outer
Inner
Last

Let's start with the first terms. Multiply them.
So: w * w.
Combine both w's, and you get $w^2$ .

Now multiply the outer terms.
w * 7 = 7w.

Then the inner terms. 2 and w.
2 x w = 2w.

So our current numbers are: $w^2$ , 7w, and 2w.
We can add 7w and 2w together.
7w + 2w = 9w.

Now multiply the last terms.
2 x 7 = 14.

So, this simplifies to $w^2+9w+14$
Hope this helped!

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3 years ago

Read 2 more answers

Bobby calculates the mean number of goals for each of the players on a hockey team in the set {4, 7, 5, 8, 12, 2, 3, 5, 7}. Dete

katrin [286]

Answer:

2.3

Step-by-step explanation:

n = Number of data points = $9$

The data set is

$4, 7, 5, 8, 12, 2, 3, 5, 7$

Mean

$\bar{x}=\dfrac{4+7+5+8+12+2+3+5+7}{9}=5.89$

Absolute mean deviation

$\dfrac{|4-5.89|+|7-5.89|+|5-5.89|+|8-5.89|+|12-5.89|}{9}\\+\dfrac{|2-5.89|+|3-5.89|+|5-5.89|+|7-5.89|}{9}=2.3$

The mean absolute deviation of the data set is $2.3$ .

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Answer:

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Step-by-step explanation:

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3 years ago

How to check your work on a division problem.

Rus_ich [418]

Answer:

By checking it with multiplication

Step-by-step explanation:

You can use multiplication to check your division answer this way.

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If there is a remainder, add it to the multiplication product.