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Svet_ta [14]
3 years ago
15

How do u do this problem

Mathematics
1 answer:
tankabanditka [31]3 years ago
7 0
15.95a + 22.95b = 2779.....multiply by -1
15.95a + 17.90b = 2385.10 (I got the 17.90 by taking 22% off of 22.95)
------------------------------
-15.95a - 22.95b = - 2779 (result of multiplying by -1)
15.95a + 17.90b = 2385
------------------------------add
- 5.05b = - 394
b = -394 / -5.05
b = 78

15.95a + 22.95b = 2779
15.95a + 22.95(78) = 2779
15.95a + 1790.10 = 2779
15.95a = 2779 - 1790.10
15.95a = 988.90
a = 988.90 / 15.95
a = 62

style A sold was 62
style B sold was 78
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write a word problem that you can solve by multiplying a mixed number by a whole number. include a solution
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Jessica is doubling a recipe that calls for 1 1/2 cups of milk. How many cups of milk in total does she need?

2 x 1 1/2 = 3

She needs 3 cups of milk in total.
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3 years ago
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What is the value of y in the equation 3 (3y - 9) = 0
iren [92.7K]

Answer:

y=3

Step-by-step explanation:

3 (3y - 9) = 0

Divide each side by 3

3/3 (3y - 9) = 0/3

3y -9 = 0

Add 9 to each side

3y -9+9 = 0+9

3y =9

Divide by 3

3y/3 = 9/3

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3 years ago
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3. If ‘A’ can finish a work in ‘n’ days then part of work finished in 1 day is: (a) 1 – n
zaharov [31]

Answer:

If ‘A’ can finish a work in ‘n’ days then part of work finished in 1 day

will be \frac{1}{n}.

Step-by-step explanation:

From the question, it is clear that

  • If ‘A’ can finish a work in ‘n’ days, then
  • we have to determine the part of work finished in 1 day.

So

let 'n' be the number of days A takes to complete the whole work

Let the whole job be denoted as '1'

Thus, the part of work finished in 1 day will be:

                      \:\frac{Total\:work}{Time\:taken\:by\:A\:to\:complete\:the\:work}\:=\frac{1}{n}

Therefore, If ‘A’ can finish a work in ‘n’ days then part of work finished in 1 day will be \frac{1}{n}.

                             

Keywords: work, word problem

Learn more about word problem form brainly.com/question/12419898

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3 0
3 years ago
What is the midpoint of (-23,-14) and (-18,2)
zloy xaker [14]

Given two coordinates point 1 as (-23,-14) and point 2 as(-18,2).

To find the midpoint we would use the formula below;

\text{midpoint(x,y)}=(\frac{x_1+x_2_{}_{}}{2},\frac{y_1+y_2}{2})

Where x1=-23, x2=-18, y1=-14, y2=2

We would substitute the values into the midpoint formula.

\begin{gathered} \text{midpoint =(}\frac{-23-18}{2},\frac{-14+2}{2}) \\ =(-\frac{41}{2},-6) \end{gathered}

Therefore, the answer is

\text{midpoint}=(-\frac{41}{2},-6)

7 0
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Answer:

y = 4x + 2

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