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mezya [45]
4 years ago
9

The sum of four times a number and five times another number is -28. The sum of nine times the first number and two times the se

cond number is 11. What is the second number?
Mathematics
1 answer:
dedylja [7]4 years ago
7 0

Answer:

  -8

Step-by-step explanation:

If we let x and y represent the first and second numbers, respectively, we can write the problem statement as the equations ...

  • 4x +5y = -28
  • 9x +2y = 11

We can multiply the first equation by -9 and add 4 times the second equation to get an equation in y alone:

  -9(4x +5y) +4(9x +2y) = -9(-28) +4(11)

  -37y = 296 . . . . . simplify

  296/-37 = y = -8 . . . . . divide by the coefficient of y

The second number is -8.

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erastova [34]

Answer:

4/9*1/2

Step-by-step explanation:

5 0
3 years ago
Evaluate the following expression:<br>7× + 5y​
irina [24]

Answer:

I think this question is incomplete or maybe incorrect but if it's OK then the answer would be 7x + 5y.

Step-by-step explanation:

the answer remains the same because the question has no like terms so no further calculations can be made.

5 0
3 years ago
Hahaha help me
ANEK [815]

Answer:

B. could be the answer for me

3 0
3 years ago
Read 2 more answers
What is the value for y?<br><br><br><br> Enter your answer in the box.
s344n2d4d5 [400]
<h3>Answer:</h3>

y = 28

<h3>Explanation:</h3>

The base angles of the isosceles triangle are congruent, so the sum of angles is ...

34° + 34° + 4y° = 180°

... 4y = 180 -68 . . . . . divide by °, subtract 68

... y = 112/4 = 28 . . . . divide by the coefficient of y

The value for y is 28.

_____

You have not asked about x in either figure.

<em>First figure</em>

Since the angles are congruent, the sides are congruent. Then ...

... 6x -3 = 5x

... x = 3 . . . . . . add 3-5x

<em>Second figure</em>

The base angles of the isosceles triangle are congruent, so

... 34° = (x -5)°

... 34+5 = x = 39 . . . . . . . divide by °, add 5.

6 0
4 years ago
Terry invested money in an account that paid 4 percent simple interest for one year. After the year ,terry had $156 in his accou
Luda [366]

Answer:

<u>The initial deposit that Terry made was $ 150</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Future Value of the account = $ 156

Interest rate = 4% simple interest = 0.04

Terry did not make any withdrawal or deposits

2. What was the beginnings amount of money in Terry's account?

Let's recall the simple interest formula for answer this question:

FV = P * (1 + rt)

Replacing with the values we have:

156 = P * (1 + 0.04)

156 = 1.04p

P = 156/1.04

P = 150

<u>The initial deposit that Terry made was $ 150</u>

3 0
4 years ago
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