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Crazy boy [7]
2 years ago
14

-x+y=15−x+y=15 and -5x-3y=27−5x−3y=27 Solve the system of equations by combining the equations

Mathematics
1 answer:
Arisa [49]2 years ago
8 0

Answer:

x = -9, y = 6.

Step-by-step explanation:

-x + y = 15

-5x - 3y = 27

From the first equation:

y = x + 15.

Substituting for y in second equation:

-5x - 3(x + 15) = 27

-8x - 45 = 27

-8x = 72

x = -9.

Now plug x = -9 into equation 1

-(-9) + y = 15

y = 15 -9 = 6.

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frez [133]
For number one you do 15-9 which is 6 and that’s the answer

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6 0
2 years ago
A health researcher fund drive has raised 18,700 that is a 22% of the goal what is the goal
crimeas [40]
Hi !

<u /><span><u>A health researcher fund drive has raised 18,700 that is a 22% of the goal what is the goal ?
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18,700 ↔ 22%
x ↔ 100%

x=\dfrac{100\times18,700}{22}\\\\\boxed{x=85,000}

The goal il 85,000.

4 0
3 years ago
Read 2 more answers
Nathan is buying a cell phon for his business. Thr regular price of the cell phone is $179. If he buys the phone in the next 2 w
NikAS [45]

Answer:

$143.2

Step-by-step explanation:

20% of 179 is 35.8

so 179-35.8 = 143.2

5 0
2 years ago
If you multiply a number by 3 and then subtract 5, you will get 40 what is the number
Paul [167]

Answer:

Number  = 15.

Step-by-step explanation:

Given : If you multiply a number by 3 and then subtract 5, you will get 40.

To find : what is the number.

Solution : We have given if you multiply a number by 3 and then subtract 5, you will get 40.

According to question :

Let the number =  x

Multiply is with 3 = 3x

Subtract 5 from it we get 40 .

3x -5 = 40

On adding both sides by 5

3x = 45 .

On dividing both sides by 3

x =  15.

Therefore, Number  = 15.

5 0
2 years ago
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The figure below shows a parallelogram PQRS:
lawyer [7]

The figure below shows a parallelogram PQRS:


A parallelogram PQRS is shown with the diagonal SQ.


The flowchart shown below shows the sequence of steps to prove the theorem: Opposite angles of a parallelogram are equal:


Which is the missing statement?


Answer - Triangle PQS is congruent to triangle RSQ

4 0
3 years ago
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