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oksano4ka [1.4K]
3 years ago
7

1) 10 + 5x = -40 solving two step equations

Mathematics
2 answers:
BabaBlast [244]3 years ago
5 0

Answer:

-10

Step-by-step:

5x=-40-10

5x= -50

x=

kenny6666 [7]3 years ago
3 0

Answer:

10+40=5x

50=5x

X=50/5

X=10

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Rafael counted a total of 40 white cars and yellow.There were 9 times as many white cars as yellow cars how many white cars did
Naily [24]
Well 9x40 would be the solution, so what is 9x40? That will be your answer.
6 0
3 years ago
This is due in 10 minutes please help me
valkas [14]

Given:

The rate of interest on three accounts are 7%, 8%, 9%.

She has twice as much money invested at 8% as she does in 7%.

She has three times as much at 9% as she has at 7%.

Total interest for the year is $150.

To find:

Amount invested on each rate.

Solution:

Suppose x be the amount invested at 7%. Then,

The amount invested at 8% = 2x

The amount invested at 9% = 3x

Total interest for the year is $150.

x\times \dfrac{7}{100}+2x\times \dfrac{8}{100}+3x\times \dfrac{9}{100}=150

Multiplying both sides by 100, we get

7x+16x+27x=15000

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Dividing both sides by 50, we get

x=\dfrac{15000}{50}

x=300

So, the amount invested at 7% is 300.

The amount invested at 8% is

2(300)=600

The amount invested at 9% is

3(300)=900

Hence, the stockbroker invested $300 at 7%, $600 at 8%, and $900 at 9%.

7 0
2 years ago
What is the answer to the problem
andreyandreev [35.5K]
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What is the 15% service tip on a $25.50 dinner in a restraunt
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3 years ago
What is the correct notation for a function that has any given input value equal to its output value?
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Answer:

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7 0
2 years ago
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