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Marina CMI [18]
3 years ago
13

-3 (3c + 5) = 2 (10 - c)

Mathematics
1 answer:
Ilya [14]3 years ago
5 0

Answer:-5

Step-by-step explanation:

You need to distribute on both sides so u get

9c-15=20-2c

Move variable to left side and change the sign

-9c+2c-15=20

Move constant to right side and change the sign

-9c+2c=20+15

Connect like terms

-7c=35

Divide

C=-5

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Here is the full page please help me i´m stuck big time!
Dafna1 [17]

Answer:

<em>If you get the answer right remember, you get brainliest. Btw Im gonna try and im gonna say 1+1-3x0+30-100</em>

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
George earned a total of $342 in simple interest from two separate accounts. In an account earning 5% interest, George invested
Maslowich

Answer: he invested $6000 in the account earning 5% interest and $2100 in the other account earning 2% interest

Step-by-step explanation:

Let x represent the amount invested in the account earning 5% interest.

Let y represent the amount invested in the account earning 2% interest.

In an account earning 5% interest, George invested $1800 more than twice the amount he invested in an account earning 2%. It means that

x = 2y + 1800

The formula for simple interest is expressed as

I = PRT/100

Where

P represents the principal

R represents interest rate

T represents time in years

I = interest after t years

Assuming the duration for both investments is 1 year,

The interest on the first account would be

I = (x × 5 × 1)/100 = 0.05x

The interest on the second account would be

I = (y × 2 × 1)/100 = 0.02y

George earned a total of $342 in simple interest from two separate accounts. This means that

0.05x + 0.02y = 342 - - - - - - - - - - 1

Substituting x = 2y + 1800 into equation 1, it becomes

0.05(2y + 1800) + 0.02y = 342

0.1y + 90 + 0.02y = 342

0.1y + 0.02y = 342 - 90

0.12y = 252

y = 252/0.12 = 2100

x = 2y + 1800 = 2 × 2100 + 1800 = $6000

4 0
3 years ago
Correct answer will be marked brainlest​
lesya692 [45]
It would be 7/8 because there is 7 filled in out of 8 ANDWER: 7/8
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