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ipn [44]
3 years ago
10

Please Help With This​

Mathematics
2 answers:
andriy [413]3 years ago
6 0

Answer:

y = -4

Step-by-step explanation:

I used a calculator app called symbolab, really helpful with this type of stuff, it also explains the answer that it calculates

Fofino [41]3 years ago
3 0

Answer:

y = -4

Step-by-step explanation:

First, multiply 5 on both sides of the equation.

\frac{-2y+7}{5} x 5 = 3 x 5

It becomes -2y+7 = 15.

Now, subtract 7 from both sides.

-2y+7 - 7 = 15 - 7

It becomes -2y = 8

Finally, divide both sides by -2

-2y = \frac{8}{-2}

Your answer is y = -4.

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Write this expression so that its denominator, if any, is a positive integer.<br> 2/(3+sqrt(7))
Tanzania [10]

Answer:

The Answer is 3 - sqrt7

Step-by-step explanation:

2/3 + sqrt7   the starting equation

You multiply it by the conjugate which is 3 - sqrt7

= 2(3 - sqrt7) / (3 + sqrt7) (3 - sqrt7)  the equation after you multiply by 3 - sqrt7

(3 + sqrt7) (3 - sqrt7) = 2

= 2(3 - sqrt7) / 2    the equation after you simplify (3 + sqrt7) (3 - sqrt7)

Divide out the 2's

= 3 - sqrt7/1    the equation after you divide out the 2's

= 3 - sqrt7  is THE ANSWER

7 0
2 years ago
Find the amount of $8000 for 3 years,compounded annually at 5% per annum. Also ,find the compound interest
Triss [41]

Answer:

$9261

$1261

Step-by-step explanation:

Principal: $8000

Interest rate: 5% PA compounded annually

Time: 3 years

  • Sum = $8000*(1.05)³ = $9261
  • Interest = $9261 - $8000 = $1261
3 0
3 years ago
9 boys can paint a basketball court in 3 hours how long should 1 boy take working at the same rate​
GaryK [48]
1 boy can work about 0.3 hours
i think that’s the answer,but good luck
7 0
3 years ago
Make x the subject of the formula<br> Y=3x+2
andrew-mc [135]

Answer:

(y-2)÷3=x

Step-by-step explanation:

y=3x+2

y-2=3x

(y-2)÷3=x

This answer could also be written as a fraction: y-2 over 3, equals x.

5 0
3 years ago
Which ratio is equivalent to 4/9
Dmitrij [34]

Answer:

D. 12/27

Step-by-step explanation:

Ratios are just like fractions

12 ÷ 3 = 4

27 ÷ 3 = 9

4/9 is 12/27 simplified by 3

5 0
3 years ago
Read 2 more answers
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