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yuradex [85]
3 years ago
6

Solve for x. 2/3(x + 7) = 10

Mathematics
2 answers:
eimsori [14]3 years ago
6 0

Answer:

x = 8

Step-by-step explanation:

x+7=15

15-7=8

x=8

Delicious77 [7]3 years ago
4 0

2/3(x + 7) = 10. Divide each side by 2/3.

x + 7 = 15. Subtract each side by 7.

x = 8

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Factor each expression.<br><br> (9) 5a - 25<br><br> (10) 28 - 7x<br><br> (11) 12z + 28 - 7z - 3
Nimfa-mama [501]

Answer:

Step-by-step explanation:

Look for the GCF and then divide every term by the GCF to see what remains

(9) 5a - 25  ( GCF is 5 so take out 5 and divide every term by 5)

     5(a-5)

(10) 28 - 7x     ( GCF is 7 so take out 7 and divide every term by 7)

     7(4-x)

(11) 12z + 28 - 7z - 3=  (combine terms) =

       5x+25( GCF is 5 so take out 5 and divide every term by 5)

        5(x+5)

6 0
2 years ago
How could you use coordinate geometry to prove that segment BD and segment AC bisect one another?
____ [38]

Answer:

I think it's prove the midpoints are the same

Step-by-step explanation:

I'm not completely sure but I'm taking it right now and I believe that's the most logical answer because if they meet up at the same midpoint then they could bisect each other.

3 0
3 years ago
In 1975 1000 tons of coal was manufactured. It is 10% greater in 1976 and 5% less in 77. What is the final about of coal in 1977
Digiron [165]
In 1975 it was 1000tons, ok, well, in 1976 it went up by 10%, how much is a 10% increase?

\bf \begin{array}{ccllll}&#10;coal&\%\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;1000&100\\&#10;x&100+10&#10;\end{array}\implies \cfrac{1000}{x}=\cfrac{100}{100+10}\implies \cfrac{1000\cdot 110}{100}=x&#10;\\\\\\&#10;1100=x

well, in 1976 it was 1100 tons then, and in 1977 it went down by 5% of 1100, well, if we take 1100 to be the 100%, then what is a 5% decrease?

\bf \begin{array}{ccllll}&#10;coal&\%\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;1100&100\\&#10;x&100-5&#10;\end{array}\implies \cfrac{1100}{x}=\cfrac{100}{100-5}\implies \cfrac{1100\cdot 95}{100}=x
5 0
3 years ago
Louisa wants to buy an online movie subscription that is on sale for
DedPeter [7]

Answer:

  • 0.85c
  • one is the cost; the other is the discount

Step-by-step explanation:

a) As a fraction of the original price Louisa will pay ...

  0.85c . . . . 85% of the subscription price

__

b) Louisa's expression (-0.15c) tells the amount of the discount, not the cost of the subscription. If Louisa were to write the cost of the subscription, her expression would be ...

  c - 0.15c

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c) The expression of (a) is the cost of the subscription; the expression Louisa wrote is the amount of cost reduction due to the discount.

4 0
3 years ago
Can you help me please
Sever21 [200]

Answer:

30.5

Step-by-step explanation:

Angle B = Angle D (Alt. Exterior)

61 = 2x

61/2 = 30.5

8 0
3 years ago
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