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xenn [34]
3 years ago
9

Simplify: 3(2x+7)-2(x+5)

Mathematics
2 answers:
pishuonlain [190]3 years ago
8 0
6x+21 -2x+10
4x 31
7.75=x
MAXImum [283]3 years ago
6 0

Answer:

4x + 11

Step-by-step explanation:

3(2x + 7) - 2(x+5)

*use distributive property to multiply what's in the parentheses by what's outside of the parentheses*

6x + 21 - 2x - 10

*combine like terms*

6x + 11 -2x

4x + 11

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The altitude of an equilateral triangle is 9 inches. Find the perimeter of the triangle in inches.
Fiesta28 [93]
If we  draw a perpendicular line from one of the vertices of the triangle we get  2 right angled triangles  each with  altitude 9 ins  and vertex angle = 30 degrees.   So:-

cos 30 = 9 /h     where h = one of the sides of the equilateral triangle

h =  9 / cos 30  =  10.392 inches

Therefore the perimeter of the triangle = 3 * 10.392 =  31.1769 ins

Answer is 31.18 inches to the nearest hundredth.
5 0
3 years ago
Sam drove 320 miles in 2.5 hours, how long will it take to drive 500 at the same rate (speed)?
marishachu [46]

Answer:

D = (55)(4.5)  

425 = 60 T  

200 = R (2.5)  

4.6 hours  

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Step-by-step explanation:


6 0
3 years ago
A house on the market was valued at $327,000. after several years the value increased by 17% by how much did the house's value i
Alisiya [41]

A house on the market was valued at $327,000. after several years the value increased by 17% by how much did the house's value increase in dollars? what is the current value of the house?

How much did the house's value increase in dollars?

327,000 x 0.17 (17%) = $55,590

What is the current value of the house?

327,000 + 55,590 = $382,590

7 0
2 years ago
A cable is 50 meters long. How long is the cable in decimeters?
dlinn [17]
500 because when you have dm multply it 
4 0
3 years ago
Read 2 more answers
8x + 4y = -104<br> 4x + y = -24
boyakko [2]

Step-by-step explanation:

there are different ways you could do it using the elimination and substitution method.

hope this helps you!

-s.

3 0
2 years ago
Read 2 more answers
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