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Julli [10]
3 years ago
13

What is the solution to the equation 3(2x + 5) = 3x + 4x? a x = 4 b x = 5 c x = 15 d x = 0

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
4 0

Answer:

x= 15 so the c) is right

Step-by-step explanation:

We can do it like:

3(2x + 5) = 3x + 4x

or 6x + 15 = 7x

-6x+ 6x +15 = -6x+ 7x

or 15 = x

The solution is 15

Hope you understand it.

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Answer:

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Step-by-step explanation:

first find the coordinate of B(mid point of AC):A(3,7) C(6,11)

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d=√9+16=√25=5

since B is the mid point : d/2=5/2=2.5

<h2>Another way :</h2>

B(x1+x2/2 , y1+y2/2)   , x1=3 , x2=6, y1=7, y2=11

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d=√(3-9/2)²+(7-9)²

d=√(-3/2)²+(-2)²

d=√1.5²+4

d=√6.25

d=2.5

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