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4 years ago

7(x+3)=-2(x-5) Help pls?

Mathematics

2 answers:

ANEK [815]4 years ago

6 0

Answer:

$x=\frac{-11}{9}$

Step-by-step explanation:

distribute 7 into (x+3) and -2 into (x-5)

7x+21=-2x+10

add -2x on both sides

7x+2x+21=10

9x+21=10

subtract 21 on both sides

9x=-11

divide both sides by 9

x=-11/9

hope this helps

olganol [36]4 years ago

3 0

Answer:

x = -11/9

Step-by-step explanation:

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

Distribute

7x+21 = -2x+10

Add 2x to each side

7x+21 +2x = -2x+10+2x

9x +21 = 10

Subtract 21 from each side

9x +21-21 = 10-21

9x = -11

Divide each side by 9

9x/9 = -11/9

x = -11/9

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Answer:

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Step-by-step explanation:

x - 4y = 14

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3 years ago

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3 years ago

Which statement is false?(1 point)

Sergio039 [100]

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3 years ago

Cole ride his bike for 45 miles at a rate if 15 miles per hour. How long did it take him to ride in 40 miles? PLEASE HELP

tatiyna

15x=45
45/15 =3
X=3
45 miles in 3 hours

How long did it take for 40 miles?

15x=40
40/15 = 2.6666667

15 x 2= 30
15 x 2.5 = 37.5
15 x 2.6 = 39
15 x 2.7 = 40.5
1 hour equals 60 mins

Answer:
It took Cole about 2 hours and 6 mins to ride 40 miles.

5 0

3 years ago

Complete the equation: x^2+8x + _=(_)^2

pentagon [3]

Answer:

x^2+8x+16=(x-4)^2

EXPLANATION:

(a+b)^2=a2+2.a.b+b2

we have to break the middle term in 2ab here a is x then 2xb=8x, => b=4, but value of a and b to get the required equation!

8 0

3 years ago