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Anika [276]
3 years ago
8

SOS if anyone could help that would be appreciated!!!❤️

Mathematics
1 answer:
Anastaziya [24]3 years ago
3 0

Answer:

See below

Step-by-step explanation:

2e)15-4x=10x+45

Solve:

15-4x=10x+45\\-4x-10x=45-15\\-14x=30\\ \boxed {x=-\dfrac{15}{7}}3(x+1)=21

Check:

15-4 \left(-\dfrac{15}{7} \right)=10\left(-\dfrac{15}{7} \right)+45

15+\dfrac{60}{7} \right)=-\dfrac{150}{7} +45

\dfrac{210}{7}  =30

30=30

3a) 3(x+1)=21

Solve:

3(x+1)=21\\3x+3=21\\3x=18\\x=6

3b) 2+3(x+1)=6x

2+3x+3=6x\\5=3x\\

x=\dfrac{5}{3}

3c) -2(2x-3)=-2

Solve:

-2(2x-3)=-2\\-4x+6=-2\\-4x=-8\\x=2

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The width of the rectangle
Nikolay [14]

Answer:

84cm^2

Step-by-step explanation:

P=2l+2w

We are given,

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Plug these into the first formula and solve for the dimensions,

length and width, of the rectangle:

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A=84cm2 OR the area of the rectangle is 84cm^2

7 0
3 years ago
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Ostrovityanka [42]
<span>3x + (x-8) = 23

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Now add 8 to both sides.
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