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Alla [95]
3 years ago
6

3-2(x + 1)=2x-7 SOLVE AND HOW MANY SOLUTIONS ?

Mathematics
1 answer:
jekas [21]3 years ago
5 0

Answer:

2

Step-by-step explanation:

3−2(x+1)=2x−7

3+(−2)(x)+(−2)(1)=2x+−7(Distribute)

3+−2x+−2=2x+−7

(−2x)+(3+−2)=2x−7(Combine Like Terms)

−2x+1=2x−7

−2x+1=2x−7

Step 2: Subtract 2x from both sides.

−2x+1−2x=2x−7−2x

−4x+1=−7

Step 3: Subtract 1 from both sides.

−4x+1−1=−7−1

−4x=−8

Step 4: Divide both sides by -4.

−4x−4=−8−4

x=2

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7 0
3 years ago
A. Write an expression for the area of the shaded region.
tekilochka [14]

Answer:

A. 25x² - 64

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Step-by-step explanation:

A. The area of the shaded region = area of the whole large square - area of the 4 smaller squares

= (5x*5x) - 4(4*4)

Area of shaded region = 25x^2 - 64

B. The expression, 25x^2 - 64, is the difference of two perfect squares, 25x² and 64. Therefore, apply the rule of factoring difference of two perfect squares.

Thus, a^2 - b^2 = (a + b)(a - b)

Therefore, the expression of the are of the shaded region can be expressed in factored form as:

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4 0
3 years ago
At the beginning of the day there were 90 little fish in the pond.At the end of the day there were 52 little fish in the pond.Fi
balu736 [363]

Answer:

42%

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The first step is to calculate the difference in the number of fishes from the beginning of the day to the end of the day.

90 -52

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= 38/90 × 100

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= 42% ( to the nearest cent)

8 0
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