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attashe74 [19]
3 years ago
13

Are the expressions 5(4x+3) and 20x+3 equivalent

Mathematics
1 answer:
Alika [10]3 years ago
8 0

Answer:

no

Step-by-step explanation:

5(4x+3) = 20x+15 which isnt 20x+3

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A line passes through the points (5, –7.5) and has a y-intercept of 10.
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Answer:y=0.5x+10

Step-by-step explanation:

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Anna11 [10]

Answer:

see explanation

Step-by-step explanation:

(a)

x² + 2x + 1 = 2x² - 2 ( subtract x² + 2x + 1 from both sides

0 = x² - 2x - 3 ← in standard form

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-----------------------------------

(b)

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2x + 8 = - 6 ( subtract 8 from both sides )

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--------------------------------------------

(c) Assuming lg means log then using the rules of logarithms

log x^{n} ⇔ nlogx

log x = log y ⇒ x = y

Given

log(2x + 3) = 2logx

log(2x + 3) = log x² , so

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x = 3 , x = - 1

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