3 years ago

Is it true that the constant of the expression 18z-7(-3+2z) is 21

Mathematics

1 answer:

ZanzabumX [31]3 years ago

7 0

Yes. It would be true

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3 years ago

The points (2,-5) and (5,r) lie on a line with slope 2. Find the missing coordinate r.

Andrew [12]

Answer: r = 1

Step-by-step explanation:

The slope of a line can be represented as $\frac{y_2-y_1}{x_2-x_1}$ . Plugging in the following values would provide you with:

$\frac{(r)-(-5)}{(5)-(2)} =2$

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2 years ago

If triangle DEF is an isosceles triangle with DE is congruent to EF, find x and the measure of each side

Rudik [331]

Step-by-step explanation:

Given that,

DE = 8x - 13

EF = 5x + 17

DF = x + 21

Also,

DE = EF

which means that,

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8x - 5x = 17 + 13

3x = 30

x = 30/3

x = 10

Now,

DE = 8x - 13 = 8×10 - 13 = 80 - 13 = 67cm

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3 years ago

Jude buys a book on sale for 30% off it’s original price b what expression represents the sale price of the book

fgiga [73]

Answer: .7(b)

Step-by-step explanation:

.7(b)

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3 years ago

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alina1380 [7]

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