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3 years ago

If x = -1, then which of the following equations makes a true statement?

Mathematics

1 answer:

n200080 [17]3 years ago

7 0

Answer:

C. -3x + 15 = 18

Step-by-step explanation:

substitute x with -1

-3(-1) + 15 = 18

a negative times a negative equals a positive

3 + 15 = 18

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kondor19780726 [428]

If the circumference of a circle is changed from 9 cm to 3 cm, then the diameter decreases by a factor of 3.

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2 years ago

Ben went to the hardware store and bought 7 pieces of rope of equal length. The total length of the ropes was 56 meters. How lon

Harman [31]

Answer:

8 meters

Step-by-step explanation:

56 / 7 = 8

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3 years ago

a red hot ar balloon is 100 feet off the ground and is rising at a rate of 8 feet per second. a green hot air balloon is 160 fee

zhenek [66]

Answer:

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Step-by-step explanation:

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3 years ago

Please help me answer the question in the picture

Genrish500 [490]

$338 / 2 = $169

A = a^2 = 169
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answer
13ft

6 0

3 years ago

Read 2 more answers

-4rover4+5rover3 please help me

Alchen [17]

$Solution, \frac{-4r}{4}+\frac{5r}{3}=\frac{2r}{3}$

$Steps:$

$\frac{-4r}{4}+\frac{5r}{3}$

$\frac{-4r}{4},\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b},\\-\frac{4r}{4},\\\mathrm{Divide\:the\:numbers:}\:\frac{4}{4}=1,\\-r,\\-r+\frac{5r}{3}$

$\mathrm{Convert\:element\:to\:fraction}:\quad \:r=\frac{r3}{3},\\\frac{5r}{3}-\frac{r\cdot \:3}{3}$

$\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c},\\\frac{5r-r\cdot \:3}{3}$

$5r-r\cdot \:3,\\\mathrm{Add\:similar\:elements:}\:5r-3r=2r,\\\frac{2r}{3}$

$The\:Correct\:Answer\:Is\:\frac{2r}{3}$

$Hope\:This\:Helps!!!$

$-Austint1414$

5 0

3 years ago