2 years ago

True or false: you flip the sign every time you multiply or divide when you're solving an

Mathematics

1 answer:

larisa [96]2 years ago

5 0

False. You only flip when the number you are multiplying/dividing is negative.

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Step-by-step explanation:

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The expression means the product of 5 and the difference of three times r minus 10. If r = 4, the value of the expression is .

Morgarella [4.7K]

Answer:

Step-by-step explanation:

"three times r" = 3r

"three times r minus ten" = 3r - 10

"product of 5 and the difference of three times r minus ten"

= 5 (3r - 10)

given that r = 4,

the expression becomes

5 (3r - 10)

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3 years ago

Dan says he ran twice as far as Karim. Give three possibilities for the distances each could have run.

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3 years ago

help this is hard Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s

Nesterboy [21]

Answer:

x = $-\frac{3}{b}$

x = -1

Step-by-step explanation:

The given equation is,

-2(bx - 5) = 16

Dividing by (-2) on both sides of the equation,

$\frac{-2(bx-5)}{(-2)}=\frac{16}{(-2)}$

(bx - 5) = -8

By adding 5 on both the sides of the equation,

(bx - 5) + 5 = -8 + 5

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Dividing by 'b' on both the sides of the equation,

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x = $-\frac{3}{b}$

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x = -1

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2 years ago