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3 years ago

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y and x have a proportional relationship, and y = 7 when x = 2. What is the value of x when y = 21? Enter your answer in the box

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1 answer:

Jlenok [28]3 years ago

5 0

when y=21 x =6 , hope this helps

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Answers: a/b= 8/2 B: 3.2/2= a/b C: b/6.4 = 8/5 D: 2/ 3.2= b/a

scoundrel [369]

Answer:

b/6.4 = 8/5

Step-by-step explanation:

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2 years ago

What is the solution set of |–x| = –10?

dem82 [27]

|a| = b gives
a =b or a = -b

so,
|-x| = -10
gives
-x = -10 or -x = 10
x = 10, -10

now let us verify,
when x = 10, |-10| = +10 and it is not = -10
so, x= 10 is NOT a solution.

when x = -10, |-(-10)| = |10| = 10 and it is not = -10
so, x= -10 is NOT a solution.

hence, this equation does not have a solution.

If we know that |...| can never be negative, we can directly deduce that this equation does not have any solution.

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2 years ago

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Jack says if you multiply a number by a fraction the product will always be smaller than what you started with. Is he correct? W

Alexus [3.1K]

Answer:

true and false

Step-by-step explanation:

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3 years ago

7.1 + 16.04 – .2 = ?

skad [1K]

The answer is 22.94 because of reasons and math and decimals and stuffy I'm not going to go in to detail somebody else can because I'm not with the math stuff

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3 years ago

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Justin needs to earn a score of more than 80 on his next math test to earn a B for the semester. Which inequality shows the grad

zvonat [6]

Answer:

b

Step-by-step explanation:

Justin's score has to be greater than 80. the appropriate inequality sign is >

Note that

> means greater than

< means less than

≥ means greater than or equal to

≤ less than or equal to

On the number line, since the score has to be greater than 80, the line would start from 80 and end on 95

> or < is represented by unfilled circle

≤ or ≥ is represented by filled circle

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2 years ago