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zvonat [6]
2 years ago
13

the variable Y is directly proportional to the variable X if Y= 32 when X= 20 what is the value of x when y= 40​

Mathematics
2 answers:
Karolina [17]2 years ago
3 0

Answer:

x = 25

Step-by-step explanation:

A directly proportional relationship satisfies a proportion or two equal ratios. You can create a ratio between x and y coordinates written as y/x.

So when y = 32 and x= 20, the ratio is 32/20. If y = 40, what is x? This is the ratio 40/x. Set them equal in a proportion. Then cross multiply to solve for x.

\frac{32}{20} = \frac{40}{x}

32(x) = 20(40)

32x = 800

x = 25

MrMuchimi2 years ago
3 0

Answer:

25

Step-by-step explanation:

25

y = kx

32 = 20k

8

5

= k

40 =

8

5

x

5

8

(40) = x

25 = x

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Step-by-step explanation:

f(-3) when f(x) = -x²+1

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3 0
3 years ago
What is the answer to this question
Lesechka [4]

Remark

There's a lot you don't know here. Are DE and GF parallel? Is B a right angle? You can't assume that it is. The safest way to proceed is to give x in terms of 58 and B. You might get an answer that gives you something like 32 but I don't think you can say that unless you are told somewhere that ABC is a right angle triangle with the right angle at B.

So what to do.

<BAC = 58o                               That's because <BAC = <IAK They vertically opposite.

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<ACB = 122 - <ABC

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x = 122 - <ABC                             Answer  It's 32 if ABC is a right angle.  

6 0
3 years ago
Please answer this question I can't seem to figure it out I have even asked my parents.
nika2105 [10]

Answer:

j. Pam, Tia, Veronica, Lily (if it's youngest to oldest)

Step-by-step explanation:

If Tia is 8 yrs old and she's 2 yrs older than Pam, then Pam must be 6 yrs old. Pam si 5 yrs younger than Veronica who must be 11 + 4 = 15.

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4 0
2 years ago
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Answer:

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5 0
2 years ago
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