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3 years ago

Why are the solutions to the proportions 50/x =10/20 and 10/50=20/x the same

Mathematics

2 answers:

storchak [24]3 years ago

7 0

Answer:

because both result in the equation 10x=1000 which simplifies to x=100.

ratelena [41]3 years ago

5 0

With cross multiplication you can find that they are the same. In both equations, x would be 100.

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What is the range of the function y=3 Sqrt x+8

ValentinkaMS [17]

Answer:

$(-\infty,+\infty)$

Step-by-step explanation:

The given function is

$y=\sqrt[3]{x+8}$

The range refers to the values of y for which x is defined.

We solve for x to obtain;

$y^3=x+8$

$x=y^3-8$

This is a polynomial function in y.

x is defined for all values of y.

Therefore the range is all real numbers.

$(-\infty,+\infty)$

The first choice is correct.

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3 years ago

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How do I solve 15+5-5/12. please give me the steps

gregori [183]

1) You must do division first. So divide 5/12 and get .41666666...
2) Then you add 15+5 and get 20.
3) Finally you subtract 20 and .41666666... and you get 19.5833333...
4) you can simplify 19.583333... to 19.584 if you need to.

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3 years ago

Annie bought 55.56 cubic yards of

Arturiano [62]

She paid $97.23 for the top soil. You just have to multiply 1.75 by 55.56. However, if you wanted to do this without actually solving the problem, it’s a rather easy guess. Since you know 55 times 1 is 55, choose the closest answer to it. Sometimes when it comes to math you don’t actually have to solve the problem, just take an educated guess. :)

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3 years ago

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Solve the equation using the distributive property and properties of equality. Negative 5 (a + 3) = negative 55 What is the valu

ivann1987 [24]

Answer:

negative 14

Step-by-step explanation:

took the on edge

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Question: Carbon-11 has a half-life of about 20 minutes. If we start with 200 grams, how

irakobra [83]

Answer:

C). 0.39 grams

Step-by-step explanation:

First find how many half-lifes are in 3 hours:

3 hours ÷ 20 minutes = 9 half-lifes

Find the total left:

0.5^9*200 ≈ 0.39

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3 years ago