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krok68 [10]
3 years ago
14

. What is the distance between -30 and 20 on the number line? *

Mathematics
2 answers:
fenix001 [56]3 years ago
6 0

Answer:

+50

Step-by-step explanation:

I hope it's helped........

expeople1 [14]3 years ago
5 0

Answer:

10

Step-by-step explanation:

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please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.
likoan [24]

ANSWER:

\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4

STEP-BY-STEP EXPLANATION:

We have the following equation:

f(x)=\sqrt{x}-4

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\  \\ \sqrt{f^{-1}(x)}=x+4 \\  \\ f^{-1}(x)=(x+4)^2 \end{gathered}

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4

4 0
1 year ago
One bag contains a mixture of 30% black sand and 70% red sand. A second bag
ipn [44]

Answer:

Finish the question

Step-by-step explanation:

8 0
2 years ago
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oksian1 [2.3K]
It equals 45 degrees because if you have a ~ line it means you have 45 degrees and don't forget to thank me
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3 years ago
There is a bag with only milk and dark chocolates. The probability of randomly choosing a dark chocolate is 5 12 . There are 40
Maksim231197 [3]

Answer:

There must be 96 milk chocolates.

Step-by-step explanation:

If you take the original ratio, 5:12, and replace the 5 with 40, you'd discover that 40 divided by 5 is 8. So what do you do? You multiply the 12 by 8 to get 96 so now the ratio is 40:96.

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