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Alex73 [517]
3 years ago
14

Jason needs to explain to his class how to use mental math to find the product of 400,000×50,000 how would u explain that

Mathematics
1 answer:
elena55 [62]3 years ago
4 0
You  would do 5 times 4 which is 20. then count how many zero's there are and put them after the 20.
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If F(x)=3x-2/6 which of the following is the inverse of F(x)?
lana66690 [7]

Answer:

Step-by-step explanation:

I'm seeing that f(x) is

\frac{3x-2}{6}

What you do to find an inverse is switch the x and y coordinates and then solve for the new y.  Switching the x and y gives us:

x=\frac{3y-2}{6}

Now we have to solve for the new y.  Begin by muliplying both sides by 6 to get:

6x = 3y - 2 and

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To put it back into function notation:

f^{-1}(x)=2x+\frac{2}{3}

6 0
3 years ago
Which of the following is equal to the rational expression when x doesnt equal 5? x^2 - 25/ x - 5
scoundrel [369]
The complete question in the attached figure

we have that
(x²<span> - 25)/ (x - 5)

we know
</span>(x² - 25)-------------> (Difference of two squares)----------> (x+5)*(x-5)

then

(x² - 25)/ (x - 5)<span>-------> (x+5)*(x-5)/(x-5)------------> (x+5)

the answer is the option B)
(x+5)</span>

4 0
3 years ago
Read 2 more answers
Ten times a number, x, is one-half the sum of the number and three.
kirill [66]

Answer:

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Step-by-step explanation:

Hope it helps :)

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4 0
3 years ago
Explain how you would round the numbers 33 and 89 estimate their sum
Feliz [49]
So 33 rounds to 30, because 3 is less than 5. 89 rounds to 90, because 9 is greater that 5.

then do this:

30
+90
____
120

120 is your answer! I hope I helped you!
3 0
2 years ago
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tekilochka [14]

Answer:

A and D

Reasoning:

If you look at the different values, you can see that only A and D can be correct answers.

8 0
3 years ago
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