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steposvetlana [31]
3 years ago
13

I need to know how to Expand 2.31x10^5

Mathematics
1 answer:
arsen [322]3 years ago
5 0

Answer:

Move 5 decimal places to the right. 231,000. If it was 10^-5, you would have to move 5 decimal places to the left.

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PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (80pts)
wariber [46]

Answer:

PQ = 20

QR = 15

Step-by-step explanation:

PQ^2 = 16^2 + 12^2

PQ^2 = 400

PQ = √400 = 20

QR^2 = 12^2+9^2

QR^2 = 225

QR = √225 = 15

6 0
3 years ago
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I have two and one half squares and i want to divide them by one fourth. How many pieces would i have?
Nutka1998 [239]

2+½, is just 2½, now divided by 1/4.

let's first convert the mixed fraction to improper, and then divide.


\bf \stackrel{mixed}{2\frac{1}{2}}\implies \cfrac{2\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{5}{2}}
\\\\[-0.35em]
~\dotfill\\\\
\cfrac{5}{2}\div \cfrac{1}{4}\implies \cfrac{5}{2}\cdot \cfrac{4}{1}\implies \cfrac{5}{1}\cdot \cfrac{4}{2}\implies 5\cdot 2\implies 10

3 0
3 years ago
Can someone help me find the volume of this?
GalinKa [24]
To find the volume of any cube you need to know the length, width and height. The formula to find the volume multiplies the length by the width by the height. The good news for a cube is that the measure of each of these dimensions is exactly the same. Therefore, you can multiply the length of any side three times.
5 0
3 years ago
Why is y=-2x considered a function?
finlep [7]

Yes

Step-by-step explanation:

its a direct-variation function

6 0
2 years ago
I need help fast please!!!!!
Inessa05 [86]

Answer:

255.7 cm²

Step-by-step explanation:

A = 10²(3.14) = 314

(293/360)(314) = 255.7 cm²

8 0
2 years ago
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