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Sedbober [7]
3 years ago
8

Find the value of the question mark

Mathematics
1 answer:
pogonyaev3 years ago
4 0

Answer:

<em>4.88</em>

Step-by-step explanation:

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R=x^2/y <br> x=3.8 times 10^5 <br> y=5.9 times 10^4 <br> work out the value of r
Zinaida [17]

Answer:

  2.4×10^6

Step-by-step explanation:

Put the numbers where the variables are and do the arithmetic. You can enter the numbers in scientific notation into your (scientific) calculator and have it show you the result in the same format.

  r = (3.8×10^5)^2/(5.9×10^4) . . . . . denominator parentheses are required

Please note that in the above expression, parentheses are required around the denominator number. This is because it is a product of two numbers. In your pocket calculator or spreadsheet, you can enter that value as a single number (not a product). Parentheses are not required when you can do that.

  r = (3.8²/5.9)×10^(5·2-4) ≈ 2.4×10^6

___

The "exact" value is a repeating decimal with a long repeat. We have rounded to 2 significant digits here because the input numbers have that number of significant digits.

7 0
3 years ago
A pyramid has a square base with sides 100 feet long. The original height was 75 feet.
viva [34]

Step-by-step explanation:

<u>Step 1:  Find the volume of the original pyramid</u>

<u />V = a^2*\frac{h}{3}

V=(100)^2*\frac{75}{3}

V=10000*25

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<u>Step 2:  Find the volume of the cut off</u>

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<u>Step 3:  Find the percent that still remains</u>

<u />250000-2000

248000

248000 / 250000

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99.2

Answer:  99.2%

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Find the circumstances of a circle if the area is 300 square centimeter
sergiy2304 [10]

It will be 61 rounded.

Here the link I used

https://www.piday.org/calculators/circle-calc-find-c-d-a-r/#

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3 years ago
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