3 years ago

Evaluate (7.1x 10³)+(4.6 x 10⁶)² Give your answer in standard form to 3SF

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

8 0

Answer:

2.12x10^13 is what I got

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Simplify: (4x2 − 8xy + 2y2) − (9x2 − 4xy − 7y2) (5 points)

ivann1987 [24]

Answer:

Here you go

-5x2 − 4xy + 9y2

Hope this helps

6 0

4 years ago

jenna has a piece of paper that is 84 square inches in area. it is 10 1/2 inches long. what is the length of the piece of paper

skad [1K]

Here is the solution based on the given problem above.
Given: Area of the piece of paper = 84 square inches
Width = 10 1/2 or 10.5 inches long
? = length of the piece of paper
To find the area of an object, the formula would be A= L x W
Now, let's substitute the given values above
84in2 = L(10.5in)
Now, divide both sides with 10.5 and we get 8.
L = 8 inches.
Therefore, the length of the paper is 8 inches.
Hope this solution helps.

4 0

3 years ago

-5 1/2 -4 1/4 - 6 3/4

BlackZzzverrR [31]

For this case we have an expression of mixed numbers:

$5 \frac {1} {2} = \frac {2 * 5 + 1} {2} = \frac {11} {2}\\4 \frac {1} {4} = \frac {4 * 4 + 1} {4} = \frac {17} {4}\\6 \frac {3} {4} = \frac {4 * 6 + 3} {4} = \frac {27} {4}$