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3 years ago

Divide. Use estimation or multiplication to check. 73÷2

Mathematics

1 answer:

Leya [2.2K]3 years ago

5 0

70/2=35 because your round down

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How to solve (2.31*10^-6)+(5.87*10^-4)

S_A_V [24]

We want to calculate the following

$2.31\cdot10^{-6}+5.87\cdot10^{-4}$

Using the properties of exponents, we have that

$10^{-6}=10^{-4}\cdot10^{-2}$

So we have

$2.31\cdot10^{-6}+5.87\cdot10^{-4}=2.31\cdot10^{-2}\cdot10^{-4}+5.87\cdot10^{-4}$

So, if factor 10^-4 on the right side, we have

$10^{-4}(2.31\cdot10^{-2}+5.87)$

Note that

$2.31\cdot10^{-2}=0.0231$

Then,

$5.87+2.31\cdot10^{-2}=5.87+0.0231=5.8931^{}$

So we have that

$2.31\cdot10^{-6}+5.87\cdot10^{-4}=5.8931\cdot10^{-4}$

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1 year ago

6th grade math help me pleaseeee

STatiana [176]

Answer:

use math- way for those and your other homework i promise it'll work!

Step-by-step explanation:

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3 years ago

When graphed, which parabola opens downward? y = –3x2 y = (x – 3)2 y = x2 – 3

In-s [12.5K]

The answer to this question is y = –3x^2, just had this on e2020 :)

6 0

3 years ago

Read 2 more answers

If f(x) = x2 + x - 8, find f(-3).

dalvyx [7]

Answer:

-17

Step-by-step explanation:

it's telling you to replace x with -3.

You have to replace all the x's with -3.

(-3)2 + (-3) - 8 = -17

5 0

2 years ago

Select all of the following ordered pairs that are in the solution set of the inequality shown.

Ilya [14]

Answer:

points on the boundary line: (0, 10), (20, 0)

solution points not on the boundary line: (100, 100)

Step-by-step explanation:

We cannot tell from the posted picture whether the boundary line is solid or dashed, so the answer above is split into two parts. If the boundary line is solid (x+2y≥20), all three listed points are in the solution set. If the boundary line is dashed (x+2y>20), only (100, 100) is in the solution set

5 0

3 years ago