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yarga [219]
3 years ago
8

__________________________________________

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
4 0

Answer:

3.3 x 10⁻⁴

Step-by-step explanation:

Given expression:

           \frac{2.64 x 10^{-3} }{8.0 x 10^{0} }

 To solve this problem;

    10°   = 1

So;

             \frac{2.64 x 10^{-3} }{8.0}

    =  \frac{2.64}{8}  x 10⁻³

    = 0.33 x 10⁻³

    = 3.3 x 10⁻¹  x 10⁻³

     = 3.3 x 10⁻⁴

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Answer:

see explanation

Step-by-step explanation:

The integers between - 4 and 4 are

- 3, - 2, - 1, 0, 1, 2, 3

Note this does not include - 4 and 4

(2)

Integers less than - 10 are

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3 0
4 years ago
Can someone help me with these questions. Even if you can only help me with one, it would be appreciated.
prohojiy [21]

Try these solutions:

<u>Task 1.</u>

a) the required angle is arctan(CG/AC);

b) according to the condition CG=AE=11.4 (cm.);

c) BC=EH=9.6 (cm.), then

AC=\sqrt{AB^2+BC^2}=\sqrt{18.4^2+9.6^2}=\sqrt{430.72} (cm.);

d) the required angle is:

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Answer: 29°

<u>Task 2.</u>

a) the required angle is EFV (see the attached picture): arctan(EV/FE);

b) to calculate FE: FE=0.5AB=7.25 (cm.);

c) to calculate EV:

EV=\sqrt{DV^2-DE^2} =\sqrt{17.2^2-(14.5/\sqrt{2})^2}=13.80996 (cm.);

d) to calculate the required angle:

m(∠EFV)=arctan(13.80996/7.25)=arctan(1.9048)≈62.302°=62°.

Answer: 62°

8 0
3 years ago
7. There are 442 boy students in Maple Crest 7th grade class. If 15% of the
Rus_ich [418]

Answer:

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Step-by-step explanation:

If you make it into a proportion where the percent of boys is 85% then you get 85/100=442/w. When you cross multiply you get 85w=44200. Then you simplify and get w=520 so there are 520 students in total

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4 years ago
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brilliants [131]

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3 years ago
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Answer:

-9(7+3)x

Step-by-step explanation:

7+3=10×9=90 so that'll be 90x

7 0
3 years ago
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