3 years ago

4+(-3)+5+(-2)= Please show work

1 answer:

4 0

So, adding a negative number is the same as subtracting.

4-3+5-2

Then if you want, you can use the associative property.
(4-3)+(5-2)
1+3

4

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The submarine dove 150 feet from periscope height to an elevation of 200 feet below sea level.

liubo4ka [24]

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3 years ago

Math answer plz need help with this plz answer

Neporo4naja [7]

Answer:

176.625 sq.ft, 4.8 sq.ft

Step-by-step explanation:

Area of circle=πr^2 or πd^2/4
11. Given,
d=15 ft
Now,
Area=πd^2/4
3.14*15^2/4
176.625 ft^2
Therefore, the area approximation is 176.6 sq.ft
12.
Given,
d=3.5 ft
Now,
Area= πd^2/8
3.14*3.5^2/8
4.8 sq.ft
I got the answer by dividing the area of circle by 2 as semicircle is half of circle.