3 years ago

I NEED HELP I WILL MARK YOU BRAINLIST

Mathematics

1 answer:

natta225 [31]3 years ago

6 0

Answer:

B. -2 1/2 +3 1/4 = 3/4

Step-by-step explanation:

the starting point is -2 1/2, they added 3 1/4, and the ending point is 3/4.

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Simplify the radical expression.<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B40%7D%20" id="TexFormula1" title=" \sqrt{40}

Elden [556K]

Answer:

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3 years ago

Is 0.42 a rational number? Explain how you know.

kvasek [131]

Answer:

Yes, any number that can be written as a fraction is a rational number.

Step-by-step explanation:

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3 years ago

94,172 what is 1000 less in word form

Mashutka [201]

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3 years ago

An aerial photograph from a U-2 spy plane is taken of a building suspected of housing nuclear warheads. When the photograph is t

NISA [10]

Answer:

Building is 56.58 feet long.

Step-by-step explanation:

Consider the provided information.

An aerial photograph from a U-2 spy plane is taken of a building suspected of housing nuclear warheads.

When the photograph is taken, the angle of elevation of the sun is 30°.

By comparing the shadow cast by the building in question to the shadows of other objects of known size in the photograph, scientists determine that the shadow of the building in question is 98 feet long.

As we know: $\tan\theta=\frac{opp}{adj}$

The value of tan 30 degrees is $\frac{1}{\sqrt{3} }$

$\tan30=\frac{h}{98}$

$\frac{1}{\sqrt{3}}=\frac{h}{98}$

$h=\frac{98}{\sqrt{3}}$

$h=56.58$

Hence, Building is 56.58 feet long.

8 0

4 years ago

Help meeeeeeeeeeeeee

blagie [28]

Answer:

perimeter= 2(l+b)

=2(36+23)

=118m

area =l×b

=36×23

=828m²

8 0

3 years ago