A right angle measures: 90 degrees

Mathematics

2 answers:

Aneli [31]3 years ago

6 0

Correct right angle is 90 degrees

Goryan [66]3 years ago

3 0

Yes a right angle does measure 90°

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How much interest is earned on $1470 at 4% for six months

Elenna [48]

Answer:

$29.4

Step-by-step explanation:

I assume the question is based on simple interest since you didn't specify

Using simple interest

Simple interest=P×R×T

Where,

P=principal=$1470

R=interest rate=4%=0.04

T=time=6 months=0.5 year

Simple interest=P×R×T

=1470×0.04×0.5

=29.4

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2 years ago

A submarine was traveling along the surface of the ocean and decides to dive. If the dive angle is 28° with the horizontal surfa

Alex_Xolod [135]

Answer:

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Step-by-step explanation:

See the attached diagram.

The submarine starts to dive at point A and diving along AB.

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Then Δ ABC is a right triangle having ∠ BAC = 28° {Given}

So, using trigonometry we can write

$\cos 28 = \frac{AC}{AB} = \frac{AC}{1.7}$

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Therefore, the surface distance that the submarine travels is 1.5 nautical miles. (Answer)

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3 years ago

If you buy six pens and one mechanical pencil, you'll get only $1 change from your $10 bill. but if you buy four pens and two me

xxTIMURxx [149]

Let p be the prize of a pen and m the prize of a mechanical pencils. If you buy six pens and one mechanical pencil, you spend 6p+m. We know that this equals 9, because you get 1$ change from a 10$ bill.

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$\begin{cases} 6p+m=9\\4p+2m=8\end{cases}$