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3 years ago

Pls help ASAP I’ll give brainliest

Mathematics

1 answer:

NARA [144]3 years ago

7 0

Answer:

B. 11.42

Step-by-step explanation:

<u>Use the law of cosines:</u>

$c = \sqrt{a^2+b^2-2ab*cosC}$

<u>Substitute the values:</u>

$c = \sqrt{9^2+12^2-2*9*12*cos64}=11.42$

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3 years ago

What is the answer in simplest form

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3 years ago

Read 2 more answers

Hannah earned $1536 in 8 years on an investment at a 4% annual simple interest rate. How much was Hannah’s investment? $4800 $30

Nonamiya [84]

Simple interest calculates interest on initial amount only. The investment by Hannah was : Option A: $4800

<h3>How to calculate simple interest amount if rate of interest is R% annually?</h3>

Suppose that the initial amount of investment is P

And the rate of simple interest is R% annually,

And the time of investment is T years.

Then, the amount of simple interest is calculated as:

$I = \dfrac{P \times R \times T}{100}$

For the given case, let the initial investment Hannah made was of $P

Then, the time of investment is T = 8 years, R% = 4%, and given that Hannah earned interest I = $1536

Putting values in the above formula, we get;

$I = \dfrac{P \times R \times T}{100}\\\\1536 = \dfrac{P \times 8 \times 4}{100}\\\\P = \dfrac{153600}{32} = 4800$

Thus,

The investment by Hannah was : Option A: $4800

Learn more about simple interest here:

brainly.com/question/5319581

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3 years ago

What do I have to do?

bekas [8.4K]

This is to do with ratios, the idea behind it is that you see that the side of length 24 is an enlarged version of the side labelled 16. Using this you can see that the ratio of enlargement is 1.5, therefore x = 26/1.5 = 53/2

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