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Flura [38]
3 years ago
9

Find A and C,Laws of sines and cosines

Mathematics
1 answer:
stealth61 [152]3 years ago
6 0

Answer:

AC=15.9976

Step-by-step explanation:

Law of Sines: \frac{sin(A)}{a} =\frac{sin(B)}{b} =\frac{sin(C)}{c}

Step 1: Define

a = 8 ft

A = 30°

b = ?

B = 89°

Step 2: Substitute and Evaluate

\frac{sin(30)}{8} =\frac{sin(89)}{b}

bsin(30)=8sin(89)

b=\frac{8sin(89)}{sin(30)}

b=16cos(1)

b=15.9976

AC=15.9976

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chelsea deposits $600 into a bank account and is earning simple interest.After 4 years her account has a balance of $621.60.If C
olga nikolaevna [1]
If she deposited $600 and had $621.60 after four years, then she earned: $621.60 - $600 = $21.60 in four years. It means in one year she earned $21.60 ÷ 4 = $5.40. Now we have to find out how many percent of $600 is $5.40:

$5.40 = x% from $600
5.4 = x/100 * 600
5.4 = 600x/100                 / * 100 (both sides)
540 = 600x                       / ÷ 600 (both sides)
x = 0.9

So the interest rate was 0.9% annually.

Now we have to find out how much is 0.9% from $1100:

$1100 * 0.9% =
= 1100 * 9/1009 =
= 9900/1000 =
= 9.9

It means in one year she would earn $9.90. After 7 years she would earn $9.90 * 7 = $69.30, so she would have in her account:

$1100 + $69.30 = <u>$1169.30</u>
8 0
3 years ago
Alicia uses 7.4 pints of white paint and blue paint to paint her bedroom walls. 2 5 of this amount is white paint, and the rest
aalyn [17]

Answer:

4.9

Step-by-step explanation:

6 0
2 years ago
What is the slope of the line that passes through the points (-1, 2) and (-4, 3)?
Rus_ich [418]

Answer: -1/3

Step-by-step explanation:

Slope is the difference between the y coordinate points divided by the x coordinate points

We have (-1, 2) and (-4, 3)

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Slope = -1/3

5 0
2 years ago
HALP HALP HALP HALP HALP
MAXImum [283]

I believe it is C but i can’t be sure but I hope u get it right!
8 0
2 years ago
T is between points D and S. DT = 27 and TS = 35.
lana [24]
D                  T                          S
|-------27---------|
                     |------------35-----------|
DS=27+35=62
the answer is 62
7 0
3 years ago
Read 2 more answers
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