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svetoff [14.1K]
3 years ago
8

Two paperback books cost a total of

Mathematics
1 answer:
KengaRu [80]3 years ago
3 0

Answer:

20 dollars

Step-by-step explanation:

I think 20+20+20=60 then 60-40=20

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“solve each triangle to the nearest tenth of a unit”
Hitman42 [59]

Answer:

Step-by-step explanation:Solve each triangle. Round side lengths to the

nearest tenth and angle measures to the nearest

degree.

1.

SOLUTION:  

Use the Law of Cosines to find the missing side

length.

Use the Law of Sines to find a missing angle

measure.

Find the measure of  .

ANSWER:  

A ≈ 36°, C ≈ 52°, b ≈ 5.1

2.

SOLUTION:  

Use the Law of Cosines to find the measure of the

largest angle,  .

Use the Law of Sines to find3. a = 5, b = 8, c = 12

SOLUTION:  

Use the Law of Cosines to find the measure of the

largest angle,  .

Use the Law of Sines to find the measure of angle,

.

Find the measure of  .

ANSWER:  

A ≈ 18°, B ≈ 29°, C ≈ 133°

4. B = 110°, a = 6, c = 3

SOLUTION:  

Use the Law of Cosines to find the missing side

length.

Use the Law of Sines to find a missing angle

measure.

Find the measure

ANSWER:  

A ≈ 48°, C ≈ 22°, b ≈ 7.6

5 0
2 years ago
In my carpenter shop I make 3 legged stools and 4 legged chairs. I looked at my days output and counted 55 legs and 16 seats. Ho
Stells [14]
x-number\ of\ stools\\y-number\ of\ chairs\\\\ \left \{ {{y+x=16} \atop {3x+4y=55}} \right. \\\\From\ first\ equation:\\\\y=16-x\\\\Substract\ to\ second\ equation:\\\\3x+4(16-x)=55\\3x+64-4x=55\\3x-4x=55-64\\-x=-9\\x=9\\\\y=16-9=7\\\\ \left \{ {{y=7} \atop {x=9}} \right.
7 0
3 years ago
PLEASE HELP PLEASE PLEASE HELP
IrinaK [193]

Evaluate h(-2)

The answer is -16

8 0
3 years ago
Bella had already read 20% of the book before her teacher assigned it to the class. She is choosing between two options to finis
Lubov Fominskaja [6]

Answer:

How big is the book?

If it has more than 96 pages remaining 25% each night is quicker if it has less that 96 or less remaining 24 pages a night is faster

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the trigonometric ratio for sin Z ?
Schach [20]

In all right triangles, the ratio between a leg and the hypothenuse is the sine of the angle opposite to the leg.

So, in your case, we have

\sin(Z) = \dfrac{XY}{XZ}

In order to find XY, we have

XY = \sqrt{XZ^2-YZ^2} = \sqrt{1600-1024}=\sqrt{576} = 24

So, the ratio for the sine is

\sin(Z) = \dfrac{XY}{XZ} = \dfrac{24}{40} = \dfrac{3}{5}

6 0
3 years ago
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