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4 years ago

What’s the answer, I believe it’s 4, and D

Mathematics

1 answer:

Lapatulllka [165]4 years ago

8 0

Okay so yes for the first one it is 4 Sig digs

And I believe you are correct on the 2nd one.. I beleive it is also D.

Go with your gut! And good luck! :D

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Given Given 15 cot A = 8, find sin A and sec A.

Leviafan [203]

Answer:

$sin A = \frac{15}{17}, \ sec A = \frac{17}8$

Step-by-step explanation:

$15cot A = 8\\\\cotA = \frac{8}{15}\\\\1 + cot^2A = cosec^2 A\\\\1 + (\frac{8}{15})^2 = cosec^2 A\\\\1 + \frac{64}{225} = cosec^2A\\\\\frac{225+64}{225} = cosec^2 A\\\\cosec^2 A = \frac{289}{225}\\\\cosec A = \frac{17}{15}\\\\That \ is, \ \frac{1}{sin A} = \frac{17}{15}\\\\sin A = \frac{15}{17}$

$cot A = \frac{8}{15}\\\\\frac{cos A}{sinA} = \frac{8}{15}\\\\cos A = \frac{8}{15} \times sin A = \frac{8}{15} \times \frac{15}{17} = \frac{8}{17}\\\\\frac{1}{cosA} = \frac{17}{8}\\\\sec A = \frac{17}{8}$

8 0

3 years ago

Sadie brought $28.00 to the art supply store. She bought a brush, a sketchbook, and a paint set. The brush was 1/3 as much as th

Digiron [165]

Answer:

cost of paint set = $ 13.64

cost of sketch book = $ 6.82

cost of brush = $ 4.55

Step-by-step explanation:

Let the cost of paint set is s.

cost of sketch book = s/2

cost of brush = s/3

Money spent = $ 28 - $ 3 = $ 25

So,

s + s/2 + s/3 = 25

6 s + 3 s + 2 s = 150

11 s = 150

s = $ 13.64

cost of paint set = $ 13.64

cost of sketch book = $ 6.82

cost of brush = $ 4.55

3 0

3 years ago

If you answer this correctly I'll mark you brainlist. There is no right or wrong answer its for a school project comparing the t

fgiga [73]

Answer:

Starbucks

Step-by-step explanation:

6 0

4 years ago

The revenue, in dollars, of a company that produces video game systems can be modeled by the expression 5x2 + 2x – 80. The cost,

WINSTONCH [101]

SALES: 5x² + 2x – 80
- COST: 5x² – x + 100
= ------------------
PROFIT: 0x²+3x-180
(+3x because we subtracted a negative (-x), which is called adding, similarly taking away 100 from negative 80 is -180.)

Checking:
5x² + 2x – 80
5(500)²+2(500)-80 = 1,250,920

5x² – x + 100
5(500)² – (500) + 100= 1,249,600

Profit = 1,250,920 - 1,249,600 = 1,320

0(500)²+3(500)-180 = 1,320 YAY! {:-)

Double Checking:

5x² + 2x – 80
5(5000)²+2(5000)-80 = 125,009,920

5x² – x + 100
5(5000)² – (5000) + 100= 124,995,100

Profit = 125,009,920 - 124,995,100 = 14,820

0(5000)²+3(5000)-180 = 14,820 YAY! {:-)

3 0

4 years ago

Read 2 more answers

Select three numbers that are between -0.55 and -0.54.

pochemuha

-0.548, -0.5469, and -0.542

6 0

3 years ago