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3 years ago

15

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1 answer:

lubasha [3.4K]3 years ago

8 0

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Help please this is expressions and equations!!

Yanka [14]

Answer:

B

Step-by-step explanation:

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3 years ago

What percent of 200 is 290

Crazy boy [7]

145%
200/200: 100%
90/200= 45%

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3 years ago

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Find the values of the six trigonometric functions of an angle in standard position if the point with coordinates (13, 84) lies

erma4kov [3.2K]

Answer:

If P = (x,y) then formulas for each trigonometric functions are:

sin x = y/r

cos x = x/r

tan x = y/x

cot x = x/y

sec x = r/x

cosec x = r/y

where r = √(x²+y²).

First find r:

r = √(13²+84²)=√(169+7056)=√7225=85.

Then just substitute:

sin x = 84/85

cos x = 13/85

tan x = 84/13

cot x = 13/84

sec x = 85/13

cosec x = 85/84

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3 years ago

72% of what number is 27?

Tems11 [23]

72 is 266.666666667% of 27

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3 years ago

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MATH HELP!!!!!<br><br> If y = 15 when x = 2, what is the value of x when y = 7?

Ede4ka [16]

<u>Direct Variation:</u> $\frac{y}{x} = k$

$\frac{15}{2} = k$

when y = 7: $\frac{7}{x} = \frac{15}{2}$

14 = 15x

$\frac{14}{15} = x$

<u>Inverse variation:</u> y*x = k

15 * 2 = k

30 = k

when y = 7: 7 * x = 30

$x = \frac{30}{7}$

3 0

3 years ago