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Paladinen [302]
3 years ago
12

Helppppppppppppppppppppppppppppp

Mathematics
1 answer:
Vaselesa [24]3 years ago
5 0
The answer is B. Use the trig identity (sin x)^2+(cos x)^2=1. Since cos x=0.3090, sinx=+-\sqrt(1^2-0.3090^2)=+-0.9511. Since 0<x<90, sin x must be positive, so sin x=0.9511. tan x=sin x/cos x=0.9511/0.3090=3.0780.
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The amount Q of water emptied by a pipe varies directly as the square of the diameter d. A pipe 5 inches in diameter will empty
Wittaler [7]

Answer:

Q= 8

The amount emptied is 8 gallons of water

Step-by-step explanation:

First we need to create the equation for the above statement.

Q is directly proportional to the square of d

Q= kd²

Q= 50

d= 5

50= k5²

50 = k25

K = 50/25

K = 2

K is the constant of proportionality.

Now our equation is

Q= 2d²

Where Q = volume in gallons

d = pipe diameters in inch

For a pipe of diameter 2 inch

The amount of gallons of water emptied assuming the same kinf of flow is

Q= 2d²

Q= 2(2)²

Q= 2(4)

Q= 8

The amount emptied is 8 gallons of water

5 0
3 years ago
Is 9749a whole number?<br>Is 9.5, a whole number?
ipn [44]
1. Yes
2. No
A whole number is a number with no fractions or decimals
3 0
3 years ago
Read 2 more answers
Please answer the question below, answers would be appreciated. And brainliest will be given out.
Andre45 [30]
4:12
Ana:
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8 0
3 years ago
What is the degree of x^4-3x+2
Vanyuwa [196]

Answer:

Step-by-step explanation:

The degree is 4 because it is the largest exponent.

3 0
3 years ago
HIN
Elis [28]

should just be 1/2

Sorry if im wrong

5 0
2 years ago
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