4 years ago

Solve the system of equations:

Mathematics

1 answer:

lesya692 [45]4 years ago

7 0

X = -2

Hope that’s helps a bit.

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3tan x * cos x * cot x =

ruslelena [56]

Answer:

3cos(x)

Step-by-step explanation:

use cot(t) = 1/tan(t), transform the expression:

3tan(x)cos(x)x1/tan(x)

reduce the expression with tan(x):

3cos(x)

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3 years ago

WHAT IS S=2PIR^2+2PIRH SOLVE FOR H

grigory [225]

$\\~\qquad\quad S\ =\ 2PIR^2+2PIRH\\\underline{-2PIR^2\qquad-2PIR^2\qquad\quad\ }\\\\ S-2PIR^2=2PIRH\\\\ 2PIRH\ =\ S-2PIR^2\\\underline{ :(2PIR)\qquad :(2PIR)}\\\\\\ H=\dfrac{S-2PIR^2}{2PIR}\\\\\\ H=\dfrac{S}{2PIR}-\dfrac{2PIR^2}{2PIR}\\\\\\ H=\dfrac{S}{2PIR}-R$

or:

$\\~\qquad\quad S\ =\ 2PIR^2+2PIRH\\\\~\qquad\quad S\ =\ 2PIR(R+H)\\\underline{:(2PIR)\qquad :(2PIR)}\\\\\\~\ \ \dfrac{S}{2PIR}\ =\ R+H\\\\\\ \dfrac{S}{2PIR}-R=H\\\\\\ H=\dfrac{S}{2PIR}-R$

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4 years ago

Use the picture below to answer questions 13a and 13b.

Svet_ta [14]

Answer:

13a: Measure of angle 1 is 120 degrees

13b: Angle 2 is 60 degrees

Step-by-step explanation:

Angle 1 is alternate exterior (so in a parallel pair they are equal) to the angle on line m given as 120 deg.

Angle 2 is 180 minus 120= 60 Sum of the two angles must equal 180.

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3 years ago

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zhenek [66]

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Step-by-step explanation:

Just substitute the known values into the equation:

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2 years ago

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Lady bird [3.3K]

Answer:

Step-by-step explanation:

(x-5)2+8 = 92

2x-10+8 = 92

2x = 94

x = 47

7 0

3 years ago

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