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marishachu [46]
3 years ago
12

31)

Mathematics
2 answers:
kifflom [539]3 years ago
5 0
It is 70 I believe you could check with an online calculator
lilavasa [31]3 years ago
5 0

Answer:

IT IS NOT 70!!!

Step-by-step explanation:

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3x + 14
Vikentia [17]

Answer:

id choose the answer 3(x+1)-(!-x) and 2x + 3

Step-by-step explanation:

4 0
2 years ago
Sin\theta +cos\theta =1
Mamont248 [21]

Answer:

θ = 2 π n_1 + π/2 for n_1 element Z  or θ = 2 π n_2 for n_2 element Z

Step-by-step explanation:

Solve for θ:

cos(θ) + sin(θ) = 1

cos(θ) + sin(θ) = sqrt(2) (cos(θ)/sqrt(2) + sin(θ)/sqrt(2)) = sqrt(2) (sin(π/4) cos(θ) + cos(π/4) sin(θ)) = sqrt(2) sin(θ + π/4):

sqrt(2) sin(θ + π/4) = 1

Divide both sides by sqrt(2):

sin(θ + π/4) = 1/sqrt(2)

Take the inverse sine of both sides:

θ + π/4 = 2 π n_1 + (3 π)/4 for n_1 element Z

or θ + π/4 = 2 π n_2 + π/4 for n_2 element Z

Subtract π/4 from both sides:

θ = 2 π n_1 + π/2 for n_1 element Z

or θ + π/4 = 2 π n_2 + π/4 for n_2 element Z

Subtract π/4 from both sides:

Answer: θ = 2 π n_1 + π/2 for n_1 element Z

or θ = 2 π n_2 for n_2 element Z

4 0
3 years ago
the walls of a square room need painting.Each of the four walls is 12 ft wide by 8.5 feet tall.One gallon of paint covers 75 ft.
Jobisdone [24]
First find the area of each wall. This is length*width which would be 12*8.5=102. There are four walls in the room because it’s a square so that would be 102*4=408. So the total area you need to paint is 408ft one gallon will cover 75ft so 408/75=5.44 gallons of paint.
6 0
3 years ago
Read 2 more answers
Evaluate the expression x2 • x1 for x = 9
miskamm [114]

Answer:

162

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST IF YOU ARE CORRECT!
mixas84 [53]
The laundry one is C
The ladder one is B.
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3 years ago
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