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MAVERICK [17]
3 years ago
7

Question #3 math help please

Mathematics
1 answer:
LiRa [457]3 years ago
4 0

Answer:

x = 45.6°

Step-by-step explanation:

As we can see, this is a right triangle, so there are known relationships

well to start we have to know the relationship between angles, legs and the hypotenuse

α = x°

a: adjacent

o: opposite = 5

h: hypotenuse  = 7

sin α = o/h

cos α = a/h

tan α = o/a

we see that it has (angle, hypotenuse, opposite)

is the sine

sin α = o/h

sin x = 5/7

x = sin^-1 (5/7)

x = 45.58°

if we want to round to the nearest tenth

x = 45.58° = 45.6°

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The volume of a cylinder with radius r and height his v = 7h
Serjik [45]

Answer: 128.5 gallons

Step-by-step explanation:

V= πr²h

V=π15²42

V= 29688.05058in³ ÷ 231 ≈ 128.5 gallons

Note- It would mean the world to me if you could mark me brainliest!

4 0
3 years ago
What is the surface area of the figure shown ?
AVprozaik [17]
A: 184

1.) find the area of the two sides (length*height)*2
5*8=40*2=80

2.) Find the area of the adjacent sides (Width*height)*2
5*4=20*2=40

3.) Find the area of the ends (length*width)*2
4*8 =32*2=64

4.) add the three areas together
40+80+64=184



6 0
3 years ago
Suzette ran and biked for a total of 44.75 mi in 4 h. Her average running speed was 6.5 mph and
vaieri [72.5K]

Suzette ran for 1.5 hours and biked for 2.5 hours.

a. Let x = total hours Suzette ran.

Let y = total hours Suzette biked.

The equation to solve the question will be:

x + y = 4 ....... i

6.5x + 14y = 44.75 ....... ii

b. x + y = 4 ....... i

6.5x + 14y = 44.75 ....... ii

From equation i, x = 4 - y

Put x = 4-y into equation into equation ii

6.5x + 14y = 44.75

6.5(4 - y) + 14y = 44.75

26 - 6.5y + 14y = 44.75

Collect like terms

-6.5y + 14y = 44.75 - 26

7.5y = 18.75

Therefore, y = 18.75/7.5

y = 2.5

Therefore, she bikes for 2.5 hours

Since x + y = 4

x = 4 - y

x = 4 - 2.5

x = 1.5

She ran for 1.5 hours.

Read related link on:

brainly.com/question/24578032

5 0
3 years ago
Read 2 more answers
Use cos to solve for a(please no links and show work)
LekaFEV [45]
Fyi don’t ever press the links it’s so they can hack u LOL
5 0
3 years ago
2 Points
yarga [219]

Answer:

Step-by-step explanation:

4.7y

8 0
4 years ago
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