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3 years ago

HELP DUE IN 30 MINS!

Mathematics

2 answers:

zepelin [54]3 years ago

8 0

Answer:

Use sine for this

sin 72° = 15/x
x = 15 / sin 72 °
x = 15.8 (rounded)

tia_tia [17]3 years ago

6 0

Answer:

relationship between perpendicular and hypotenuse is given by sin angle

sin72=p/h

sin72=15/x

x=15/sin 72=15.77=16

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Hello Kids! Its Joe giving out a free brainliest to whoever answers this first with the abc's backwards!

sveticcg [70]

Answer:

Z, Y, X,

W, V,

U, T, S, R, Q, P, O, N,

M, L, K,

J, I, H,

G, F, E, D,

C, B, and A;

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

A man is standing at a radar base and observes an unidentified plane at an altitude 6000m flying towards the radar base at an an

liubo4ka [24]

Answer:

The speed in of the plane is 115.47 m/sec

Step-by-step explanation:

Given:

Height at which the plane is flying = 6000 m

Angle of elevation at the radar base = 30 Degrees

Angle of elevation at the radar base after one minute = 60 Degrees

To Find:

The Speed of the plane in meter per second = ?

Solution:

Let us use the tangent of the angle to find the distance (d) to a point directly below plane:

when the angle is 30 degrees

$tan(30) = \frac{6000}{d1}$

$d1 = \frac{6000}{tan(30)}$

$d1 = \frac{6000}{0.577}$

d1 = 10392.3 meters

when the angle is 60 degrees

$tan(60) = \frac{6000}{d2}$

$d2 = \frac{6000}{tan(60)}$

$d2 = \frac{6000}{1.732}\\$

d2 = 3464.1 meters

distance travelled by aircraft in 1 min is

=>d1 - d2

=>0392.3 - 3464.1

= 6928.2 m/min

Now converting to m/sec

=> $\frac{6928.2}{60}$

=>115.47 m/sec

4 0

3 years ago

What are all the fractions are equivalent to 4/12

GarryVolchara [31]

The answers are 1/3, 2/6, 3/9, 4/12

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3 years ago

I need help with fractions :(

bearhunter [10]

Answer:

x = 0, Need the steps?

STEPS:

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9x = 0 (Add 7 to both sides)

x = 0 (Divide both sides by 9)

8 0

3 years ago

Read 2 more answers

Nimisha wants to draw a wheel like the one shown. Each shaded part of the wheel should be one-third of each unshaded part. What

ivolga24 [154]

Answer:

Each shade has a 22.5 degree angle from the middle

Each unshaded has a 67.5 degree angle from the middle.

Step-by-step explanation:

You can solve this by making each unshaded part equal to x and each shaded part equal 1/3x it is a circle so it has to equal 360 so you end up with:

x + 1/3x + x + 1/3x + x + 1/3x + x + 1/3x = 360

Combine Like terms:

16/3x = 360

Multiply both sides by the opposite:

(3/16) (16/3x) = (360) (3/16)

x=135/2 or x=67.5

Then you can plug 67.5 in for x:

1/3x ---> 1/3(67.5) = 22.5

3 0

4 years ago