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Zielflug [23.3K]
3 years ago
7

PLEASE HELP ME ASAP!!! i need help!!!

Mathematics
2 answers:
AURORKA [14]3 years ago
8 0
Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong. Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong. Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.
erica [24]3 years ago
3 0

Answer:

fourth option

Step-by-step explanation:

Using the sine and cosine ratios in the right triangle and exact values

sin60° = \frac{\sqrt{3} }{2} , cos60° = \frac{1}{2} , then

sin60° = \frac{opposite}{hypotenuse} = \frac{x}{4\sqrt{2} } = \frac{\sqrt{3} }{2} ( cross- multiply )

2x = 4\sqrt{6} ( divide both sides by 2 )

x = 2\sqrt{6}

---------------------------------------------------------

cos60° = \frac{adjacent}{hypotenuse} = \frac{y}{4\sqrt{2} } = \frac{1}{2} ( cross- multiply )

2y = 4\sqrt{2} ( divide both sides by 2 )

y = 2\sqrt{2}

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2. What is the product of 4 2/3 and 11 1/4?
Lerok [7]
4 \frac{3}{4} ~*~ 11\frac{1}{4} =  \frac{14}{3} ~*~ \frac{45}{4} =  \frac{630}{12}=52 \frac{6}{12}  =[52 \frac{1}{2} ]
3 0
3 years ago
My family uses 3 cartons of milk a day . how many cartons did we use in january
tangare [24]

Answer:

93 cartons

Step-by-step explanation:

January-31

no of cartons-3 × 31=93

4 0
2 years ago
If the exterior angle of a regular polygon is 7.2 degrees, what is the name of that polygon?
kirill [66]

A regular polygon with exterior angle of 7.2 degrees is a 50-gon.

<h3>Regular polygon</h3>

Regular polygon are polygon that are equiangular. This simply means they are polygon with equal angles.

The formula to find the number of sides of a polygon using exterior angle is as follows:

  • exterior angle = 360 / n

where

n = number of sides

Therefore,

7.2 = 360 / n

cross multiply

7.2n = 360

divide both sides by 7.2

n = 360 / 7.2

n = 50

The polygon has 50 sides. Therefore, it is a 50-gon

learn more on polygon here: brainly.com/question/12105506

8 0
2 years ago
Mr. Gonzales is replacing a cylindrical air-conditioning duct. He estimates the radius of the duct by folding a ruler to form tw
GalinKa [24]

Answer:

  • <em><u>5.6875 in</u></em>

Explanation:

At the point of tangency, the <em>tangent </em>to a circle and the <em>radius</em> form a right triangle (the radius is perpendicular to the tangent).

Here you are given the length of the tangent (6in), and the distance from the bisected vertex to the circle (2.75 in)

I tried to upload the drawing but the tool is not allowing it now.

In the figure:

  • The length of the tangent (6 in) is one leg of the triangle
  • The distance from vertex and the circle (2.75in)  along with the radius forms the hypotenuse of the right triangle: 2.75 + r.
  • The other leg is the radius, r.

Then, you can use Pythagorean theorem:

  • (r)² + (6)² = (r +2.75)²

Solve:

  • r² + 36 =  r² + 5.5r + 7.5625
  • 5.5r = 36 - 7.5625
  • 5.5r = 28.4375
  • r = 5.6875

The solution is in inches: r = 5.6875 inches ← answer

4 0
3 years ago
What number must be added to 15,-6, and 12 to have a mean of 5? Explain.
Genrish500 [490]

You need to add a -1

We can find this by setting up the equation like so

x + (-6) + 12 + 15 / 4 = 5

x + 21 = 20

x = 20 -21

x = -1

Now if we insert -1 where x is located in the equation, you will get a means of 5

3 0
3 years ago
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