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3 years ago

NEED HELP ASAP ON MATH PLZ HELP

Mathematics

1 answer:

zaharov [31]3 years ago

5 0

Answer:

14π cm

Step-by-step explanation:

arc length = rΘ

arc length= 63(2π/9)

arc length= 14π cm

Hope this helps!

Please mark brainliest if you think I helped! Would really appreciate!

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Express sin 404 in terms of the sine of a positive acute angle.

34kurt

Sin404 = sin(360 + 44)
as sin(360 + α) = sinα
= sin44

4 0

4 years ago

Help!! It's question 14

Leona [35]

Answer:

200/120 = 5/3

5/3 x 3 = 5 oz

3/120 = x/200

x = 600/120 = 5

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3 years ago

from the top of a tree the angle of depression of a rock on the ground is 49 degrees. If the tree is 18.5 m tall, how far is the

Rashid [163]

Answer:

Step-by-step explanation:

If you were to sit in the very top of said tree and look directly straight, your line of vision would be parallel to the ground. The angle of depression is in between your line of vision and the rock. When you look down at the rock, your line of vision to the rock is a transversal between the 2 parallel lines. With this being the case, the angle of depression is alternate interior with the angle made on the ground from the rock to the top of the tree. See the illustration I attached below.

We are looking for the distance on the ground between the tree and the rock, which we will call x. The side opposite the reference angle is the height of the tree and the side adjacent to the reference angle is x. Side opposite over side adjacent is the tangent ratio. Therefore,

$tan(49)=\frac{18.5}{x}$ and

$x=\frac{18.5}{tan(49)}$ and on your calculator in degree mode, you will find that

x = 16.08 m

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4 0

3 years ago

-x/6 + 6 = 32<br> What is the answer and how do I solve it

masha68 [24]

Answer:

x= -120

Step-by-step explanation:

-x/6+6+6=32

Use -a/b=a/-b= -a/-b to rewrite the fraction.
-x/-6+6+6=32
Add the two 6's then you get 12
-x/-6+12=32
Multiply both sides with the equation by 6
-x+72=192
Move the constant to the right-hand side and change its side
-x=192+72
Subtract the numbers, -x=192-72
-x=120
Change the signs on both sides of the equation
You have your answer it is x= -120

8 0

3 years ago

In which step did Rob make a mistake?

Karolina [17]

Answer:

Explanation:

Using the PEMDAS rule:
P = parentheses
E = exponent
M = multiplication
D = division
A = Addition
S = subtraction

Step 1: 6 + 4 x 3 - 10/5

Step 2: 6 + 12 - 2

Step 3: 18 - 2

Step 4: 16

6 0

3 years ago