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3 years ago

What is the degree measure of angle bac? Round to the nearest whole degree

Mathematics

2 answers:

podryga [215]3 years ago

4 0

The answer would be 70 degrees.

In order to find this answer, we must first look at the cos value of an angle. The unknown angle here gives us an adjacent side of 3.4 and a hypotenuse of 10. Thus, we can use the following with cos.

Cos(A) = 3.4/10 or Cos(A) = .34

As a result, we can then use the arccos function to find the answer.

acrcos(.34) = A

70.12 = A

Then when we round, we'd get 70.

V125BC [204]3 years ago

4 0

Answer: 70° is the correct answer

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wind resistance varies jointly as an objects surface area and velocity. if an object traveling at 55 miles per hour with a surfa

nikdorinn [45]

Answer:

25 miles per hour

Step-by-step explanation:

Given

$W = Wind\ resistance$

$A = Surface\ Area$

$V = Velocity$

The joint variation can be represented as:

$W\ \alpha\ A*V$

Where:

$V = 55; A = 20; W = 220$

Required

Find V, when: $A = 55; W = 275$

We have:

$W\ \alpha\ A*V$

Express as an equation

$W= k *A*V$

Where k is the constant of variation

Make k the subject

$k = \frac{W}{A*V}$

When: $V = 55; A = 20; W = 220$

We have:

$k = \frac{220}{20 *55 }$

$k = \frac{220}{1100}$

$k = 0.2$

When: $A = 55; W = 275$

We have:

$k = \frac{W}{A*V}$

Substitute: $A = 55; W = 275$ and $k = 0.2$

$0.2 = \frac{275}{55 * V}$

Make V the subject

$V= \frac{275}{55 * 0.2}$

$V= \frac{275}{11}$

$V= 25$

3 0

3 years ago

What is the surface area in square meters of a cylinder with a radius of 3.4 meters and a height of 2.8 meters. Please show work

ohaa [14]

132.45 m^2..........

5 0

3 years ago

Which of the following correctly shows the length of each radius, the point where the circles intersect, and the equation of the

ollegr [7]

actually box 3 is correct.

because their radiuses are easy to find

but the tangent line is x=-4 or x=4

6 0

4 years ago

Need help asap! Tyy

Oksi-84 [34.3K]

Answer:

27 feet squared

Step-by-step explanation:

the formula for the area of a triangle is b(h)/2 so u just plug in the numbers into the formula from the question. we know that the base is 6ft long and the height is 9ft long.

A = b(h)/2

A = 6(9)/2

A = 27

therefore the area of the sail is 27 feet squared.

7 0

3 years ago

Read 2 more answers

Find the value of x and y (2x+7) (12y+1) (3x-7)

Shkiper50 [21]

Here is the diagram A,B,C,D are the answers so the guy who said x=6 is wrong

5 0

3 years ago