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solmaris [256]
3 years ago
13

Need help with finding A and B

Mathematics
1 answer:
Maslowich3 years ago
3 0

Hello!

First of all, let's find A. This is the opposite and hypotenuse we will be dealing with. Therefore, we will use the sin.

sin30= 0.5

This gives us the equation below.

a/12=0.5

a=6

Now we find b. This is the adjacent and hypotenuse. Therefore, we will use the cosine.

cos30≈0.87

This gives us the equation below.

b/12=0.87

b=10.44

I hope this helps!

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Find the equation of the line that contains the point (4,-2) and is perpendicular to the line y=-2x+8.
snow_tiger [21]

Answer:

\frac{1}{2} x - 4

Step-by-step explanation:

Perpendicular lines will have slopes that are the multiplicative additive inverse of each other: a line with slope 3/4 is perpendicular to a line with slope -4/3, for example.  You need a line that is perpendicular to a line with slope -2 (reading that from the -2 in the -2x portion of the given equation, which is written in slope-intercept form), so your new line must have slope +1/2.

With the slope and a point, we can come up with an equation using this formula:

y - y-coordinate = slope (x - x-coordinate)

So we have y - (-2) = 1/2 (x - 4).

Simplify the equation:  y + 2 = 1/2 x - 2

Subtract 2 from both sides: y + 2 - 2 = 1/2 x - 2 - 2

Simplify: y = 1/2 x - 4.

4 0
2 years ago
A two-factor research study has 2 levels of factor A and 3 levels of factor B with a separate sample of n = 5 subjects in each t
amid [387]

Answer:

option (b) df = 1, 24

Step-by-step explanation:

Data provided in the question:

levels of factor A, a = 2

levels of factor B, b = 3

Subjects in each Sample, s = 5

n = 5 × 3 × 2 = 30

Now

df for Factor A = a - 1

= 2 - 1

= 1

df for Factor B = b - 1

= 3 - 1

= 2

df for Interaction AB = ( a - 1 ) × ( b - 1 )

= 1  × 2

= 2

df for Total = n - 1

= 30 - 1

= 29

df for error = 29 - 5

= 24

Hence,

df values for the F-ratio evaluating the main effect of factor A is 1, 24

The correct answer is option (b) df = 1, 24

6 0
4 years ago
Angles that share a vertex, but not a side are called
djyliett [7]
Adjacent angles-
  2 angles that share a common vertex, a common side and no common interior points.

The answer is ADJACENT ANGLE

7 0
4 years ago
Help with this question !
dem82 [27]
Liz runs the fastest
8 0
3 years ago
Read 2 more answers
Guys it is easy please write an explanation.<br> I will give brainliest answer to the best answer.
Gemiola [76]

Answer:

A.) 193

B.)191

C.)236

D.)128

Step-by-step explanation:

A)   12^2+(8-4)^3-15

       144+(64)-15

     208-15=193

B) (3*2)^3-5^2

    6^3=216-5^2

           216-25=191

I only showed work for A and B

Hope this helps !!

Mark brainlest please :)

       

7 0
3 years ago
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