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vladimir1956 [14]
3 years ago
11

1 Find the value of the variables. b 30° a 12 60° a- b =

Mathematics
1 answer:
Andrew [12]3 years ago
4 0

Answer:

a=6

b=10.39

Step-by-step explanation:

a=sin 30x12 or a=cos60x12

a=6

b=cos 30x12 or b=sin60x12

b=10.39

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24x + 30x = 3x + 24 + 4
Alinara [238K]

24x + 30x = 3x + 24 + 4


54x=3x+24+4


54x=3x+28


54x-3x=28


51x=28


X=28/51

7 0
3 years ago
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1. The description "Y is 4 more than the opposite of X" is represented by
Vladimir [108]
I believe it is y= -x + 4
4 0
3 years ago
Please help asap! <br> Solve for X.
charle [14.2K]

Answer:

I believe it's 12

Step-by-step explanation:

I hope this helps

8 0
3 years ago
Find the value of x and y.
zysi [14]

Answer:

<em>x = 9</em>

<em>y = 36</em>

Step-by-step explanation:

<u>Lines and Angles</u>

Triangle CDE is isosceles. This means the two angles of the base DE are congruent (have the same measure):

7x + 1 = 4x + 28

Subtracting 4x + 1:

3x = 27

Dividing by 3:

x = 9

Substituting in the expression for the angles:

7x + 1 = 7*9 + 1 = 64°

The angles are 64° and 64°. The other internal angle at vertex C is 180°-64°-64°=52°. This angle is congruent with its vertical angle in the triangle ABC. We are given another angle of 43°. Thus the measure of angle A is 180°-52°-43°=85°

This last angle is equal to the expression of y:

-2(3 - y) + 19 = 85

Subtracting 19:

-2(3 - y) = 66

Removing the parentheses:

-6 + 2y = 66

Adding 6:

2y = 72

Dividing by 2:

y = 36

Final answer:

x = 9

y = 36

8 0
3 years ago
A karate instructor earns $165 for teaching 3 classes. The instructor receives a 10% raise. How much the instructor earns, in do
Zarrin [17]

Answer:

A $60.50

Step-by-step explanation:

165 divided 3 = $55.00 per class

55.00 X 10% = 5.50 per class

55.00 + 5.50 = 60.50

8 0
3 years ago
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