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wolverine [178]
3 years ago
13

Plz gimme the right anwser

Mathematics
2 answers:
Strike441 [17]3 years ago
7 0
B is right the correct answer
otez555 [7]3 years ago
4 0
B is the right answer. 
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If cos(2/3x+20)°=sin(2x−10)°, find the acute angles of the corresponding right triangle.
adell [148]

Answer:

A = 40°

B = 50°

Step-by-step explanation:

If cos A = sin B, then A + B = 90

So, 2x/3 + 20  + 2x - 10 = 90

      2x + 60 + 6x - 30 = 270

               8x + 30 = 270

                       8x = 240

                          x = 30

2x/3 + 20 = 60/3 + 20 = 20 + 20 = 40

2x - 10 = 2(30) - 10 = 60 - 10 = 50  or  90 - 40 = 50

       

7 0
3 years ago
Step by step explanation:<br><br> 12b - b =77
ozzi

Answer:

7

Step-by-step explanation:

12b -b = 11b

11b = 77

Divide both sides by 11

b = 7

8 0
3 years ago
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The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for
dezoksy [38]

Answer: 44 gallons

Step-by-step explanation:

Using proportion,

33 gallons = 3hours

X = 4hours

Cross multiply

3 × X = 33 × 4

3X = 132

Divide bothside by 3

3x/3 =132/3

X = 44

Therefore the helicopter uses 44gallons for 4 hours.

3 0
3 years ago
If you were to deposit $1,000 into an account that paid 10 percent interest compounded semiannually, how much money would you ha
dexar [7]
Semiannual means there will be two total periods in a year. Divide ten percent by two to get the interest rate per period. Then multiple by 1+i twice

6 0
2 years ago
Evaluate log12y2, given log12y = 16.
serg [7]

Answer:

Its a i just took the test

Step-by-step explanation:

7 0
3 years ago
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