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3 years ago

Dres is taxed at a 17% tax rate for his federal taxes. Last year, he

Mathematics

1 answer:

VladimirAG [237]3 years ago

5 0

Answer:

1,768

Step-by-step explanation:

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Prove that 1/sin^2A -1/tan^2A= 1

Vika [28.1K]

Answer:

Step-by-step explanation:

$LHS =\dfrac{1}{Sin^{2} \ A }-\dfrac{1}{Tan^{2} \ A }\\\\\\ = \dfrac{1}{sin^{2} \ A}- \dfrac{1}{\dfrac{Sin^{2} \ A}{Cos^{2} \ A}}\\\\\\= \dfrac{1}{sin^{2} \ A } - \dfrac{Cos^{2} \ A}{Sin^{2} \ A}\\\\\\= \dfrac{1-Cos^{2} \ A}{Sin^{2} \ A}\\\\\\= \dfrac{Sin^{2} \ A}{Sin^{2} \ A}\\\\\\= 1 = \ RHS$

Hint: 1 - Cos² A = Sin² A

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3 years ago

Solve 7x-2y=11 for y

Leni [432]

Answer:

y = 7/2x -11/2

Step-by-step explanation:

7x-2y=11

Subtract 7x from each side

7x-2y -7x = -7x+11

-2y = -7x+11

Divide each side by -2

-2y/-2 = -7x/-2 +11/-2

y = 7/2x -11/2

8 0

3 years ago

Read 2 more answers

Student A starts with $100 in the bank and makes $5 a day. Student B starts with $50 and makes $7 a day. Assuming the students s

nasty-shy [4]

Student A starts with $100 in the bank and makes $5 a day. Student B starts with $50 and makes $7 a day. Assuming the students save their money, when will they have the same amount of money ?

3 0

3 years ago

Read 2 more answers

Solve the compound inequality. 7x>-35 and -5x>-50

mafiozo [28]

Answer:

x > - 5

x < 10

Step-by-step explanation:

Divide 7x>-35 by 7

Divide - 5x>-50 by - 5

Since we divide by a negative whe change the inequality sign.

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3 years ago

A sandbox is being built in a park. The diagram shows the four vertices of the sandbox. Each unit in the

____ [38]

Answer:

the answer is 90 square feet.

Step-by-step explanation:

the length is 10, and the height is 9.

10×9=90

5 0

3 years ago