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3 years ago

Evaluate this expression

Mathematics

1 answer:

Yuki888 [10]3 years ago

8 0

Answer:

B. -20.005

Step-by-step explanation:

( -86.005 ) + 66

= -20.005

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F(2) if f(x) = (x + 1)2.

Flauer [41]

Answer:

Step-by-step explanation:

f(2) = (2 + 1)2

(3)2

5 0

3 years ago

Read 2 more answers

Help I am very bad at math I need answers by tomorrow if you can help please do

d1i1m1o1n [39]

Answer:

Step-by-step explanation:

(a - b)(a +b) = a² - b²

1 - Sin² A = Cos² A

$LHS = \frac{1}{1- Sin A} + \frac{1}{1 + Sin A}\\\\= \frac{1*(1 + Sin A)}{(1- Sin A)(1 + Sin A)} + \frac{1*(1- Sin A)}{(1 + Sin A)(1- Sin A)}\\\\= \frac{1 + Sin A+ 1 - Sin A}{1^{2}- Sin^{2} A}\\\\= \frac{2}{1 - Sin^{2} A}\\\\= \frac{2}{Cos^{2} A}\\\\= 2 Sec^{2} A$

2) Sec² A - Tan² A = 1

$LHS = \frac{1}{Sec A - Tan A}\\\\=\frac{1*(Sec A + Tan A)}{(Sec A - Tan A)(Sec A + Tan A)}\\\\=\frac{Sec A + Tan A}{Sec^{2} A - Tan^{2} A}\\\\=\frac{Sec A + Tan A }{1}\\\\= Sec A + Tan A = RHS\\\\\\$

3) LHS = Cosec² A + Cot² A

= Cosec² A + Cosec² A - 1

= 2Cosec² A - 1 = RHS

$4) LHS = \frac{Sec A}{Cos A}- \frac{Tan A}{Cot A}\\\\ = Sec A*\frac{1}{Cos A}-Tan A*\frac{1}{Cot A}\\\\ = Sec A * Sec A - Tan A * Tan A\\\\= Sec^{2} A - Tan^{2} A \\\\= 1$

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3 years ago

Prime factorization of 9

uranmaximum [27]

Answer:

3*3

Step-by-step explanation:

9 is made up of 2 factors other than itself and 1

9: 3 * 3

1 is not consider a prime and 9 is a composite. So the answer is 3 * 3.

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3 years ago

PLEASE HELP <br> the answer is not <br> 1/4^-2

hram777 [196]

Answer:

4^3÷4^5

4^(3-5)

4^-2

1/4^2

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3 years ago

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A rectangular field is divided into 2 squares of the same size and shape. If it takes 371 yards of fencing to enclose the field

nekit [7.7K]

You would divide the total fencing by 7, because there are 3 sides for each square, so that would be 6, and the one side they share would make the total 7.

371/7=53 yards for each side of the squares. The dimensions of the two parcels together would be 53 by 106.

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3 years ago