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VMariaS [17]
3 years ago
5

Cos 2x + 2 sin^2 x = _______

Mathematics
1 answer:
Tems11 [23]3 years ago
3 0

1

Step-by-step explanation:

cos 2x + 2 sin²x

= (1 - 2 sin²x) + 2 sin²x

= 1 - 2 sin²x + 2 sin²x

= 1

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What is the Compound interest on a 10,000 investment the earns 6% compound monthlyfor5 years
Vlad1618 [11]

Answer:

The total compound interest is $3,488.50, I hope I helped explain how to find total compound interest

Step-by-step explanation:

So the formula for this would be:

A = P(1+r/n)^nt

A = the amount of your principal plus interest, which is the total

P = stands for the principal, which is your original amount invested

r = shows the interest rate in decimal form

n =  stands for the number of compounding periods

So to solve for the compound interest we would plug in our numbers in replacement for the letters

8 0
2 years ago
The price of a watch was increased by 20% to £198.<br> What was the price before the increase?
Semenov [28]

Answer:

165

Step-by-step explanation:

198/1.2 = 165

5 0
2 years ago
-7 2/3 + (-5 1/2) + 8 3/4
Dennis_Churaev [7]

Answer:

-4.41666666667

Step-by-step explanation:

7 0
3 years ago
Find the 7th term of the geometric sequence with the given terms.
ohaa [14]

Answer:

1. 1458

2. 500 or -500

Step-by-step explanation:

1. a4=54, a5=162

r = 162/54 = 3

a7 = a5 × r²

= 162 × 3² = 1458

2.a4=-4, a6=-100

r² = -100/-4 = 25

r = +/- 5

a7 = a6 × r

= -100 × +/- 5

= +/- 500

3 0
3 years ago
The difference of four times a number and six is two. Find the number
dolphi86 [110]

Step-by-step explanation:

4(x-6)=2

4x-24=2

4x=2+24

4x=28

x=7

8 0
3 years ago
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