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LekaFEV [45]
3 years ago
6

Find all solutions to the equation. cos^2 x + 2 cos x + 1 = 0

Mathematics
1 answer:
Helen [10]3 years ago
7 0

Answer:

x = \pi  +2\pi n

Step-by-step explanation:

Radian:  \pi  + 2 \pi n

Degree: x = 180 degree, 360 degree

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The total cost for 25 camp counselors
max2010maxim [7]

Answer:

$187.50 for shirts + The price for the hats.

Step-by-step explanation:

7.50 x 25 =the price for the shirts and 5 x K= the price for hats

K= how many camp counselors need hats.

in all add 187.50 and the price for the hats.

4 0
3 years ago
in an isosceles triangle two sides are equal. the third side is 2 less than twice the length of the sum of the two sides. the pe
egoroff_w [7]

Answer:

s for length of either equal side

b for the unequal side

b=-2+2*(s+s) and 2s+b=40

b=2*2s-2

b=4s-2

2s+4s-2=40

6s-2=40

6s=42

s=7

b=4*7-2

b=28-2

b=26

4 0
3 years ago
If i have a 86% in history what will my grade be if i got an 95% on the final
Gnoma [55]
Your grade will most likely be an A
4 0
3 years ago
you find a shirt You want to buy and the original price is $26.95 if the shirt is marked as 20% off find the discount and the sa
Scrat [10]
100% - 20% = 80%

$26.95 * 80% = $21.56

You multiply by 80% because you are taking 20% off and now want to know what 80% of the price will be.
5 0
3 years ago
Read 2 more answers
Twice the sum of a number and 3 is equal to three times the difference of the number and 3
lana66690 [7]
<span>Twice the sum of a number and 3 = 2(n + 3)
</span><span>three times the difference of the number and 3 = 3(n - 3)
so
</span><span>Twice the sum of a number and 3 is equal to three times the difference of the number and 3:
</span>2(n + 3) = 3(n - 3)
2n + 6 = 3n - 9
n = 15

answer
2(n + 3) = 3(n - 3)
n = 15
7 0
3 years ago
Read 2 more answers
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