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ICE Princess25 [194]
3 years ago
7

Please hurry up and answer i’ll mark brainliest

Mathematics
1 answer:
Sever21 [200]3 years ago
7 0

Answer: B. 130

   

Step-by-step explanation:

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Which shows the expression below simplified?
patriot [66]

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a

Step-by-step explanation:

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The ratio of girls to boys in a lunchroom is 3 to 4. There are 48 boys. How many girls are there?
BabaBlast [244]

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there are 36 girls

Step-by-step explanation:

ratio is 3 to 4

3 0
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During one month there were seven days of precipitation. What if there had only been three days and precipitation that month? Ho
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No se por que no te entendi
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QUICK QUICK QUICK QUICK I NEED ALL YOUR ANSWERS NOW UNDER 2 MINUTES ANSWER FIRST AND YOU WILL GET THE CHANCE TO BE THE BRAINLIES
juin [17]

Answer:

2 20/24

Step-by-step explanation:

divide 4/2=2

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2 20/24

7 0
3 years ago
Solve the equation. And write all solutions in general form.
Amiraneli [1.4K]

Answer:

x = pi/2 + 2 pi n                            x = pi + 2 pi n   where n is an integer

x = 5pi /3 + 2 pi n                      

Step-by-step explanation:

8 cos^2 x + 4 cos x-4 = 0

Divide by 4

2 cos^2 x +  cos x-1 = 0

Let u = cos x

2 u^2 +u -1 =0

Factor

(2u -1) ( u+1) = 0

Using the zero product property

2u-1 =0    u+1 =0

u = 1/2      u = -1

Substitute cosx for u

cos x = 1/2    cos x = -1

Take the inverse cos on each side

cos ^-1(cos x) = cos ^-1(1/2)   cos ^-1( cos x) =cos ^-1( -1)

x = pi/2 + 2 pi n                            x = pi + 2 pi n   where n is an integer

x = 5pi /3 + 2 pi n                      

8 0
3 years ago
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