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irakobra [83]
3 years ago
11

A perfect is to be chosen from a class of 12 girls and 8 boys. What is the probability that the prefect is a girl?​

Mathematics
2 answers:
maxonik [38]3 years ago
8 0

Answer: 12/20

Step-by-step explanation:

sineoko [7]3 years ago
8 0
Hopes this helps:

Answer: 8/15

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Which of these sets of angle measures could be three angles in a triangle
erastovalidia [21]
It’s going to be B. 50+60+70=180 which is how many degrees are in a triangle.
8 0
3 years ago
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A frying pan has a radius of 14 centimeters. What is the circumference of the frying pan? Use 22 over 7 for 3.14
katen-ka-za [31]
To find the circumference calculate pi x the diameter of the circle.
Since the radius is 14, the diameter is 28. 3.14 x 28 = about 87.96
3 0
4 years ago
I need help, I don't know how to do it.
Sindrei [870]

Answer:

Step-by-step explanation:

to solve this problem we can use the Pythagorean theorem

UT and TL are the legs, while LU is the hypotenuse

We have to find LU so we can proceed like this

x^2 + (x+1)^2 = LU^2

x^2 + x^2 + 1 + 2x = LU^2

2x^2 + 2x + 1 = LU^2

LU = +/- \sqrt{2x^2+2x+1

we have to take only the positive value because a length can’t be negative.

2x^2 + 2x + 1 is positive for every value of x, so the final answer is

\sqrt{2x^2+2x+1}

5 0
3 years ago
4 cot theta<br>=<br>tan theta<br>how do I I find the value of quadrant?​
Ray Of Light [21]

Answer:

4cotα=tanα

4(1/tanα)=tanα

(4/tanα)=tanα

cross multiply

=> 4=tan²α

√4=√tan²α

±2=tanα

α=arc( tan) |2|

α=63.4° ( in first quadrant)

and

α=180+63.4=243.4 in the third quadrant

since we also found a negative answer( i.e –2) then α also lies in quadrants where it gives a negative value(i.e second and fourth quadrants)

α=180–63.4=116.6° in the second quadrant

α=360–63.4=296.6 in the fourth quadrant

therefore theta( in my case, alpha) lies in all four quadrants and is equal to:

α=63.4°,243.4°,116.6°and 296.6°

5 0
3 years ago
-2n = -6 <br> thanks for helping
musickatia [10]

☁️ Answer ☁️

n = 3

Hope it helps.

Have a nice day noona/hyung  ̄▽ ̄

3 0
3 years ago
Read 2 more answers
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