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MariettaO [177]
2 years ago
12

Probability of being a boy in this class is 1/3 and there are 12 girls. Find the total

Mathematics
2 answers:
egoroff_w [7]2 years ago
7 0

Answer:

18

Step-by-step explanation:

The fraction 1/3 is equal to 6/18. There are 12 girls, and 6+12=18, so there is a total of 18 students.

lbvjy [14]2 years ago
4 0

Answer:

18

Step-by-step explanation:

By knowing that 1/3 is the probability of being in the class, you can find that 12 girls and 6 boys would sound perfect to the question. Mathematically you would solve it by 12/0.33333 and it equals 18 of total number of students. If you need more help text me on insta it's jason_lee093

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nignag [31]

Answer:

8/15

Step-by-step explanation:

6 0
2 years ago
An article claims that 12% of trees are infested by a bark beetle. A random sample of 1,000 trees were tested for traces of the
galben [10]

Answer:

0.68

Step-by-step explanation:

The formula for z test is given above as:

z = p' - p/√(pq/n)

p' = sample proportion

= Number of infested samples(trees)/ Number of samples

p' = 127/1000 = 0.127

p = 12% = 0.12

q= 1 - 0.12 = 0.88

n = number of samples = 1000

z = 0.127 - 0.12/√(0.88 × 0.12/1000)

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Therefore, the z test statistic is approximately ≈ 0.68

6 0
3 years ago
How do you solve <br>2v+18=16-4(v+7)
Andreyy89
2v + 18 = 16 - 4(v + 7)

Simplify by removing the parenthesis.

2v + 18 = 16 - 4v - 28

Now, simply add 4v to both sides.

2v + 4v + 18 = 16 - 28

Simplify.

6v + 18 = -12

Now, subtract 18 from both sides.

6v = -12 - 18

Simplify.

6v = -30

Finally, divide both sides by 6.

6v ÷ 6 = 30 ÷ 6

Simplify.

v = 5

~Hope I helped!~

4 0
3 years ago
What is the solution to the following equation 2/3(p+6)=4+2(p-6)
Lesechka [4]
P=9 is the answer to this question

5 0
2 years ago
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Find the measure of the exterior angle. ILL GIVE BRAINILEST
USPshnik [31]

Answer:

108°

Step-by-step explanation:

In order to find the measure of the exterior angle, we first need to solve for a. We know that the sum of a triangles' angles is always 180°.

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180 = 44 + (a + 10) + (180 - 2a)

180 = 44 + a + 10 + 180 - 2a

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Because we know that a = 54, we can now solve for the exterior angle:

2(54) = 108

Therefore, the measure of the exterior angle is 108°.

6 0
3 years ago
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