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2 years ago

ASAPPP HURRY 25 POINTS!!!

Mathematics

2 answers:

puteri [66]2 years ago

8 0

Answer:

They are equal to each other, because one vertical angle is a reflection of the other. True

They are not equal to each other, because one vertical angle is not a reflection of the other. False

They are equal to each other, because one vertical angle is supplementary to the other. False

They are not equal to each other, because one vertical angle is not supplementary to the other. False

satela [25.4K]2 years ago

7 0

Answer:

They are equal to each other, because one vertical angle is a reflection of the other. True

They are not equal to each other, because one vertical angle is not a reflection of the other. False

They are equal to each other, because one vertical angle is supplementary to the other. False

They are not equal to each other, because one vertical angle is not supplementary to the other. False

Step-by-step explanation: becuase why not

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the ratio of students at a school is 3 boys for every 4 girls. If there are 52 girls how many boys are in the school

vova2212 [387]

There are 39 boys.
First you divide 4 into 52 because there are 3 boys for 4 girls.
Then you take the quotient, 13, and multiply by 3.

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3 years ago

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Natalka [10]

Answer:

its A

Step-by-step explanation:

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2 years ago

The point (5, -2) is rotated 90° about the origin. Its image is

Nadya [2.5K]

Answer:

(2,5)

Step-by-step explanation:

The rule to 90 degrees about the origin is (x,y) to (-y,x). You basically switch the values of y and x but remember the value of y is negative. The value of y is -2 so -2 is now 2 since the rule changed the sign (-2×-y=2) and 5 isnt affected except it is the x value. Just know that since they r switched, x is now 2 and y is 5 when rotated 90 degrees about the origin.

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3 years ago

1/3 plus what number gives you 5/4

stira [4]

The answer is 11/12.

I got the answer by subtracting 5/4-1/3 and the answer would be the answer to the problem.

Hope this helps!

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8 0

2 years ago

A population of monkeys' tail lengths is normally distributed with a mean of 25 cm with a standard deviation of 8 cm. I am prepa

Crank

Answer:

The probability that the mean of my sample will be between 24 and 25 cm

P(24 ≤X⁻≤25) = 0.4772

Step-by-step explanation:

Step(i):-

Given mean of the Population 'μ'= 25c.m

Given standard deviation of the Population 'σ' = 8c.m

Given sample size 'n' = 256

Let X₁ = 24

$Z_{1} = \frac{x_{1}-mean }{\frac{S.D}{\sqrt{n} } } = \frac{24-25}{\frac{8}{\sqrt{256} } } = -2$

Let X₂ = 25

$Z_{2} = \frac{x_{2}-mean }{\frac{S.D}{\sqrt{n} } } = \frac{25-25}{\frac{8}{\sqrt{256} } } = 0$

Step(ii):-

The probability that the mean of my sample will be between 24 and 25 cm

P(24 ≤X⁻≤25) = P(-2≤ Z ≤0)

= P( Z≤0) - P(Z≤-2)

= 0.5 + A(0) - (0.5- A(-2))

= A(0) + A(2) ( ∵A(-2) =A(2)

= 0.000+ 0.4772

= 0.4772

Final answer:-

The probability that the mean of my sample will be between 24 and 25 cm

P(24 ≤X⁻≤25) = 0.4772

4 0

3 years ago