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3 years ago

Not sure how to solve this

Mathematics

1 answer:

kvasek [131]3 years ago

7 0

Your answer would be B) 337.5 because there is 4 halfs in 2 which means you would multiply 75 by 4 which is 300 and the you have 1/4 which is half of 1/2 so you devide 75 by 2 which is 37.5 and then add that to the 300 which gives you 337.5

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What is equivalent to the equation to 1/4 (8 + 6z + 12) ?

Fed [463]

1/4 (8 + 6z + 12)

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Combine like terms :
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1/4 (6z + 20)

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Apply distributive property :
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1/4(6z) + 1/4(20)
3/2z + 5

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Answer: 3/2z + 5
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7 0

3 years ago

Write three multiplication equations in which the product will have two zerosUse 50 as one of the factors

Yuliya22 [10]

1) 50 × 2 = 100
2) 60×20= 1200
3) 70×20=1400

Hope this helps

4 0

3 years ago

The thumb length of fully grown females of a certain type of frog is normally distributed with a mean of 8.59 mm and a standard

PilotLPTM [1.2K]

Answer:

21.77% probability that a randomly selected frog of this type has thumb length longer than 9.08 mm.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 8.59, \sigma = 0.63$

Calculate the probability that a randomly selected frog of this type has thumb length longer than 9.08 mm.

This is 1 subtracted by the pvalue of Z when X = 9.08. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{9.08 - 8.59}{0.63}$

$Z = 0.78$

$Z = 0.78$ has a pvalue of 0.7823

1 - 0.7823 = 0.2177

21.77% probability that a randomly selected frog of this type has thumb length longer than 9.08 mm.

8 0

3 years ago

Can someone help me please

Ksenya-84 [330]

Answer:

im not sure because im not good at these question but ill let you know when i figure it o

7 0

3 years ago

Janice thinks that 20 hundredths is equivalent to 2 thousandths because 20 hundreds is equal to 2 thousands. Use words and a pla

Anna [14]

1 hundredth is equal to 0.01 therefore 20 hundredths is equal to 0.2. 1 thousandth is equal to 0.001 therefore 2 thousandths is equal to 0.002. Clearly these are not equivalent.
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6 0

3 years ago