Help me answer this

Mathematics

1 answer:

kari74 [83]3 years ago

4 0

7 to 11 because you divide both sides by 3

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Three tenths times twelve

Sholpan [36]

Answer:

3.6

Step-by-step explanation:

0.3x12=3.6

Because you know that 12x3=36, so 12x0.3=3.6!

Good luck!

7 0

3 years ago

You earned a 90% and an 85% on your first two homework assignments. What score do you need to earn on the third assignment to ha

san4es73 [151]

90+85+x/3=83
175+x = 249
X=74

5 0

3 years ago

The measure of an angle is 51 degrees

ki77a [65]

Supplementary angle = 180

180 - 51 = x

x = 129

C) 129 degrees is your answer

hope this helps

5 0

3 years ago

According to the National Vital Statistics, full-term babies' birth weights are Normally distributed with a mean of 7.5 pounds a

Sav [38]

Answer:

68.26% probability that a randomly selected full-term pregnancy baby's birth weight is between 6.4 and 8.6 pounds

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:

$\mu = 7.5, \sigma = 1.1$