Can someone help me :(( thank you so so much if u do <33:)

Mathematics

2 answers:

saul85 [17]3 years ago

6 0

Answer:

Step-by-step explanation:

8 - 13 = -5

that is your answer

Keith_Richards [23]3 years ago

4 0

Answer:

Step-by-step explanation:

8-13=-5

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There were two trees growing seeds in a backyard. One tree grew at a rate of 1/2 a foot every 2 years. The other grew 4 inches e

denis-greek [22]

Answer:

20 in

Step-by-step explanation:

Tree 1:

Rate of growth = (½ ft/2 yr)

12 yr growth = 12 × (½/2)

= 6/2

= 3 ft

= 36 in

Tree 2:

Rate of growth = (4 in/3yr)

12 yr growth = 12 × (4/3)

= 48/3

= 16 in

Difference:

Tree 1 - Tree 2 = 36 - 16

= 20 in

The trees will differ in height by 20 in.

7 0

4 years ago

n automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are normally di

Paraphin [41]

Answer:

0.3557 = 35.57% probability that one selected subcomponent is longer than 118 cm.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Normally distributed with a mean of 116 cm and a standard deviation of 5.4 cm.

This means that $\mu = 116, \sigma = 5.4$