Please answer number 1. Help!!

Mathematics

1 answer:

lara31 [8.8K]4 years ago

7 0

Answer:

Step-by-step explanation:

The formula of a distance from a point (x, y) to the origin:

$d=\sqrt{x^2+y^2}$

We have P(21, 35). Substitute:

$d=\sqrt{21^2+35^2}=\sqrt{441+1225}=\sqrt{1666}\approx40.8$

You might be interested in

Plsssssssssssssssssssssssss help

liberstina [14]

Answer:

Step-by-step explanation:

okay so what you do little baby is...... bla bla baba....you get it now?-_-

7 0

2 years ago

Suppose SAT Writing scores are normally distributed with a mean of 493 and a standard deviation of 108. A university plans to se

Viefleur [7K]

Answer:

The minimum score required for a letter of recognition is 631.24.

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:

$\mu = 493, \sigma = 108$