Find the slope of the line. A -2 B 2 C -1/2 D 1/2

Help as soon as possible please

marta [7]

(3x + 5)° + (10x - 7)° = 180°

13x + (-2) = 180

13x = 180 + 2

13x = 182

x = 14

∠QRT = 3 * 14 + 5 = 42 + 5 = 47°

∠TRS = 10 * 14 - 7 = 140 - 7 = 133°

6 0

4 years ago

Before the 1936 US presidential election, a popular poll predicted that Alfred Landon would comfortably win against Franklin D.

Vinvika [58]

Answer:

wrong subject

Step-by-step explanation:

3 0

3 years ago

Makayla leaves a tip of $15. This was 15% of the bill before the tip.

Minchanka [31]

Answer:

100

Step-by-step explanation:

both the percentage and the money have the same number, and there's always 100% so it'd be 100 before the tip

8 0

3 years ago

Aaa help pls with this question

amm1812

It wont open it up, so no one can really help

7 0

3 years ago

There are two college entrance exams that are often taken by students, Exam A and Exam B. The composite score on Exam A is appro

elena55 [62]

Answer:

B.The score on Exam A is better, because the percentile for the Exam A score is higher.

Step-by-step explanation:

Problems of normally distributed samples can be 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:

Two exams. The exam that you did score better is the one in which you had a higher zscore.

The composite score on Exam A is approximately normally distributed with mean 20.1 and standard deviation 5.1.

This means that $\mu = 20.1, \sigma = 5.1$ .