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k0ka [10]
3 years ago
10

4 The points (2, r) and (4, -8) lie on a line with slope - 1. Find the missing coordinate r.

Mathematics
1 answer:
maksim [4K]3 years ago
6 0
R=-6


Mark brainliest please


Hope this helps you
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if you could JUST TELL ME HOW TO SOLVE IT that would be great. Or you could send a pic of your paper. thanks
fgiga [73]
Lets p = salesman's commission as percent
15,200 * p = 912
p = 912/ 15,200
p = 0.06
p = 6%

answer
6%
3 0
3 years ago
What is the area of a circle with a radius of 9 cm? (Express your answer using π.)
jekas [21]
Area of a circle= <span>π * r^2
<span>π*9^2
</span>π*81= 81<span>π
</span>Your answer is A.</span>
4 0
3 years ago
Read 2 more answers
What is the y intercept of the equation shown below? <br><br> a -1/2<br> b -2<br> c 0<br> d 4
Anon25 [30]
It’s going to be -2 because the y intercept is when x=0.
5 0
3 years ago
A person must score in the upper 8% of the population on an IQ test to qualify for membership in MENSA, the international high-I
Cloud [144]

Answer:

A person must get an IQ score of at least 138.885 to qualify.

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 = 115, \sigma = 17

(a). [7pts] What IQ score must a person get to qualify

Top 8%, so at least the 100-8 = 92th percentile.

Scores of X and higher, in which X is found when Z has a pvalue of 0.92. So X when Z = 1.405.

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

1.405 = \frac{X - 115}{17}

X - 115 = 17*1.405

X = 138.885

A person must get an IQ score of at least 138.885 to qualify.

5 0
3 years ago
Read 2 more answers
Please help me solve ​
IgorLugansk [536]
Here’s the answer
Enjoy

3 0
3 years ago
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