Ok so whit the data that we got we can proceed like this:
[(-2, 7), (1, 0)]
d = 2/3
Now lets find the difference between x and y terms.
The difference of -2 and 1 is 3,
The difference of 7 and 0 is 7.
x = 3 y = 7
Now Multiply it by two thirds.
2/3 * 3 = 2 2/3 * 7 = 4.7
So the answer is the second option. Hope this helps
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4 0

3 years ago

The height of the triangle is 10 cm. It is decreased by 25%. Calculate the new height.

Brums [2.3K]

Decreased height = 10 x $\frac{100 - 25}{100}$

= 10 x $\frac{75}{100}$

= $\frac{750}{100}$

= 7.5 cm

5 0

3 years ago

Read 2 more answers

Sam is is mixing chemicals during a chemistry lab. She adds a 60% acid solution to 10 mL of a solution that is 10% acid. How muc

soldier1979 [14.2K]

Without any other number values I believe it is just 40%

6 0

3 years ago

Scores on a test are normally distributed with a mean of 70 and a standard deviation of 11.5. find p81, which separates the bott

choli [55]

Answer: The score p81 that separates the bottom 81% from the top 19% is 80.12

Step by step:

First, calculate the "z" value. Z is a normally distributed random variable with 0 mean and standard deviation 1. The score value corresponding to the desired percentile p81 can be determined from a z value as follows:

$z=\frac{s-\mu}{\sigma}\\z_{p81}=\frac{p_{81}-70}{11.5}\\\implies p_{81}=z_{p81}\cdot 11.5+70$

We use a z-table (check online) to find the z value for the 81-st percentile. I found $z_{p81}=0.88$ and so we use that value to calculate the score for the percentile:

$p_{81}=0.88\cdot 11.5+70=80.12$

The score p81 that separates the bottom 81% from the top 19% is 80.12

4 0

4 years ago