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Alenkasestr [34]
3 years ago
7

HELP NOWhhhhhhhhhhhhhhhhhhhhhhh

Mathematics
2 answers:
DerKrebs [107]3 years ago
8 0

Answer:

r = 1/5

Step-by-step explanation:

Substitute x=15 and y=3 into the equation given.

Transpose so that r = 3/15

Simply 3/15

r = 1/5

marshall27 [118]3 years ago
3 0

Answer:

4.4/22 = .2

r=.2

Step-by-step explanation:

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Find the Y-coordinate of point P that lies 1/3 along segment RS, where R (-7, -2) and S (2, 4).
QveST [7]

Solution:

Given that the point P lies 1/3 along the segment RS as shown below:

To find the y coordinate of the point P, since the point P lies on 1/3 along the segment RS, we have

\begin{gathered} RP:PS \\ \Rightarrow\frac{1}{3}:\frac{2}{3} \\ thus,\text{ we have} \\ 1:2 \end{gathered}

Using the section formula expressed as

[\frac{mx_2+nx_1}{m+n},\frac{my_2+ny_1}{m+n}]

In this case,

\begin{gathered} m=1 \\ n=2 \end{gathered}

where

\begin{gathered} x_1=-7 \\ y_1=-2 \\ x_2=2 \\ y_2=4 \end{gathered}

Thus, by substitution, we have

\begin{gathered} [\frac{1(2)+2(-7)}{1+2},\frac{1(4)+2(-2)}{1+2}] \\ \Rightarrow[\frac{2-14}{3},\frac{4-4}{3}] \\ =[-4,\text{ 0\rbrack} \end{gathered}

Hence, the y-coordinate of the point P is

0

8 0
2 years ago
A basketball player made 80 baskets in a season. Of these, 20% were three-point shots. Determine the number of three-point shots
Amanda [17]
The answer is 16 three-point shots.
The way to do this is by doing 100 / 20 which is 5, and then you would do the total (80) divided by 5 which is 16
8 0
3 years ago
Which of the following represents a reasonable domain (set of inputs) for this function?
lukranit [14]
All real numbers is the answer
4 0
3 years ago
The inverse of this equation
In-s [12.5K]

Answer:

{f}^{ - 1}(x)  =  \frac{x + 11}{ - 5}

Step-by-step explanation:

f(x) =  - 5x - 11 \\  - 5x - 11 =x \\  - 5x = x + 11 \\  {f}^{ - 1}(x)  =  \frac{x + 11}{ - 5}

7 0
3 years ago
The heights of male students are normally distributed with a mean of 160 cm and a standard deviation
kompoz [17]

Answer:

2.28%

Step-by-step explanation:

As this is normally distributed, we can use z scores to find the percentage.

First, find the z-score for 148.

The z-score that you get is:

(148-160)/2=2

As we see that z=2, we can use a calculator or a z-score chart to find the percentage less than a z score of 2.

I used my chart and found: 2.28%

4 0
3 years ago
Read 2 more answers
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