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Aneli [31]
3 years ago
7

ASAP

Mathematics
1 answer:
lesya692 [45]3 years ago
5 0
The given regression shows the relationship between the numbers of car washed(x) and the amount earned for charity(y).

y = 10x + 20

We are to calculate the amount of charity if 50 cars are washed. Number of cars are represented by x, so by substituting x = 50 in above equation we can find the amount of charity that is earned by washing 50 cars.

y = 10(50) + 20 = $ 520

Thus, the charity can earn $520 if 50 cars come in for a wash.
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write an equation in point-slope form and slope-intercept form for a line that passes through point(4,-1) and has a slope of -3
melamori03 [73]

Answer:

Point Slope: (y-(-1)=3(x-4)

Step-by-step explanation:

y-y1=m(x-x1) Point Slope Form\\plug in:\\y-(-1)=3(x-4)\\

Slope Intercept is y=mx+b\\Find Y Int (b):\\b=-13\\Plug in;\\y=3x-13

3 0
3 years ago
Each picture shows how a mapping, f, maps elements of a domain onto a range.
deff fn [24]

Answer:

Top left

Step-by-step explanation:

If an x value (domain) leads to more than one y-value (range), it is not a function. In other words, if each input value leads to only one output value, it is a function. It's still a function if the y-value leads to multiple x-values.

6 0
3 years ago
If the area of a circle is 25 pi, find the length of an arc with a central angle of 240? Any help is appreciated please.
almond37 [142]

Answer:

11.81pi

Step-by-step explanation:

r^2=25pi

r=8.86

length=2pi(8.86)(240/360)

=17.72pi(2/3)

=11.81pi

6 0
3 years ago
On a certain day the temperature changed a rate of -3 degrees Fahrenheit per hour how long did it take for the temperature to ch
swat32

Answer: is 11 hours.

6 0
3 years ago
Nine new employees, two of whom are married to each other, are to be assigned nine desks that are lined up in a row. If the assi
meriva

Answer:

The probability is 0.8

Step-by-step explanation:

The key to answering this question is considering the fact that the two married employees be treated as a single unit.

Now what this means is that we would be having 8 desks to assign.

Mathematically, the number of ways to assign 8 desks to 8 employees is equal to 8!

Now, the number of ways the couple can interchange their desks is just 2 ways

Thus, the number of ways to assign desks such that the couple has adjacent desks is 2(8!)

The number of ways to assign desks among all six employees randomly is 9!

Thus, the probability that the couple will have adjacent desks would be ;

2(8!)/9! = 2/9

This means that the probability that the couple have non adjacent desks is 1-2/9 = 7/9 = 0.77778

Which is 0.8 to the nearest tenth of a percent

4 0
3 years ago
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