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Eddi Din [679]
3 years ago
12

Write an equation through the points (-3,7) and (1,-1)​

Mathematics
1 answer:
Aliun [14]3 years ago
8 0

The slope is -2.

The slope is the rise over the run. Because the line goes down from left to right, it makes the value negative. For every one the it moves to the right, the line goes down two units.

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Maria received a $90 gift card for a coffee store. She used in buying some coffee that costs $7.81 per pound. After buying the c
sergiy2304 [10]

Answer:

Im not sure but im going to try

Step-by-step explanation:

First you subtract $7.81 from $90 until you get to $50.95 and then you count how many times you subtract and your answer is 5 pounds of coffee.

5 0
3 years ago
Read 2 more answers
On the last day of school, Mrs. Awesome gave jelly beans to her class. She gave each boy as many jelly beans as there were boys
professor190 [17]

Answer:

28 students

Step-by-step explanation:

Let x be the number of girls in the class. There were two more boys than girls in her class, then the number of boys is x + 2.

Mrs. Awesome gave each boy as many jelly beans as there were boys in the class, so each of x + 2 boys got x + 2 jelly beans, so

Number of boys = x + 2

Number of jelly beans each boy got = x + 2

Total number of jelly beans all boys got = (x + 2)(x + 2)

Mrs. Awesome gave each girl as many jelly beans as there were girls in the class, so each of x girls got x jelly beans, so

Number of girls = x

Number of jelly beans each girl got = x

Total number of jelly beans all girls got = (x)(x)

Hence,

Total number of jelly beans class got = (x + 2)(x + 2) + (x)(x)

Mrs. Awesome brought 400 jelly beans, and when she finished, she had six jelly beans left, so she gave 400 - 6 = 394 jelly beans to the calss.

So,

(x+2)(x+2)+(x)(x)=394\\ \\x^2+2x+2x+4+x^2=394\\ \\2x^2+4x+4-394=0\\ \\2x^2+4x-390=0\\ \\x^2+2x-195=0\\ \\D=2^2-4\cdot (-195)=4+780=784\\ \\\sqrt{D}=28\\ \\x_{1,2}=\dfrac{-2\pm 28}{2\cdot 1}=-15,\ 13

Number of girls cannot be negative, so x = 13, x + 2 = 15 and total number of students is 13 + 15 = 28

3 0
3 years ago
Find the exact circumference of a circle with the given radius.
kozerog [31]
We know, Circumference = 2π * x/2 = <span>π x

In short, Your Answer would  be: Option B

Hope this helps!</span>
8 0
2 years ago
Read 2 more answers
Find the circumference of the circle in terms of pi
madam [21]
It's 78π inches so probably d.
3 0
3 years ago
If f(x) = 2х2 + 3 and g(x) = х2 -7, find (f- а)(x).
Lerok [7]

Answer:

C. x^2 -4

Step-by-step explanation:

What you do is subtract the functions as said by

(f-g)(x).

so:

f(x)-g(x)

(2x^2+3) - (x^2 -7)

2x^2 -x^2 +3 - 7= x^2 -4

7 0
3 years ago
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