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lutik1710 [3]
3 years ago
11

What is the slope of the line passing through the points (2,7) and (-1,3)?

Mathematics
1 answer:
e-lub [12.9K]3 years ago
5 0
The slope of the line is 4/3
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Which letter represents the y-intercept in the slope-intercept equation of a line: y = mx + b?
sergey [27]
The slope-intercept form of a line is:

y=mx+b

m=slope=(y2-y1)/(x2-x1)

b=y-intercept (the value of y when x=zero)


8 0
3 years ago
Using the formula in model 1, choose the correct answers for the total amount and amount of interest earned in the
Lisa [10]
I don’t know this sorry
5 0
3 years ago
It is claimed that the national average for the price of gasoline in $2.66 per gallon. A sample of 25 gas stations in Hays yield
mafiozo [28]

Answer: 2.396

Step-by-step explanation:

Given : It is claimed that the national average for the price of gasoline in $2.66 per gallon.

i.e. Population mean : \mu= \$\ 2.66 \text{ per gallon}

Sample size : n=25

Sample mean : \overline{x}=\$\ 2.89

Standard deviation : \sigma= 0.48

We assume that the national average for the price of gasoline is normally distributed.

Since the sample size is small (< 30), then we need to calculate t-test statistic for the test .

t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

=\dfrac{2.89-2.66}{\dfrac{0.48}{\sqrt{25}}}=2.39583333\approx2.396

Hence, the test statistic for this test = 2.396

8 0
3 years ago
Will is w years old.
snow_lady [41]

Answer:

Will is 8 years old, Ben is 11 years old, and Jan is 22 years old

Step-by-step explanation:

Since Ben is 3 years older, his age can be represented by w + 3

Jan is twice as old as Ben, so her age can be represented by 2(w + 3)

Set up an equation that adds up these expressions and sets it equal to 41:

(w) + (w + 3) + 2(w + 3) = 41

Simplify, add like terms, and solve for w:

(w) + (w + 3) + 2(w + 3) = 41

(w) + (w + 3) + (2w + 6) = 41

4w + 9 = 41

4w = 32

w = 8

So, Will is 8 years old.

Find Ben's age by adding 3 to this:

8 + 3

= 11

Find Jan's age by multiplying this by 2:

11(2)

= 22

So, Will is 8 years old, Ben is 11 years old, and Jan is 22 years old

5 0
2 years ago
Read 2 more answers
When twice a number is subtracted from 29 the result is 21 find the number
Gre4nikov [31]
X= a number

29 - 2x= 21
subtract 29 from both sides
-2x= -8
divide both sides by -2
x= 4

CHECK:
29 - 2x= 21
29 - 2(4)= 21
29 - 8= 21
21= 21

ANSWER: The number is 4.

Hope this helps! :)
4 0
3 years ago
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