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Schach [20]
3 years ago
5

What is the equation of the line that passes through the points (−2, 1) and (1, 10)?

Mathematics
2 answers:
Anna71 [15]3 years ago
6 0
Slope = (10-1)/(1+2) = 9/3 = 3

y = mx + b
1 = 3(-2) +b
1 = -6 + b
b = 7

equation

y = 3x + 7  
or
3x - y = -7

answer is <span>3x − y = −7 (first choice)</span>
____ [38]3 years ago
5 0
The anser would be the first one  (3x - Y =  -7)
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Ava estimates that 475 songs will fit on her iPad. The actual amount of songs that fit is 350. Find her percent of error.
alukav5142 [94]

Given:

Ava estimates that 475 songs will fit on her iPad.

The actual amount of songs that fit is 350.

To find:

The percent of error.

Solution:

We know that,

\text{Percent error}=\dfrac{\text{Estimated values - Actual value}}{\text{Actual value}}\times 100

Putting the given values, we get

\text{Percent error}=\dfrac{475-350}{350}\times 100

\text{Percent error}=\dfrac{125}{350}\times 100

\text{Percent error}=\dfrac{250}{7}

\text{Percent error}\approx 35.71\%

Therefore, the percent of error is 35.71%.

3 0
3 years ago
How many gallons of a 90% antifreeze solution must be mixed with 90 gallons of 20% antifreeze to get a mixture that is 80% antif
lozanna [386]

Answer:

540

Step-by-step explanation:

Amount of antifreeze in the 90% solution + amount of antifreeze in the 20% solution = amount of antifreeze in the 80% solution

0.90 x + 0.20 (90) = 0.80 (x + 90)

0.90 x + 18 = 0.80 x + 72

0.10 x = 54

x = 540

You need 540 gallons of 90% antifreeze solution.

7 0
3 years ago
-5÷(-3 1/3)= how do I solve this?​
liberstina [14]

Answer:

3/2 or 1.5

Step-by-step explanation:

Convert (-3 1/3) to -10/3

Now its -5/(-10/3)

The 3 is multiplied by the -5

(-5)(3)/(-10)

=(-15)/(-10)

The negatives cancel and it reduces to 3/2

8 0
3 years ago
Read 2 more answers
20 pts, try to find short story and novel pages, A novel has 13 times as many pages as a short story. The combined number of pag
brilliants [131]

Answer:

short story has 32 pgs

novel has 416 pgs

Step-by-step explanation:

a novel (N) has 13 times as many pages as a short story (x) so, N = 13X

total pages is the equation N + x = 448

plug the equation for N into this

13x + x = 448, combine like terms

14x = 448, divide both sides by 14

x = 32. so now we know that the short story has 32 pages. subtract that from 448. and the novel has 416 pages.

8 0
3 years ago
A storage company must design a large rectangular container with a square base. The volume is 6750ft3. The material for the top
GuDViN [60]
Ответ 163.54
Ниже расписано описание

4 0
3 years ago
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