Answer:
16 students got an A
Step-by-step explanation:
Set up an equation to compare the ratio to the scores:
![\frac{2}{5} = \frac{x}{40}](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7D%20%3D%20%5Cfrac%7Bx%7D%7B40%7D)
Cross multiply:
80 = 5x
Divide each side by 5:
x = 16
Now, check if ![\frac{16}{40} = \frac{2}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B16%7D%7B40%7D%20%3D%20%5Cfrac%7B2%7D%7B5%7D)
16/8 = 2
40/8 = 5
The ratios are the same! Therefore, 16 students got an A!
Hope this helps! Feel free to contact me if you have any questions :)
[-2 - (-12)] / -5
-14 / -5
2.8
Positive because when you 're dividing 2 negative numbers it a positive
Let
x---------------- > Terrence time to finish a word search
y----------------- > Charlotte time to finish a word search
<span>z----------------- > </span>Frank<span> time</span> to finish a word search
we have that
x=(3/4)*z
y=(2/3)*x
z=32
therefore
x=(3/4)*z----------- > (3/4)*32= 24 min-----> Terrence time to finish a word search
y=(2/3)*x------------ > (2/3)*24=16 min-----> Charlotte time to
finish a word search
The
answer is 16 minutes
Ax^2 + bx + c
multiply the "a" and "c" coefficient
= ac
factor "ac" into a pair of numbers that adds to equal "b"
replace "bx" in the expression with factor pair
group terms and factor
* example problem:
2x^2 + 13x + 6
ac
2*6=12
factor pairs of 12
1*12 = 12
3*4=12
6*2=12
** The factor pair 1 and 12 add to make 13
replace 13x with (x+12x)
2x^2 + x + 12x + 6
group similar terms
(2x^2 + 12x) + (x + 6)
factor
2x(x + 6) + (x + 6)
The same parenthesis (x + 6) can be factored further by combining the outside multipliers 2x and 1
= (2x + 1)(x + 6)
Answer:
1/2 is the slope of the line