Answer: There are 30 questions.
Step-by-step explanation:Easiest way to approach this is to remember the percentage proportion equation. Part/Total= percentage/100.
27/x = 90/100
27/x=.90
x=27/.90
x=30
Therefore the exam has 30 questions.
Answer:
x - 7 < - 12 A: -6 or less ... -7, -8, -9 etc
-9x (90) A: -10
3 + v > -9 A: -11 or more ... -10, 1, 0, 1238 etc
Step-by-step explanation:
1. if it has to be less than -12 the number must be farther left then -12
2. negative times negative = positive
3. use any number higher than -9
Answer:
2 1/2
Step-by-step explanation:
Hey there! I'm happy to help!
We want to find the equation of a line in y-intercept form, which is y=mx+b, where x and y are a point on the line, m is the slope, and b is the y-intercept.
We already know that our slope is -3.
y=-3x+b
We want to solve for b now. We can plug in our point (-9,-9) to solve for it.
-9=-3(-9)+b
-9=27+b
b=-36
So, our equation is y=-3x-36.
I hope that this helps! Have a wonderful day! :D