Answer:
B, C, D, E
Step-by-step explanation:
I just substituted the pairs in so
14 = 6(3) - 4(1)
14 = 18 - 4
14 = 14 yes that works
let's try another pair just so you see
14 = 6x - 4y
14 = 6(-1) - 4(-5)
14 = -6 - (-20)
14 = 14 yes that works
14 = 6(1) - 4(-2)
14 = 6 - (-8)
14 = 14 yes that works
14 = 6(14) - 4(-4)
14 = 84 - (-16)
14 = 100 nope
14 = 6(4) - 4(2.5)
14 = 24 - 10
14 = 14 yes that works
9514 1404 393
Answer:
(d) x = 14√3; y = 14
Step-by-step explanation:
The side length ratios in a 30°-60°-90° triangle are 1 : √3 : 2. That is, the short side (y) is half the length of the hypotenuse (28). Only one answer choice matches ...
y = 28/2 = 14
x = y√3 = 14√3
_____
It is a good idea to remember these ratios. They show up in a lot of problems.
25 miles, if you need an explanation of how i got the answer, just ask :)
Let number of driveways , she shoveled on Sunday = x
And for 4 driveways , Kendra charges = 4*11=44
Therefore,
143 = 44 + 11x
And that's the model for the given situation .
Subtracting 44 from both sides,
143-44 = 11x
99 = 11x
Dividing both sides by 11
x = 9
Therefore she shoveled 9 driveways on Sunday .
Answer:
No solution
Step-by-step explanation:
Step 1: Write out equations
y = -1/4x + 2
3y = -3/4x - 6
Step 2: Substitution
3(-1/4x + 2) = -3/4x - 6
Step 3: Distribute
-3/4x + 6 = -3/4x - 6
From here, we can see that we have the same slope but different y-intercept. This means that the 2 lines are parallel and therefore never intersect.
Alternatively, you could graph the equations and see that the 2 lines are parallel and never intersect.
