Answer:
C
Step-by-step explanation:
Given the 2 equations
6x + 2y = 8 → (1)
12x + y = 22 → (2)
Multiplying (2) by - 2 and adding to (1) will eliminate the y- term
- 24x - 2y = - 44 → (3)
Add (1) and (3) term by term, thus eliminating y
- 18x = - 36 ( divide both sides by - 18 )
x = 2
Substitute x = 2 into either of the 2 equations and solve for y
Substituting into (1)
6(2) + 2y = 8
12 + 2y = 8 ( subtract 12 from both sides )
2y = - 4 ( divide both sides by 2 )
y = - 2
Solution is (2, - 2 ) → C
Answer:
x= -7/10 or x= -0.7 , y= 7
Step-by-step explanation:
Find the x-intercept: Find the y-intercept:
y= 5×2+10x-3 y= 5×2+10x-3
0=10+10x-3 y= 5×2+10×0-3
0=7+10x y= 7
-10x=7
x=-7/10
<span>Mrs.
Hanover borrows 1400 dollars at a rate of 5.5% per year.
She paid it within 8 months only, find the interest rate that she paid.
First let’s calculate the 5.5% rate per year
=> 1400 x 0.055
=> So in 1 year, she will 77 dollars as interest.
Now, in 1 year there are 12 months., let’s divide 5.5 by 12
=> 5.5 / 12 = 0.46 per month
=> 0.46 x 8 months = 3.67% in 8 months.
Now, let’s get the interest rate
=> 1 400 x 0.037
=> 51.8
</span>
Answer: 28
Step-by-step explanation: i got the same test
48x² + 8 = 8(6x² + 1) [we factor out 8, because 48 and 8 are divisible by 8]