Equation Q: 8y + 7z = 1
Which of these is a possible step used in eliminating the y-term?
(y + z = 6) ⋅ −8
(y + z = 6) ⋅ 7
(8y + 7z = 1) ⋅ 7
(8y + 7z = 1) ⋅ 8
Answer:
Option B is the correct answer.
Step-by-step explanation:
For eliminating y term we need to make coefficients of y in both equations same.
Equation P: y + z = 6
Equation Q: 8y + 7z = 1
Coefficients of y in equation P = 1
Coefficients of y in equation Q = 7
So we need to multiply equation P with 7.
That is (y + z = 6) x 7
Option B is the correct answer.
The annual interest rate of cd was 1.75.
Simple interest is the interest calculated on the principal portion of a loan or the original contribution to a saving amount.
S.I = (P × R × T)/100
Where,
S.I is the simple interest
P is the initial principal balance
R is the interest rate
T is the time in years
According to the given question
We have
Simple Interest, SI = $980
Initial principal balance, P = $7000
Time, T = 8 years
Therefore, the annual interest rate for cd is given by
⇒
⇒
Hence, the annual interest rate of cd was 1.75.
Learn more about simple interest here:
#SPJ2
Not a function.
It's conic section parabola. It's just a relation.
Answer:
y= -1/3x+7
Step-by-step explanation: