Answer:
(2, - 3)
Step-by-step explanation:
given the 2 equations
5x + 3y = 1 → (1)
7x + 3y = 5 → (2)
multiply all terms in (1) by - 1
- 5x - 3y = - 1 → (3)
add (2) and (3) term by term to eliminate the term in y
(7x - 5x) + (3y - 3y) = (5 - 1)
2x = 4 ( divide both sides by 2 )
x = 2
Substitute x = 2 in either (1) or (2) for corresponding value of y
(2) : 14 + 3y = 5 ( subtract 14 from both sides )
3y = - 9 ( divide both sides by 3 )
y = - 3
solution is (2, - 3)
Answer:
A. (4, -4)
Step-by-step explanation:
Equation form x = 4, y = −4
5 h
_ = _
10 28
You would cross multiply and get 140=10h and you divide both sides by 10 and get 14=h. So the flagpole is 14 feet tall.
The answer for this question is 4 hours because 4×12 is 48+20=68
Answer:
i guess you'll get that answer
Step-by-step explanation:
if xy is 3cm then y is 3 divide by 2
where y=
then if xyz=30 to get z you divide 30 by 3
where z=
then x will surely be the same value as y
so u solve for yz=x
