Solve the following equation-7x-4y=-4 -9x-5y=-6
2 answers:
Answer:
.
Step-by-step explanation:
-7x - 4y = -4 (times 5) -35x - 20y = -20
-9x - 5y = -6 (times 4) -36x - 20y = -24
.
Eliminate both equations
<u>-36x - 20y = -24 </u> <u> </u>
.
Substitute the value of x to one of equations
Step-by-step explanation:
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Answer:
Yes, Sally has enough money to buy 28 cans of soda.
Step-by-step explanation:
Yes, because £10 = 1000p
1000p / 28p = 35 cans
35 cans < 28 cans
So Sally has enough money for 28 cans.
Answer:
Step-by-step explanation:
place x = 19
f(19) = 3 / 19 + 2 - Sqrt 21 - 3
= 3/21 - 4
= - 81/21
= - 27/7
Answer:
Option A.
Step-by-step explanation:
we know that
The volume of the cylinder is equal
where
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h is the height of the cylinder
we have
substitute
Answer: 9.3d−g-10.4f
Step-by-step explanation: