Another way to do it is
2x-y=17
x-y=10, x=10+y
substitute x=10+y for x in 2x-y=17 and get
2(10+y)-y=17
20+2y-y=17
20+y=17
subtract 20 from both sides
y=-3
subsitute y=-3 into equation x-y=10
x-(-3)=10
x+3=10
subtract 3 from both sides
x=7
or subsitute into 2x-y=17
2x-(-3)=17
2x+3=17
subtract 3 from both sides
2x=14
divide both sides by two
x=7
Answer:
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Step-by-step explanation:
1206 is right answer
Answer:
3/4 and 15/20
Step-by-step explanation:
Hope it helps
Answer:
k = 4, t = 2
Step-by-step explanation:
Express 2025 as a product of its prime factors
2025 = × 5², that is
× 5² = ×
Comparing exponents of same bases on both sides, gives
k = 4 and t = 2
Answer:
y(v) = - 10
Step-by-step explanation:
y''(v) =
y'(v) = + C
y'(2) = + C = 6 + 2 + 4 + C = 12 + C = 0
C = -12
So, y'(v) = -12
Now, y(v) = + D
Now, y(-1) = + D = 2
+ D = 2
12 + D = 2
D = -10
Wow! Now y(v) = - 10
I spent a long time typing this, so I hope it is correct for you.