Answer:
No mistake
Step-by-step explanation:
2x + y = 5
x - 2y = 10
y = 5 - 2x
x - 2(5 - 2x) = 10
x - 10 + 4x = 10
5x - 10 = 10
5x = 20
x = 4
2(4) + y = 5
y = -3
She made no mistake
You can check by plugging in x = 4 and y = -3 into the original equations . They fit exactly.
Answer: 5.61333333 h
If the length between Garden city to dodge city is 84.2km the answer would be 5.61333333 hours [non-terminating decimal]
Step-by-step explanation:
So ummm, i dunno if the answer is right but yeahh
1h = 15 miles
Distance between GC AND DC = 84.2
84.2 * 15 = 5.6133333
Answer: 4.5
<u>Step-by-step explanation:</u>
First, find the points of intersection by solving the system.
y = x² + 2x + 4
y = x + 6
Solve by substitution:
x² + 2x + 4 = x + 6 ⇒ x² + x - 2 = 0 ⇒ (x + 2)(x - 1) = 0 ⇒ x = -2, x = 1
Now, integrate from x = -2 to x = 1
<em>the bottom of the integral is -2 </em>
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=
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= 
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= -3 + 1.5 + 6
= 4.5
Hey the answer is 2713 cm