Answer:
b)Add the equations to eliminate x.
Step-by-step explanation:
y= x+20
y= - x+2
Result of the addition: (-x cancels x)
2y = 22
y =11
11=x +20 -9 = x
11=9+2
11 = -9 +20
Answer:
no he is not correct because he did not add 234 and 1192 to find the value of h, which is 1426
Step-by-step explanation:
h-234 = 1192
add 234 to each side
h-234+234= 1192+234
h = 1192+234
h = 1426
Answer:
The roots of the equation are x=-3 and x=-2.5
Step-by-step explanation:
<u><em>The correct quadratic equation is</em></u>
2x^2+11x+15=0
we know that
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
therefore
The roots of the equation are x=-3 and x=-2.5
Answer:
- 25
Step-by-step explanation:
It will travel 39.11 miles on one gallon of fuel
hope it helps :)