Answer:
Step-by-step explanation:
-2x²=-8x+8 means : -2x²+8x-8
the discrinant of the quadratic equation is : delta = b²-4ac
when a=-2 and b=8 and c= -8
calculate delta = (8)²-4(-2)(-8) ......continu
Answer:
Step-by-step explanation:
Bring out the common factor of <em>4 </em>from the equation
9 and 225 share a common factor of 9. Factor the 9 out
Answer:
175-50=125
125/10=12.5
hope this helps
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
The number of miles she drove the van for is 250 miles
<h3>Solving linear equations </h3>
From the question, we are to determine the number of miles Shelly drove the van
The given equation which shows the relationship between the number of days she rented the van, d, and the number of miles she drove the van, m is
20d + 0.7m = 235
Now, if she rented the van for 3 days, that is, d = 3
Putting the value of d = 3 into the equation to determine the value of m
We get
20(3) + 0.7m = 235
60 + 0.7m = 235
0.7m = 235 - 60
0.7m = 175
m = 175 / 0.7
m = 250
Hence, the number of miles she drove the van for is 250 miles
Learn more on Solving linear equations here: brainly.com/question/19081972
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