MATHEMATICS MIDDLE SCHOOL

Suppose h(x)=2x^2+x-7 solve h(x)=8​

Answers

Answer 1
Answer: X = {-3, 5/2}

You have to subtract 8 from both sides then factor the trinomial into two binomials

Related Questions

Mr.Ravenheads car averages 23.75 miles per gallon of gasoline. Express this amount as a mixed number in simplest form.
Need help fast answer with work shown
1/4b + 4/3b + 7/12simplify and combine like terms
How are you?(￣ω￣;)（＾～＾）
−7−4p−(−5)Combine the like terms to create an equivalent expression:

How do you solve this problem, it's confusing for me. Question : Kermit hopped 10 feet to the right. He then took three green power hops to the left. If the total jump length is 28 feet, how long is a green power jump?

Answers

if 28 is the distance that he is from the starting point then
so 10 to the right
+10
then 3 to the left
-3powerjump
10-3pj
total jump length must be to the left because 10 is less than 28 and he can't jump negative feet
absolute value
|10-3p|=28
since we assume that he jumped 28 feet to the left, we can assuume
10-3p=-28
subtract 10 from both sides
-3p=-38
divide by -3
powerjump=12 2/3

or if the problem is he jumped 28 feet in total then
10+3p=28
subtract 10 from both sdies
3p=18
divie by 3
powerjump=6
28-10=18

18 / 3 = 6

each power hop is 6 feet long

Kevin has 9 stamps that have the image of a boat on them.If this is the 30% of the total collection of stamps Kevin has, how many stamps does he have?

Answers

you would use proportions for it so because percents are always out of 100 it would be 30/100 and part of the stamps are 9 when doing that think of the ratio as part/whole so it would be 9/x there for the equation would be 30/100 =9/x
then you would cross multiply so the new and improved equation is 900= 30x
divide by 30 and you get 30
Kevin has 30 stamps in total

Answer:

He now has 30 stamps

Step-by-step explanation:

Estimate how many 12 inch rulers will be about the same length as a the object flag

Answers

Hmmmm.....what flag?  Sorry,  need specifics!

Find the percent of increase from 350 to 470. Round to the nearest tenth of a percent if necessary.

Answers

The answer is 34.2857 percent and rounded is 34.3 percent

What goes into 49 and 50 evenly

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nothing, goes into 49 and 50. 
7x7=49  and 5x10=50 to let you know

Dao has 2 3/8 pounds of hamburger meat. He is making 1/4 -pound hamburgers. Does Dao have enough meat to make 10 hamburgers? Explain.

Answers

To find if there is enough, here is the equation
(1)/(4)×(10)/(1)
You multiple across
1×10=10 and 4×1=4=(10)/(4)
Then you divide the numerator(top) by the denominator(bottom)
10÷4=2 (2)/(4)⇒2(1)/(2)
To see if they equal, you multiply just the fraction by four
(1)/(2)×(4)/(4)=(4)/(8)
Thus the answer is 2 (4)/(8) which is larger than 2 (3)/(8)
Dao has enough meat to make 10 hamburgers because 2(4)/(8)>2 (3)/(8)
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