1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andrezito [222]
3 years ago
13

Use the zeros of the following quadratic to find the x-value of the vertex.

Mathematics
1 answer:
jarptica [38.1K]3 years ago
3 0
Just use the following formula:
v= (\frac{-b}{2a}, f( \frac{-b}{2a}))

In this problem, b=2 and a=1

Substitute the values into the formula.

v=(-(2)/2(1), f(-(2)/2(1)))
v=(-1,f(-1))
v=(-1,(-1)²+2(-1)-8)
v=(-1,(1-2-8))
v=(-1,-9)

Therefore, the vertex is (-1,-9).

However, you only wanted the x-value which is in fact -1.

Therefore, the correct answer is "C. -1."


To use the zeroes, just solve the quadratic and find the mean of the two zeroes.

So,
m=\frac{x_{1}+x_{2} }{2}.


Hope this helps!
You might be interested in
Help I'm bad at math :(((((
kenny6666 [7]
The answer is C

277 units^2
3 0
2 years ago
Read 2 more answers
Word Problem On Division
VMariaS [17]
Answer is 13-1/2 cups
Step by step
We know 1 cup is = 2/9 of a liter
We know we are working with 3 liters = how many cups
So first I want my 3 liters in a like denominator based fraction
1 liter is = 9/9 so 3 liters is = 27/9
I want to divide 27/9 by 2/9, the part of a liter that equals 1 cup
When I divide a fraction, I flip one fraction and multiply
27/9 x 9/2 = 243/18, simplify to 13-1/2 cups
Problem solved

You can check your work
Multiply 13-1/2 cups x 2/9
Change your whole number to a mixed fraction
27/2 x 2/9 = 54/18, simplify it equals 3 liters!

6 0
2 years ago
Ben bowled 121 and 184 in his first two games. What must he bowl in his third game to have an average of at least 170​?
vagabundo [1.1K]

Answer:

205

Step-by-step explanation:

Were gonna start by writing an equation (121+184+x)/3=170 because were adding a 3rd value to the average and x is going to be our value that were looking for. If you solve that, you get 205. Hope this helps.

6 0
3 years ago
Domain and range helllllllllllllllllllllllllllppppp
charle [14.2K]
Na I don't wanna do this one

7 0
3 years ago
A football field measures 300 feet in length. It can also be expressed as approximately 5 7x 10miles. If the
kogti [31]

Answer:

The question is incomplete or there are details missing.

Step-by-step explanation:

From similar parameters, if by what they mean is that the football field measures 300feet in length, which is the dimension in length, this can also be in terms of metre.

The conversion factor between ft and metre is 1ft = 0.3048m

As such, we can only have variations or the length of the field measured may have ranges of measurement,  but as it is the length of the field can not be expressed in terms of miles, the most reasonable vale of n we can get will be the least measurement in metres.

3 0
3 years ago
Other questions:
  • 12d+34&gt;100<br> Please help will brainliest
    13·1 answer
  • A theater can seat 957 people. The number of rows is 4 less than the number of seats in each row. How many rows of seats are the
    8·1 answer
  • find zeros and y intercept and describe the end behavior in proper notation. then sketch the graph. 3x^3+2x^2-12x-8
    15·1 answer
  • The sum of three consecutive odd integers is –15. What are the numbers?
    12·1 answer
  • Solve for x. -2 (7 - 4x) = 1/2 (4 + 16x) - 16
    10·1 answer
  • Triangle LMN, with vertices L(-9,5), M(-4,2), and N(-6,9), is drawn inside a rectangle, as shown below.
    11·2 answers
  • PLEASE HELP ME this is urgent
    5·2 answers
  • A typhoon is moving at the speed of 80 kph. How many kilometers will it 29
    6·1 answer
  • How can I solve this 9x-5-(6-)​
    10·2 answers
  • What is the answer for 290 x 12 estimate
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!