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
Elan Coil [88]
4 years ago
14

Identify the vertex for the graph of y = 2x2 + 8x − 3

Mathematics
1 answer:
xxTIMURxx [149]4 years ago
5 0
X = -b/2a
x = -8/4
x = -2
Plug -2 in for x and solve for y
y = 2(-2)^2 + 8(-2) -3
y = 8 -16 -3
y = -11
Vertex (-2, -11)
You might be interested in
The sum of three consecutive odd numbers is 69. What are the three numbers?
n200080 [17]

Answer:

21, 23, 25

Step-by-step explanation:

Ok, so this one may seem a little tricky, so I'll try to explain it as best as I can. :)

So because they are consecutive odd numbers, that means they are odd numbers that are one after the other. This means each number is 2 apart from the next. So by using this, we know that there is a difference of 6 between the highest and lowest number. Now let's try and make an equation:

3o + 6 = 69

Now in order to get O by itself we have to subtract 6 from both sides:

3o = 63

Now we just have to divide by three on both sides:

o = 21

So now, we know that the lowest number is 21, but we have to add 2 to get 23, and then another 2 to get 25.

Hope this helps :)

5 0
3 years ago
Read 2 more answers
Which function is equivalent to g (k) = -k'+ 6k-9?
nata0808 [166]
I believe it’s g(k)=(-k- 3)(-k+3)
5 0
4 years ago
Read 2 more answers
Need help?? Plsss. Make sure to explain why is it that answer
Archy [21]

Remember, volume is length x width x height. (lxwxh)

5+3 inches is the apparent width. (8)

7+7 inches is the height. (14)

The length is seemingly difficult to solve, but it's easy when you get the hang of it.

You need to divide the toolbox into shapes you can find the volume for and then add it all together.

Let's take 14x5x(7+7). 980.

Now the other half. 16x3x(7+7). 672.

Add.

Volume is 1652 inches.

7 0
3 years ago
A lock is using 3 digits from 1 to 7 as its lock combination, the numbers can be repeated. How many different possible lock comb
Oksi-84 [34.3K]

The question is an illustration of selection (or combination)

The number of lock combination is 343

The given parameters are:

<em />n = 7<em> --- the number of digits to select from</em>

<em />r = 3<em> --- the number of digits the lock uses</em>

<em />

Because the digits can be repeated, the number of lock combinations is:

Lock = n^r

So, we have:

Lock = 7^3

Lock = 343

Hence, the number of lock combination is 343

Read more about combinations at:

brainly.com/question/15301090

7 0
3 years ago
If triangle ABC is reflected across line m, the new coordinates will be located at A’(2, -4) B’(7, -7) C’(-2, -7).
Dennis_Churaev [7]

Answer:

the answer is false

Step-by-step explanation:

because the coordinates for B and Care wrong they should be

B(7,-9)

C(-2,-9)

3 0
3 years ago
Other questions:
  • #10 with explanation please
    8·1 answer
  • A botanist separates plants into equal groups of 5 for an experiment. Is the total number of plants in the experiment prime or c
    5·2 answers
  • A washer and a dryer cost $795 combined. The washer costs $55 less than the dryer. What is the cost of the dryer?
    10·2 answers
  • HELP NOW BRANLIEST AND 15 POINTS​
    8·1 answer
  • The circle below is centered at the point (2, -1) and has a radius of length 3.
    13·1 answer
  • Simplify the quantity (36−5)−4×2<br><br><br><br> who ever gets it right it will give them 100 points
    13·2 answers
  • Please help if you know the answer
    15·1 answer
  • Devon has two wood boards that are the same length. He divides each board into
    6·1 answer
  • Find the mean 64, 65, 64, 61, 61, 57, 51
    9·2 answers
  • Plz help due tonight
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!