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inna [77]
3 years ago
12

Write y = 2x^2 + 8x + 3 in vertex form.

Mathematics
1 answer:
krek1111 [17]3 years ago
3 0

Answer:

  y = 2(x + 2)^2 – 5

Step-by-step explanation:

When y = ax^2 +bx +c is written in vertex form, it becomes ...

  y = a(x +b/(2a))^2 +(c -b^2/(4a))

The constant term in the squared binomial is b/(2a) = 8/(2(2)) = +2. Only one answer choice matches:

  y = 2(x +2)^2 -5

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How many lines of symmetry does a regular polygon with 16 sides have? A. 2 B. 8 C. 32 D. 16
denpristay [2]

Answer:

C. 32

Step-by-step explanation:

There are 16 lines of symmetry passing through the vertex's and another 16 passing through the mid points of the sides

8 0
3 years ago
Solve the equation 18y – 17 = 7 for y. <br><br> A. 1/2 <br> B. 3/4 <br> C. 4/3 <br> D. 4/5
Ivan

the answer is C. 4/3

3 0
3 years ago
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G(x)= l2xl +2<br><br> find domain and range
Romashka [77]

The domain of the function g(x)=l2xl +2 is all real numbers and the range is from (0,∞).

Given g(x)= l2xl +2

First of all we know that modulas gives two values for x<0 and x>=0.

The function g(x) if opened gives two values.

for x>=0 g(x)=2x+2

for x<0 g(x)=-2x+2

because we have not told about the description about x so we can put any value in the function.

So the domain is all real numbers.

Now when we take g(x)=2x+2 for x>=0

putting x=0 we get 2 and rest are positive values so the value of g(x) keeps increasing as we increase the value of x. So here range is [2,∞).

Now take g(x)=-2x+2 for x<0

putting smallest number starting from zero but not 0 we will get a number near to 0 but not zero and because when a negative number multiplies with -2 it becomes positive and increase the value of g(x) so here the range becomes (0,∞).

When we talk about overall range it will be [2,∞) ∪(0,∞)

it will be (0,∞).

Hence the domain of the function g(x) is all real numbers and range is from 0 to infinity.

Learn more about domain and range at brainly.com/question/2264373

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2 years ago
X^2(y-z)+y^2(z-x)+z^2(x-y)
Daniel [21]
I think you just expand itlike this‍♀️

7 0
3 years ago
a patient in a local hospital receives 300 ml of medication every 4 hours. how many liters of medication does the patient receiv
Arte-miy333 [17]

Answer:

1800

Step-by-step explanation:

24 divided by 4 equals 6. So 6 multiplied by 300 equals 1800.

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3 years ago
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