What is the equation of a parabola whose vertex is (-4,7) and whose graph is 1/2 as wide as y=x^2

Answers

Answer 1
Answer: The\ vertex\ form:y=a(x-h)^2+k\n\nvertex\ (h;\ k)\to(-4;\ 7)\n\nthen:y=a[x-(-4)]^2+7=a(x+4)^2+7\n\ngraph\ is\ half\ as\ wide\ as\ y=x^2\ then\ a=2\n\nAnswer:y=2(x+4)^2+7\n\ny=2(x^2+8x+16)+7=2x^2+16x+39

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12x - 23 + 2x = -5

Solve the math equation above?

Answers

12x-23+2x=-5

combine the like terms (x) so,

12x+2x-23=-5

so, this will give you: 14x-23=-5

now, remove the numbers

so, 14x=-5+23

this will give you : 14x+18

x =  (18)/(14)

x = 1.285714286




12x - 23 + 2x = -5
 14x-23=-5 /+23
 14x=18
 x=18/14=9/7
x=1 (2)/(7)

Marlon asks a friend to think of a number from 5 to 11. What is the probability that Marlon’s friend will think of the number 9?

Answers

Answer:

P=(1)/(7)

Step-by-step explanation:

we know that

The probability of an event is the ratio of the size of the event space to the size of the sample space.

The size of the sample space is the total number of possible outcomes

The event space is the number of outcomes in the event you are interested in.

Let

x---------> size of the event space

y-------> size of the sample space

P=(x)/(y)

In this problem we have

x=1 (because is only one number to think)

y=7 (there are 7 numbers between 5 and 11)

substitute

P=(1)/(7)


There are 7 numbers between 5 and 11 including 5 and 11. This means there is a one in seven chance of any number. The probability of o 9 is 1/7.

What is -4 x 3 when 4 is negative??

Answers

-12

When multiplying a negative and a positive, the product is a negative.

Whenever you are confused, you can write the multiplication tic tac toe on the corner of your paper and it really helps! (it's in the photo below)

Just remember that the positives are put in a diagonal line.

Hope this helps!

Let me know if you need anything else :)

Answer:

-12

Step-by-step explanation:

-×-=+

so -×+=-

so -4×3=-12

6 8/9 times 36/31 .....

Answers

Answer:

8

Step-by-step explanation:

First, convert the mixed fraction to an improper one:

\displaystyle{6(8)/(9)=(62)/(9)}

Then, multiply:

\displaystyle{(62)/(9)*(36)/(31)}

Cross-reduce:

\displaystyle{(2)/(1)*(4)/(1)}

And simplify:

\displaystyle{(8)/(1)=8}

Can someone do this it's hard I need help

Answers

10. G (one box below G; one left of D)
11. F (one box below F)
12. F

13. E to F and A to B
14. C to D and E to F
no diagram 2.  sorry can't help with the rest :(

What is the answer to this question

Answers

Answer:

3

Step-by-step explanation:

It is 3 because you multiply the powers when in brackets

The answerrrrr is 3 (: