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Phoenix [80]
4 years ago
7

PLEASE HELP!!!

Mathematics
2 answers:
Svetllana [295]4 years ago
7 0
Vertex form is
y = a {(x - h)}^{2}  + k
where (h,k) is the vertex.
We can see that the vertex of the graph is at (2,0), and that the graph opens downwards, but does not look stretched at all.
Therefore,
a = -1
h = 2
k = 0
and our vertex form equation is
y =  -  {(x - 2)}^{2}  + 0
which is answer A
sladkih [1.3K]4 years ago
4 0
<span>A. y= -(x-2)^2 its this one

</span>
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A recent Algebra 2 quiz had scores that closely followed a normal distribution with a
Nina [5.8K]

Answer: Your question is poorly written, the Normal Curve is missing attached is a free sketch of normal distribution curve

answer : attached below

Step-by-step explanation:

Given data :

Mean = 80

standard deviation = 10

for a Normal distribution curve to the right of the mean value is ; +10SD , +20SD, +30SD........ +250D while to the left is  -10SD , -20SD, -30SD....... -350D

3 0
3 years ago
Two positive numbers have a difference of 21. The larger number is five more than twice the smaller. Find the two numbers.
tatuchka [14]
Let n = the smaller of the two numbers, and since the other number is 5 more than twice the smaller number n, then ...

Let 2n + 5 = the second and larger number.

Since the sum of the two unknown numbers is 26, then we can write the following equation to be solved for n as follows:
n + (2n + 5) = 26

n + 2n + 5 = 26

Collecting like-terms on the left, we get:
3n + 5 = 26

3n + 5 - 5 = 26 - 5

3n + 0 = 21

3n = 21

(3n)/3 = 21/3

(3/3)n = 21/3

(1)n = 7

n = 7

Therefore, ...
2n + 5 = 2(7) + 5
= 14 + 5
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CHECK:
n + (2n + 5) = 26
7 + (19) = 26
7 + 19 = 26
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Therefore, the two desired numbers whose sum is 26 are indeed 7 and 19.

Hope this helps :)
6 0
3 years ago
Does anyone know an easy way to remember how to factor polynomials?
kari74 [83]

Answer:

FOIL

Step-by-step explanation:

F-first

O-outer

I-inner

L-last

6 0
4 years ago
the area of a trapezoid is 36 square inches. The height is 4 inches and one bases twice the length of the other base. What are t
vlada-n [284]
The formula for this is A= \frac{1}{2} ( b_{1} + b_{2} )h.  Filling in accordingly, 36= \frac{1}{2}(x+2x)(4).  This simplifies to 36= \frac{1}{2}(3x)(4) and 36=6x.  Therefore, x = 6 so the bases are 6 and 12.
8 0
3 years ago
Read 2 more answers
Please help with these math questions (Please don't answer if you don't know all of them)
wolverine [178]
This is the whole answer 8.71789788708 roumd to the neareat thenth is 8.71 should be the answer
7 0
4 years ago
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