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alexira [117]
3 years ago
15

How is the graph of y=2x^2+3 different from the graph of y=x^2-9x+20 shown below?

Mathematics
1 answer:
Pepsi [2]3 years ago
5 0

Answer:

○ The graph of y = -2x² + 3 opens downward and is shifted up.

Step-by-step explanation:

According to the Quadratic Equation, <em>y = Ax² + Bx + C</em>, <em>C</em><em> </em>acts<em> </em>like a y-intercept, and in this case, since both graphs shift up [because both are positive values], we do not pay attention to those. Now, we come over to our <em>A</em>, which makes a BIG difference because both graphs open in opposite directions [one negative, one positive]. With this being stated, we have our answer.

If you are ever in need of assistance, do not hesitate to let me know by subscribing to my You-Tube channel [USERNAME: MATHEMATICS WIZARD], and as always, I am joyous to assist anyone at any time.

** Extended information on Parabolas

Opens down → -A

Opens up → A

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Help ASAP!! No bots!!!
arlik [135]

Answer:

A, D, F

Hope it helps!

3 0
3 years ago
The length of a rectangle is one unit more than the width. if the area is 30 square units find the dimensions of the rectanhgle
solmaris [256]
Width = w

Length = w + 1

Area = 30

w(w+1) = 30

w² + w = 30

w² + w - 30 = 0

w² + 6w - 5w - 30 = 0

w(w + 6) -5(w + 6) = 0 

(w + 6)(w - 5) = 0

w = 5 or -6

Since the width cannot be negative, the width is 5 units.

Hence, the width is 5 units and the length is 6 units. 
6 0
3 years ago
1.5[3(14.5+7)-3]-7.4
nalin [4]

Answer:

84.85

Step-by-step explanation:

1.5[3(14.5+7)-3]-7.4

1.5[3*21.5-3]-7.4

1.5*61.5-7.4

=84.85

7 0
3 years ago
A sample of n = 5 scores has a mean of m = 8. one new score is added to the sample and the new mean is calculated to be m = 9. w
Yuri [45]
If the 5 scores have a mean of 8, then their total sum would be 8*5 = 40

Now if one score if added (let's call this score x), there are 6 scores and the mean changes to 9, thus:
(40 + x)/6 = 9
40 + x = 54
x = 14
6 0
3 years ago
Read 2 more answers
PLEASE HELP MEH!
goblinko [34]

Answer: x=72, y=26


Step-by-step explanation:

Since a line is 180°, we can do:

2x+10+y=180

2x+y=170

Since a triangle is 180° also, we can do:

x+y+82=180

x+y=98

If we subtract x+y=98 from 2x+y=170, we get:

2x+y=170

x+y=98

x=72

If we insert x=72 into x+y=98, we get:

72+y=98

y=26

We can check our answer by inserting x=72 and y=26 into x+y+82=180

72+26+82=180

98+82=180

180=180

7 0
3 years ago
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