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Dovator [93]
3 years ago
9

The following work represents an attempt to find the equation of the parabola which has a vertex of (0, 0) and passes through th

e point (1, 3). Is the work correct? If not, what is the error?
y=a(x-h)^2+k
0=a(0-1)^2+3
-3=a


y=a(x-h)2+k
y=-3(x)^2
y=-3x^2





A.
The equation is correct.
B.
a = –3 should have been a = 9.
C.
0=a(0-1)^2+3 should have been 3=a(1-0)^2+0
D.
-3x^2 should have been 23x^2 + 3.x
Mathematics
2 answers:
Anastaziya [24]3 years ago
7 0
The answer to your problem is b
larisa [96]3 years ago
3 0
The answer is (C) 0=a(0-1)^2+3 should have been3=a(1-0)^2=0

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4 0
3 years ago
Stella bought 14 purses for $50. The next day she bought 2 more for a total of $38. What was the mean cost per purse?
denpristay [2]

Answer:

$48.5

Step-by-step explanation:

Given data

Number of purses= 14+2= 16

Cost of 14 purses= $50

Cost of 2 purses= $38

Let us use the weighted cost method

Mean cost = (14*50+ 2*38)/16

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8 0
3 years ago
What equation could generate the curve in the graph below
Marianna [84]

Answer:

A

Step-by-step explanation:

We know the y intercept is positive so that eliminates choice D.

y = 3x^2 -2x+1

This does not intercept the x axis

y = 3x^2 -6x+3

= 3(x^2 -2x+1)

3(x-1)^2

This intercepts the x axis at 1

This is not the equation for the graph

y = 3x^2 -7x+1

Let x = 1

y = 3-7+1

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5 0
3 years ago
2. The troupe’s account balance first reached $500 on Day 4. The last day the account balance was $500 was Day 8.
timofeeve [1]

Answer:

2. c is the answer hope it helps ^_^

3 0
2 years ago
Consider today’s stock listing for Enam Telecom, shown below. 52 wk High 52 wk Low Symbol Div. Close Net Change 122.86 64.77 ENM
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Answer:

Average change per day is 0.72

Step-by-step explanation:

As per stock listing given in the listing for Enam Telecom is

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52 wk low = 64.77

Div. = 3.45

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Net change = 4.74

Now it is given that lowest price which was 64.77 occurred 48 days ago.

Since yesterday closing price was 99.14 therefore net change in value will be = 99.14 - 64.77 = 34.37

This change is in 48 days so average change per day will be = Total change /number of days = 34.37/48 = 0.716 = 0.72

Answer is average change per day is 0.72

8 0
3 years ago
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