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pashok25 [27]
2 years ago
10

Would mean a lot if someone helped me answer this questions correctly please!!!

Mathematics
1 answer:
Natasha2012 [34]2 years ago
4 0

Answer:

A: y = -5x + 8

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Suppose that a jewelry store tracked the amount of emeralds they sold each week to more accurately estimate how many emeralds to
Ratling [72]

Answer: point estimate = 3.88

Margin of error = 0.63

Step-by-step explanation:

Confidence interval is written in the form,

(Point estimate - margin of error, Point estimate + margin of error)

The sample mean, x is the point estimate for the population mean. Let m represent the margin of error. Since the confidence interval is given as (3.25 , 4.51), it means that

x - m = 3.25

x + m = 4.51

Adding both equations, it becomes

2x = 7.76

x = 7.76/2

x = 3.88

Substituting x = 3.88 into x + m = 4.51, it becomes

3.88 + m = 4.51

m = 4.51 - 3.88

m = 0.63

8 0
2 years ago
PLS HELP ONLY 1 question
Vesna [10]
The answer is C. Here you go.
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2 years ago
What are the intercepts of the line?
zmey [24]
X intercept: (-4)
y intercept: (8)
6 0
2 years ago
What is 5 3/4 -1 5/12= ?
allsm [11]

Answer:

4.33333333333 or 4 and 1/3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the vertex of a parabola having the equation y = –2(x – 5)2 + 7? Which direction does the parabola open?
Vika [28.1K]

y = -2(x-5)^2 + 7

That's vertex form for a parabola y=a(x-p)^2+q and we read off vertex (p,q) as

Answer: Vertex (5,7)

The negative <em>a</em> tells us this is a downward opening parabola (upside down from the usual y=x^2. I remember CUP - Concave Up Positive; here <em>a </em>is negative so not a cup, instead concave <em>down.</em> The same rule applies to second derivatives in calculus so memorize it now and use it later.

Answer: downward

7 0
3 years ago
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