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JulsSmile [24]
3 years ago
6

The three shoppers spent 204$ in all . How much did each girl spend?

Mathematics
1 answer:
aleksley [76]3 years ago
4 0
We would divide $204 by 3 to find out how much did each shopper spent. $204/3 is $68. So, each shopper spent $68. Hope this helped!
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A random sample of 25 roundtrip flights between Philadelphia and Dallas has an average airfare of $393.50 with a sample standard
Sauron [17]

Answer:

$393.50+/-$19.72

= ( $373.78, $413.22)

Therefore, the 95% confidence interval (a,b) = ($373.78, $413.22)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = $393.50

Standard deviation r = $50.30

Number of samples n = 25

Confidence interval = 95%

z value(at 95% confidence) = 1.96

Substituting the values we have;

$393.50+/-1.96($50.30/√25)

$393.50+/-1.96($10.06)

$393.50+/-$19.7176

$393.50+/-$19.72

= ( $373.78, $413.22)

Therefore, the 95% confidence interval (a,b) = ($373.78, $413.22)

5 0
3 years ago
The height of a ball above the ground as a function of time is given by the function h(t)=−32t2+8t+3 where h is the height of th
gavmur [86]

Answer:

0.125 seconds.

Step-by-step explanation:

We have been given that the height of a ball above the ground as a function of time is given by the function h(t)=-32t^2+8t+3, where h is the height of the ball in feet and t is the time in seconds.

We can see that our given equation is a downward opening parabola as its leading coefficient is negative. The maximum point will be vertex of parabola.

To find the time, when the ball would be at its maximum height, we need to find the x-coordinate of vertex.

Using formula \frac{-b}{2a}, we will find the x-coordinate of vertex of parabola as:

\frac{-b}{2a}

\frac{-8}{2*-32}

\frac{-8}{-64}

\frac{1}{8}

0.125

Therefore, the ball will be at a maximum height after 0.125 seconds.

6 0
3 years ago
Round 7905.68466806 to the nearest thousand.
mixas84 [53]

Answer:

8000 to the nearest thousand

7905.685 to the thousandth

Step-by-step explanation:

8 0
3 years ago
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Alex_Xolod [135]
Just add all the numbers together, the divide by the amount of numbers
8 0
3 years ago
Help ME! solve for ∠K.
Ainat [17]

Answer:

45

Step-by-step explanation:

Every Triangle has 180 degrees.

x + 8x + 3x = 180

12x = 180

x = 180/12

x = 15

Angle K = 3x

K = 3 * 15

K = 45

3 0
2 years ago
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