3 years ago

Plz look at the picture and help me

Mathematics

1 answer:

stira [4]3 years ago

5 0

The other endpoint could be (8,-3)
which is 8 units to the right of (5,-3)

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A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit

sergiy2304 [10]

Answer:

95% Confidence interval: (39.43, 61.58)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = $50.50

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation = 20

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.1447$

$=50.50 \pm 2.1447(\dfrac{20}{\sqrt{15}} ) \\\\= 50.50 \pm 11.0751 \\= (39.4249,61.5751)\\\approx (39.43, 61.58)$

95% Confidence interval: (39.43, 61.58)

8 0

3 years ago

Please help me solve this problem! When does the ball hit the ground???

alisha [4.7K]

Step-by-step explanation:

after 5 seconds

it is the answer

6 0

3 years ago

A soccer team has 18 players. 5 of the players have scored at least 4 goals this season. Approximately what percent of the playe

liberstina [14]

Answer:30%

Step-by-step explanation:you divide 18 by 100 and then multiply that by 30 and it gives you 5.4 which is close to 5 players. So 30% is the answer

3 0

4 years ago

Vertical angle of isoceles triangle is 50° while it's base angles are together 2x .find x

Ghella [55]

Answer:

The sum of all the angles of an isoceles triangle is 180°

So it's 50° + 2x° = 180°

50 + 2x = 180

2x = 180 - 50

2x = 130

x = 130/2

x = 65

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3 years ago

Simplify the following expressions using distributive property of multiplication 4(3x-1)

d1i1m1o1n [39]

Answer:

multiplication 4(3x-1)

12x-4

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3 years ago