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3 years ago

15

Find the mean of the data set. if necessary, round to the nearest tenth. 18 14 8 22 25 8

1 answer:

Elden [556K]3 years ago

6 0

To work out the mean of a data set add all the numbers together and divide them by the number of data items there are.

18 + 14 + 8 + 22 + 25 + 8 = 95

95/6 = 15.8 (that answer is rounded)

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NEED HELP SHOW WORK WILL GIVE BRAINLYEST

hodyreva [135]

It would be 14 for the perimeter

6 0

2 years ago

Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation h = ?16t + 160t + 12

insens350 [35]

Answer:

The time taken for the flare to hit the ground is approximately 10.7 seconds.

Step-by-step explanation:

Given : Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation $h =- 16t^2+ 160t + 120$ models the h height at t seconds of the flare.

To find : How long will it take for the flare to hit the ground?

Solution :

The equation $h =- 16t^2+ 160t + 120$ models the h height at t seconds of the flare.

The flare to hit the ground when h=0.

Substitute in the equation,

$-16t^2+ 160t + 120=0$

Applying quadratic formula, $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Where, a=-16, b=160 and c=120

$x=\frac{-160\pm\sqrt{160^2-4(-16)(120)}}{2(-16)}$

$x=\frac{-160\pm\sqrt{33280}}{-32}$

$x=\frac{-160\pm 182.42}{-32}$

$x=\frac{-160+182.42}{-32},\frac{-160-182.42}{-32}$

$x=−0.70,10.70$

Reject the negative value.

Therefore, the time taken for the flare to hit the ground is approximately 10.7 seconds.

4 0

3 years ago

Hakeem shot the basketball 28 times and made 17 baskets. What percent of his shots were baskets?

Anastaziya [24]

Answer:

60%

Step-by-step explanation:

6 0

3 years ago

X + 15 = 28<br> O A. x= 13<br> O B. x = 33<br> O C. x = 43<br> O D. x = 23

Mariana [72]

Answer:

A

Step-by-step explanation:

the answer is

x+15=28

x=28-15

x= 13

7 0

3 years ago

Read 2 more answers

Last week, Peter ran 3 1/5 laps around the lake. Isaac ran 1 1/4 times as many laps around the lake as Peter did. How many laps

vlabodo [156]

Answer:

4 laps

Step-by-step explanation:

$3 \frac{1}{5} * 1 \frac{1}{4} =$

$\frac{16}{5} * \frac{5}{4} = \frac{80}{20} =4$

Isaac ran 4 laps.

4 0

4 years ago