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3 years ago

Can someone help (8grade math)

Mathematics

1 answer:

Likurg_2 [28]3 years ago

4 0

Answer:

A. 3561 ft²

Step-by-step explanation:

πr² = the area of a circle

base · height = volume

9²π = 254.47

254.47 · 14 = 3561

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Four students found the mean of the data set 26, 31, 39, 30, 16, 16, 18, 38. which student found the correct mean? ashrita’s wor

balu736 [363]

In calculating the mean of this data set Ashrita did the best job.

The Mean of the data set is the most commonly used measures of central tendency.

It means the average value of the data set.

one doesn't have to arrange the data in order for finding it.

<h3>What is the meaning of mean?</h3>

The data set value takes is to add them all together and divide that by the number of the data.

It can be written as

$,(x_1 + x_2 + x_3 + ..... + x_n) / n$

Where $x_1 , x_2 , x_3 , ..... ,x_n$ are the values in the data set

Therefore we can conclude that Ashrita did the best job in calculating the mean of this data set.

To learn more about the mean visit:

brainly.com/question/968894

6 0

2 years ago

Please solve this question!!

GaryK [48]

Answer: (i) 1/221 (ii) 11/221 (iii) 95/663 (iv) 1/663

Step-by-step explanation:

(i) A deck of cards contains 4 Kings out of 52 total cards

1st draw: 4 Kings out of 52 total cards → 4/52 = 1/13

2nd draw: 3 remaining Kings out of 51 total remaining cards → 3/51 = 1/17

1st Draw 2nd Draw Outcome Probability

King: P(K) = 1/13 King: P(K₂/K₁) = 1/17 King, King (1/13) x (1/17) = 1/221

*************************************************************************************************

(ii) A deck of cards contains 4 Jacks, 4 Queens, & 4 Kings out of 52 total cards

1st draw: 12 Face cards out of 52 total cards → 12/52 = 3/13

2nd draw: 11 remaining Face cards out of 51 total remaining cards → 11/51

1st Draw 2nd Draw Outcome Probability

Face: P(F) = 3/13 Face: P(F₂/F₁) = 11/51 Face,Face (3/13) x (11/51) = 11/221

*************************************************************************************************

(iiI) A deck of cards contains 26 black cards out of 52 total cards but there are 2 black Jacks, 2 black Queens, and 2 black Kings.

1st draw: 20 Black (not Face) cards out of 52 total cards → 20/52 = 5/13

2nd draw: 19 remaining Black (not Face) cards out of 51 total remaining cards → 19/51

1st Draw 2nd Draw Outcome Probability

Black: P(B~) = 5/13 Black: P(B~₂/B~₁) = 19/51 B~,B~ (5/13) x (19/51) = 95/663

*************************************************************************************************

(ii) A deck of cards contains 4 Aces out of 52 total cards

1st draw: 4 Aces out of 52 total cards → 4/52 = 1/13

2nd draw: 1 Queen of Hearts out of 51 total remaining cards → 1/51

1st Draw 2nd Draw Outcome Probability

Ace: P(A) = 1/13 Qh: P(Qh₂/A₁) = 1/51 Ace,Queen(h) (1/13) x (1/51) = 1/663

7 0

3 years ago

a 24 ft ladder is leaning against a 20 ft building, what is the distance between the bottom of the ladder and the base of the bu

madreJ [45]

The distance at the base is 4 feet. Hope this helps.

4 0

3 years ago

Ryan spent $26.32 on 8 gallons of gas. How much would he spend for 20 gallons?

nalin [4]

$65.80

$26.32/8=$3.29 for a gallon
$3.29 x 20 = $65.80.

Hope this helps

4 0

3 years ago

Read 2 more answers

If a figure is a square then is it a regular quadrilateral true or false explain

miskamm [114]

I believe so. (TRUE). a square has all equal sides so if the figure is just alike, its a reg quad.

6 0

3 years ago