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loris [4]
2 years ago
13

There are 32 students at a pizza party. Each student ate

Mathematics
2 answers:
Temka [501]2 years ago
8 0

Answer:

8 Whole pizza's.

Step-by-step explanation:

32/x=1/4

x= 32/4

x=8

Inessa [10]2 years ago
5 0

Answer:

8 pizzas

Step-by-step explanation:

every 4 students ate a pizza

so 32/4 = 8

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Social media is popular around the world. Statista provides estimate of the number of social media users in various countries in
amm1812

Answer:

Kindly check explanation

Step-by-step explanation:

The data table :

Use of SM _UK _China _ Russia _US _ col total

Yes ______480 __215 ___343 __640 _ 1678

No _______320 _ 285 ___357__ 360 _ 1322

Row Total__ 800 _500 __ 700_ 1000_ 3000

H0 : p1 = p2 = p3 = p4

H1 : p1 ≠ p2 ≠ p3 ≠ p4

Test statistic :

χ² = Σ(observed - Expected)² / Expected

Expected value of each cell = (Row total * column total) / N

N = grand total

Expected Values:

447.467 _279.667 _ 391.533 _ 559.333

352.533 _ 220.333 _ 308.467 _ 440.667

χ²=(2.36536+14.9527+6.01605+11.6337+3.00232 18.9793+7.63611+14.7665) = 79.352

Degree of freedom, df = (row-1)*(column-1) = (2 - 1) * (4 - 1) = 1 * 3 = 3

Using the Pvalue from Chisquare calculator :

Pvalue(79.352, 3) = 0.00000000001

Decision region :

Reject H0 ; If Pvalue < α

α = 0.05

Since 0.000000001 < 0.05 ; Reject H0 and conclude that not all population proportion are equal.

Sample proportion :

Phat = number of yes, x / total

For UK, Phat = 480/800 = 0.6

For China , Phat = 215/500 = 0.43

For Russia , Phat = 343/700 = 0.49

For US, Phat = 640/1000 = 0.64

7 0
3 years ago
I have way more questions than this answer them if you want pleaseee!!
aliina [53]

The right answer is Option C.

Step-by-step explanation:

Given inequality is

6(2x-1)  > 24

Solving the inequality

6*2x-1*6>24\\12x-6>24

Adding 6 on both sides

12x-6+6>24+6\\12x>30

Dividing both sides by 12

\frac{12x}{12}>\frac{30}{12}\\x>\frac{5}{2}

Therefore,

x>\frac{5}{2}

The right answer is Option C.

Keywords: inequality, division

Learn more about division at:

  • brainly.com/question/106975
  • brainly.com/question/107042

#LearnwithBrainly

5 0
3 years ago
This is a hard one for me. Can someone solve this one.
asambeis [7]

Answer:

100

Step-by-step explanation:

3 0
3 years ago
Mimi recorded a soccer game that lasted 1
lyudmila [28]

9514 1404 393

Answer:

  7 hours

Step-by-step explanation:

4 × (1 3/4) = 4×1 + 4×3/4 = 4 + 3 = 7

Mimi spent 7 hours watching the game.

7 0
3 years ago
A hose fills a hot tub at a rate of 4.26 gallons per minute. How many hours will it take to fill a 265-gallon hot tub?
Studentka2010 [4]

Answer: Divide the volume of the bath tub by the rate at which the hose folks the bath tub

 

Time = 251/ 4.86

 

= 51.64 hours

Step-by-step explanation:

7 0
2 years ago
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