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lyudmila [28]
3 years ago
11

Please help me please!

Mathematics
1 answer:
monitta3 years ago
8 0

Answer:

C. \frac{5 - 2}{3 - 9}

Step-by-step explanation:

equation to find slope: \frac{y1 - y2}{x1 - x2}

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HELP MEEEEE EASY DUE IN A MINSS<br> What is the prime factorization of 990?
alex41 [277]

Answer:

11 is one of the factors! The orange divisor(s) above are the prime factors of the number 990. If we put all of it together we have the factors 2 x 3 x 3 x 5 x 11 = 990.

Step-by-step explanation:

3 0
2 years ago
I need help please who ever do this one question there are a real one :(
Phoenix [80]

Answer:

i think it is B hope it help

Step-by-step explanation:

3 0
2 years ago
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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
-3/7 plus (-3/4) reduce to simplest form
alina1380 [7]
Exact form
-3/2

Decimal form
-1.5

Mixed number form
-1 1/2
4 0
3 years ago
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What is the range of the function graphed below?
lorasvet [3.4K]

Answer:

( -  \infty  ,- 3]

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