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3 years ago

PLEASE HELP....explain your answer, thank you so much! I will mark brainlyest!

Mathematics

2 answers:

sineoko [7]3 years ago

7 0

Answer:

Slope is y2-y1/x2-x1

Let’s make x1 and y1 (6,8)

Let’s make x2 and y2 (2,1)

1-8/2-6

-7/-4

Both are negative numbers, which cancel each other out, making the fraction a positive number.

7/4

A. Would be your answer

Hope I helped!

Tasya [4]3 years ago

6 0

Answer:

A. 7/4

Step-by-step explanation:

To find the slope when we have 2 points, we use the formula

m = (y2-y1)/(x2-x1)

where (x1,y1) and (x2,y2) are the given points

m = (1-8)/(2-6)

= -7/-4

=7/4

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The relation R is shown below as a list of ordered

Dmitrij [34]

Answer:

(1, 4) and (1,3), because they have the same x-value

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For a relation to be regarded as a function, there should be no two y-values assigned to an x-value. However, two different x-values can have the same y-values.

In the relation given in the equation, the ordered pairs (1,4) and (1,3), prevent the relation from being a function because, two y-values were assigned to the same x-value. x = 1, is having y = 4, and 3 respectively.

Therefore, the relation is not a function anymore if both ordered pairs are included.

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2 years ago

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natta225 [31]

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3 years ago

n=400 people under the age of 25 was asked whether they check social media sites right after they wake up. 42% check social medi

Aliun [14]

Answer:

Step-by-step explanation:

We would set up the hypothesis test.

For the null hypothesis,

p = 0.5

For the alternative hypothesis,

p < 0.5

Considering the population proportion, probability of success, p = 0.5

q = probability of failure = 1 - p

q = 1 - 0.5 = 0.5

Considering the sample,

P = 42/100 = 0.42

We would determine the test statistic which is the z score

z = (P - p)/√pq/n

n = 400

z = (0.42 - 0.5)/√(0.5 × 0.5)/400 = - 3.2

Recall, population proportion, p = 0.5

We want the area to the left of 0.5 since the alternative hypothesis is lesser than 0.5. Therefore, from the normal distribution table, the probability of getting a proportion < 0.5 is 0.00069

So p value = 0.00069

Since alpha, 0.05 > than the p value, 0.00069, then we would reject the null hypothesis.

Therefore, there is significant evidence to conclude that that less than 50% of people under the age of 25 check social media sites right after they wake up.

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2 years ago