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3 years ago

Slope of -7 and y -intercept of 1

Mathematics

1 answer:

marysya [2.9K]3 years ago

7 0

The graph of y = 1 is a horizontal line at the value y = 1. The slope of a horizontal line is m = 0.

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Exponential form please write

drek231 [11]

Answer:

1/128

Step-by-step explanation:

6 0

3 years ago

Twice a number increased by 12 is equal to 31 less than three times the number

Degger [83]

The answer is 43. you set the variable x equal to the words given in the equation. then you get the x terms on the same side and everything else on the other side and solve

7 0

3 years ago

Read 2 more answers

the following data represent the number of people aged 25-64 years covered by health insurance (private or government) in 2018.

astraxan [27]

Answer:

mean = find the total of people in such data by adding up all the totals of people represented by each age then divide that total by 2.

mean = with cumulative or frequency graphs if the numbers range individually like 25-30 and 30-35 etc and so on then you take the midpoint age and multiply it by the frequency number in new column add up both columns then divide by smaller total.

mean = histogram total number of data ie) from 270 people (80 x 0 = 0), (40 x 2 = 0) and so on multiplying the frequency. then add them all up in new column ie) 380 among 270 people = 1.4

mode = histogram highest box

median = histogram add up all data number divided by 2 and can draw this on graph as they sort of are in order ie) 15 to the left and 15 to the right

To find standard deviation you need the copulative formula and the notation change for sample shows the small m and s to represent standard deviation ie) m-n is a notation difference for samples of population's

n = number of scores ie) = 50

Ex = then sum of x = would be the collective total ie) = 270

m = 270/50 = 5.4

Ex^2 = 270 x 270 = 72900 (the square of the total population)

SS = Sum of squares = 72,900 - ( 270^2 / 50) are all the variables.

is the formula = 71,442

the root of SS -1

S^2 = 270 / (50 -1) = 270/49 = 5.51

S = sqrt S^2 = sqrt SS /n-1 = sq rt 50 = and you get your answer here.

Standard Deviation on data example here shown is;

S = sqrt 5.51 = sqrt 71442 / n-1 = sq rt 71442/ 50-1 = sq rt 71442/49 = 38.1837662 from a 270 population that exists with 50 age group 25 -75 to show the ease here and how to remember.

Just retrace and where 270 is change for total

Where 50 is put 64-25 = 39

and where n-1 is put 39-1 and always subtract first before dividing as the formula protects the brackets as seen in bold.

As your very last formula is S = SS/n-1

Step-by-step explanation:

5 0

3 years ago

Which of the following expressions are equivalent to - -8/-4

Ivenika [448]

The following expressions equivalent to c. None of the above

3 0

3 years ago

Please help Math-correct answers only!!<br><br>Have number with correct answers/letters!

zheka24 [161]

I'll do the first three questions to get you started.

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Question 1

x = horizontal component of the triangle

cos(angle) = adjacent/hypotenuse

cos(theta) = horizontal/hypotenuse

cos(40) = x/30

x = 30*cos(40)

x = 22.98133329 approximately

This is the horizontal force applies to the suitcase.

Work = force*displacement

Work = 22.98133329*120

Work = 2,757.7599948

Work = 2,758

<h3>Answer: 2,758 Nm (choice B)</h3>

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Question 2

Add the drone's relative air velocity and the wind velocity vectors.

v+w = (13i + 3j) + (-7i - 2j)

v+w = (13i-7i) + (3j-2j)

v+w = 6i + j

<h3>Answer: 6i + j (choice B)</h3>

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Question 3

Check out the diagram below. Focus on the smaller triangle. Notice the placement of angle theta.

sin(theta) = opposite/hypotenuse

sin(40) = x/200

x = 200*sin(40)

x = 128.557521937308

x = 128.558

<h3>Answer: 128.558 pounds (choice A)</h3>

8 0

2 years ago