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Liula [17]
3 years ago
13

Which can be the first step in finding the equation of the line that passes through the points (5, negative 4) and (negative 1,

8) in slope-intercept form?

Mathematics
2 answers:
MrMuchimi3 years ago
8 0

Answer:

The equation of the line is y = -2x + 6

Step-by-step explanation:

The first step in finding the equation of the line is plotting the points. The next step is to go up 12 units from the bottom point to reach the second point. Then, go left 6 units to find the difference in x-values. Finally, use the slope to connect the points with a line.

I graphed the points and the line on the graph below.

Westkost [7]3 years ago
3 0

Answer:

Below.

Step-by-step explanation:

I can't see a list of first steps but it should be finding the slope of the line:

The slope = rise / run

= (-8 - (-4) / (1 - 5) = -4/-4 = 1.

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Steve wants to know what the average ACT scores of students graduated from his high school is. He randomly selected 25 students
beks73 [17]

Answer:

[a]. sample is 25 randomly selected students

    also population is all students

[b]. (20.0, 23.0)

[c]. (8.8, 24.2)

Step-by-step explanation:

here is a step by step process to solving this, i hope you find this helpful.

1). The population is all students who graduated from his school  while the

sample is 25 randomly selected students from the email list

2). given alpha = 1-0.86=0.14

critical z value(two tailed) for 86% confidence level is:

z=normsinv(0.07) or normsinv(0.93)=1.476

Margin of error=1.476*(4.6/SQRT(20))=1.5

86% confidence interval for population mean

=21.5+/-1.5

=(20.0, 23.0)

3). if population standard deviation is not known,we will use t distribution.

df=20-1=19

t*=tinv(0.05,19)=2.093

Margin of error=2.093*(5.7/sqrt(20))=2.7

95% confidence interval for population mean

=21.5+/-2.7

=(18.8, 24.2)

cheers i hope this helps!!!!

3 0
3 years ago
Given line segment AB, the coordinates of A are (3,-5) and the coordinates midpoint are (5,-1), what are the coordinates for B?
dsp73

Answer:

<h3>           B(7, 3)</h3>

Step-by-step explanation:

Point P(5, -1) being the midpoint of AB means that  x_P-x_A=x_B-x_P

5-3=x_B-5\\\\2+5=x_B\\\\x_B=7

and   y_P-y_A=y_B-y_P

-1-(-5)=y_B-(-1)\\\\-1+5=y_B+1\\\\y_B=3

6 0
3 years ago
Jackie followed these steps to evalute the expression
sweet [91]

??? what steps are you talking about. lol

6 0
3 years ago
PLEASEE HELP!! NUMBER 4!!
Illusion [34]
?????????????????????/ us a calculator to add up all the nub.
8 0
3 years ago
Equivalent expressions of z+(z+6)
Gennadij [26K]

Answer:

2z+6 or 2(z+3) are the equivalent expressions

Step-by-step explanation:

z+(z+6)

opening the brackets

z+z+6

=2z+6

or if we take 2 as common the answer is

=2(z+3)

i hope this will help you :)

3 0
3 years ago
Read 2 more answers
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