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Temka [501]
3 years ago
6

The points scored on a test for a sample of

Mathematics
1 answer:
jasenka [17]3 years ago
5 0

Answer:

The mean is 42.6

Step-by-step explanation:

6+90+16+80+15 + 70 + 4 + 60 = 341 \\ there \: are \: 8 \: numbers \: in \: total \: so \: you \: divide \: the \: sum \\ by \: 8. \\ 341 \div 8 = 42.625  \\ mean≈42.6

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What is the slope of a line that goes through the points 1,-5 and -3,2? I'm helping my niece
a_sh-v [17]
M = (y2 - y1)/(x2-x1)
 = 2+5/-3-1
 = 7/-4
 = -7/4
4 0
3 years ago
What percent of 126 is 22?
LenaWriter [7]
17.46% of 126 is 22

Divide 22 by 126:
22 \div 126 = 0.1746

Change the decimal into a percentage by multiplying the decimal by 100:
0.1746 \times 100 = 17.46
6 0
3 years ago
Read 2 more answers
Find the equation of the line that is perpendicular to y = 1/4x – 2 and passes though the point (5, –2). A) y = –1/4x + 18 B) y
Mashcka [7]

Since our line is perpendicular to this line, the slope of

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Remember, negative reciprocal is just a fancy way

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So the slope of our line is -4/1 and we use this slope along

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Start with the point-slope formula.

Y - y1 = m(x - x1).

~Substitute

Y - -2 = -4/1(x - 5).

Minus a negative is plus a positive.

Y + 2 = -4/1x + 20.

Subtract 2 from both sides.

Y = -4/1x + 18

So, our answer is C.

7 0
3 years ago
Can a linear function be continuous but not have a domain and range of all real numbers
vovangra [49]
Yes. As long as it is linear, it will be continuous no matter the numbers. Now, I have no idea what a "real" number is, but I hope this helped. 
5 0
3 years ago
Write the equation of the line given the slope and the y-intercept. Type your answer in the box without skipping any spaces. m =
Over [174]

The equation of a line given the slope and y-intercept is given as;

             m(x-x₁) = (y-y₁)

∴equation of line with m = 2 and y-intercept = (0,3) =

     2(x - 0) = (y - 3)

 = 2x - 0 = y - 3

  making y the subject obtains y = 2x + 3.

so, equation of the line: y = 2x + 3.

 

  

7 0
3 years ago
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