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Hatshy [7]
3 years ago
15

Which of these numbers is the same as 4-2? A. -8 B. 1 C. lo D. 16

Mathematics
1 answer:
Nostrana [21]3 years ago
3 0

Answer:  A

Step-by-step explanation:

<h2>4 x -2 = -8</h2>
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A square rug has an area 80ft which is the best approximation of the length of one side of the rug.....Explain...If you can show
kow [346]
So to find the answer, first we need to understand how to approximate square roots. 80 is an imperfect square, so we're going to have to round the answer. To find that, we need to find the multiples 80.

72, 80, 81.
8, x, 9

So the distance apart between 72 and 81 is 9. The answer, x, is obviously between 8 and 9, and since the distance between these to is 9, your answer is going to be 8.9 .
5 0
3 years ago
A group of 625 students has a mean age of 15.8 years with a standard deviation of 0.6 years. The ages are normally distributed.
Tom [10]
16.2-15.8/0.6=0.6667. Use normalcdf() to find the percentage from -999 to 0.6777 which is 0.7476*625=467
7 0
3 years ago
Which equation represents a line with an undefined slope? y = x y = –x y = 0 x = 0
malfutka [58]

Answer:

x=0

Step-by-step explanation: If x=0, then two points on the graph can be (0, 6) and (0,0). using those two points, you can say the slope is 6/0, which is undefined

7 0
3 years ago
Read 2 more answers
Which of the points listed below is not on the line with equation 7y+2=3x-5
kicyunya [14]

Answer: Second option.

Step-by-step explanation:

Given the folllowing Linear Equation:

7y+2=3x-5

You need to substitute the coordinates of each point given in the options into the equation and then evaluate.

1) Substituting  (2, -\frac{1}{7}) into the equation, you get:

7(-\frac{1}{7})+2=3(2)-5\\\\-1+2=6-5\\\\1=1\ (TRUE)

2) Substituting the point (3, -\frac{3}{7}). you get:

7(-\frac{3}{7})+2=3(3)-5\\\\-3+2=9-5\\\\-1=4\ (FALSE)

3) Apply the same procedure using the point (1, -\frac{4}{7}):

 7(-\frac{4}{7})+2=3(1)-5\\\\-4+2=3-5\\\\-2=-2\ (TRUE)

4)  Apply the same procedure using the point (-1, -\frac{10}{7})

 7(-\frac{10}{7})+2=3(-1)-5\\\\-10+2=-3-5\\\\-8=-8\ (TRUE)

5) Substituting  (0,-1) into the equation:

 7(-1)+2=3(0)-5\\\\-7+2=-0-5\\\\-5=-5\ (TRUE)

Therefore, the point (3, -\frac{3}{7})  is not on the given line.

8 0
3 years ago
Whats the absolute value of -8 and 8
Alla [95]

Answer:

16

Step-by-step explanation:

-8--------------------------0---------------------------8

imagine this is a straight line where you can measure the distances.

to get from -8 to 0 we have a distance of 8 units.

so, knowing this, now from 0 to 8 we have another distance of 8 units.

8+8=16

Distance is the absolute value, meaning that it'll always be positive.

4 0
2 years ago
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