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oee [108]
3 years ago
5

1. What's one way we can check our answer to 2 x10 = 20?

Mathematics
1 answer:
allsm [11]3 years ago
4 0
The answer is b
.....
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Last year, the numbers of skateboards produced per day at a certain factory were normally distributed with a mean of 20,500 skat
alisha [4.7K]

Answer:

This can be solved by using the empirical rule for a normal distribution.

Step-by-step explanation:

A. The number of skateboards given is one standard deviation above the mean. Approximately 68% of the data points lie within the range plus and minus one standard deviation of the mean. Therefore the required percentage is:

68 + 16 = 84%.

B. The given number of skateboards is two standard deviations above the mean. Approximately 95% of the data points lie within the range plus and minus two standard deviations of the mean. Therefore the required percentage is:

5/2 = 2.5%

C.The given number of skateboards is one standard deviations below the mean. Therefore the required percentage is:

16%.

8 0
3 years ago
Simplify. Please help ASAP. I’m in a hurry.
Hoochie [10]
5 * 2 = 10
3^10/3^-2, same base, add
10 - 2 = 8
Solution: 10^8
7 0
2 years ago
-4x + 3y = -19<br> -4x - y = -15
Stells [14]

Answer:

x=

−3

4

y+

−19

4

Step-by-step explanation:

8 0
3 years ago
How many number are a units away from 0, if a&gt;0?
NikAS [45]

The number of numbers which are a units away from 0 if a>0 is; 2 numbers.

<h3>Distance between numbers on the number line</h3>

by convention, the distance between two numbers on the number line is usually a positive number.

On this note, since the required numbers are a units away from zero, it follows that;

  • |a - 0| = a units

OR

  • |0 - a| = a units.

On this note, only 2 numbers are a units away from zero according to the given condition.

Read more on number line;

brainly.com/question/17555743

6 0
2 years ago
Find the equation of a circle with a point at ( 10 , - 4 ) and a point at ( -2 , - 4 )​
astra-53 [7]

Answer:

Solution given:

letA=(10,-4)

B=(-2,-4)

centre[C](h,k)=\frac{10-2}{2},\frac{-4-4}{2}=(+4,-4)

radius=\sqrt{(4-10)²+(-4+4)²}=6units

we have

Equation of a circle is;

(x-h)²+(y-k)²=r²

(x-4)²+(y+4)²=36

or.

x²-8x+16+y²+8y+16=36

x²-8x+8y+y²=36-32

x²-8x+8y+y²=4

<u>T</u><u>h</u><u>e</u><u> </u><u>e</u><u>q</u><u>u</u><u>a</u><u>t</u><u>i</u><u>o</u><u>n</u><u> </u><u>i</u><u>s</u><u> </u><u>(x-4)²+(y+4)²=36</u><u> </u><u>o</u><u>r</u><u> </u><u>x²-8x+8y+y²=4</u><u>.</u>

8 0
2 years ago
Read 2 more answers
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