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emmasim [6.3K]
3 years ago
5

How many numbers are written from n to k, including n and k?

Mathematics
1 answer:
Rainbow [258]3 years ago
7 0

Answer:

k-n+1

Step-by-step explanation:

How many numbers are written from n to k

Lets look at a smaller example with real number

Lets go from 3 to 8

3 4 5 6 7 8

There are 6 numbers

We take 8 -3 = 5,  but we include the number 3 so we add it back in +1

5+1 =6

Lets look at a larger example

2 to 11

2,3,4,5,6,7,8,9,10,11

There are 10 numbers

11-2 =9  but we have to add back in the first number

9+1 =10

Now we are going from n to k

k-n = k-n, but we have to add back in the first number

k-n+1

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Answer:

Step-by-step explanation:

7) The formula for determining the area of a parallelogram is expressed as

Area = base × height.

Length of base = Area/height

Therefore,

Length of base = 7/2 = 3.5 feet

8) The formula for determining the area of a trapezoid is expressed as

Area = 1/2(a + b)h

Where

a and b are the length of the bases

h is the height. Therefore

21 = 1/2(2 + 4)h

21 = 3h

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9) Area = base × height.

Height = Area/Length of base

Height = 28/14 = 2 inches

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7 0
2 years ago
On the scale drawing of Cold Lake Camp, the mess hall is 5 cm from the lodge. The scale for the map is 2 cm = 100 m.
romanna [79]

Answer:

The answer is 250 meters from the lodge

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2 years ago
F(x)=3x^2+5
Westkost [7]

Answer:

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7 0
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Simplify the expression. –(10)–2<br><br><br> 100<br><br> –100
miss Akunina [59]

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pantera1 [17]
The z score for a confidence level of 99% is 2.575.. You need to know this to complete this type of problem.. the other two commonly used confidence levels are 90% and 95% having z scores of 1.645 and 1.96 respectively. You need to memorize this!

To find the confidence interval, it will be defined as the sample mean plus/minus the margin of error.. Now to find the margin of error, divide the standard deviation of 12 by the square root of the number of elements in your sample(√250). Then take that result and multiply it by the Z score I mentioned above for a 99% confidence level.


In this case: the sample mean is 70 and the margin of error is approximately 1.95

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Looks like that would be the last choice. hope this helps.. it's been awhile since my work with statistics :-)
4 0
3 years ago
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