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Advocard [28]
3 years ago
13

Find three consecutive integers whose sum is 558

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
8 0
Those are 185, 186 and 187

What you do is create this system of equations:

x+y+z=558  (three integers add up to 558)
x+1=y  (they are consecutive, so that is translated as a number+1)
y+1=z (same logic as before)

And then you just resolve that system.
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The highway mileages of 147 cars are in a file named CARS2.† These cars are 2003 models. Find the mean, standard deviation, and
grigory [225]

In statistics, mean is the average in a set of data collected. To calculate the mean, you have to add up all the numbers in the table and divide it by the number of data that exists. For example, if the data set is 2 4 1 5 2 8, the mean will be:

mean = \frac{(2+4+1+5+2+8)}{6}= 3.6

So, for this data set, the mean is 3.6.

The median is also a average number, however, the median is the middle value in the list. For example, with the data set above, the median is 3, because, as the set has an even number of data, the middle term would be the mean of the two middle number, in other words:

median = \frac{1+5}{2} = 3

The standard deviation (σ) is the spread of data distribution, which means it's how "far" a number is from the mean of the set. The formula is

σ = √∑ (x - μ)²/N, where ∑ is the total sum; μ is the mean; and N is the number of data points in the sample. So, to calculate the standard deviation, using the example:

1) Calculate the mean of the set: μ=3.6

2) Find the difference between each data point and the mean and then, the square of each one:

(2-3.6)² = 2.56;

(4-3.6)² = 0.16

(1-3.6)² = 6.76

(5-3.6)² = 1.96

(2-3.6)² = 2.56

(8-3.6)² = 19.36

3) Add up all the squares: ∑= 33.36

4) Divide by the number of data points: \frac{33.36}{6}=5.56

5) Take the square root: σ = 2.36

For the set of numbers above (2,4,1,5,2,8), the standard deviation is

σ = 2.36.

6 0
3 years ago
If you have a chance to win $500 for drawing a card of 10 of any suit from a standard deck of cards, what is the value of expect
Dimas [21]
The expected value is $38.46.

The probability of drawing a 10 from any suit is 4/52.  Multiply this by the earnings, 500:

4/52(500) = 2000/52 = 38.46
6 0
3 years ago
Y=-x+3 y = -2.x +7 = 5.​
lyudmila [28]

Answer:

Slope: 3/5

y-intercept: 7

Step-by-step explanation:

5 0
3 years ago
A bottle holds 1 litre of lemonade. Rachel fills 5 glasses with lemonade.She puts 150 millilitres in each glass.Pls explain your
mina [271]
These 5 bottles with lemonade which contains 150 millilitres in each bottle so it would be 150 x 5 to find how many millilires there is in all
6 0
2 years ago
Read 2 more answers
Solve for x round to the nearest tenth if necessary
mash [69]

tan 39 = x /30

0.809 = x/30

x = 24.29

x = 24.3

7 0
2 years ago
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