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Klio2033 [76]
2 years ago
9

The mean of a list of 80 numbers is 230. If four numbers 145,156,210, and 255 are added, what is the mean of the list of numbers

?
i saw a same question but it wasn't answered correctly, since the answer for this question is 228.17, and i have to show how to get to that answer which i dont know how to do.
Mathematics
2 answers:
anygoal [31]2 years ago
7 0
Add 145, 156, 210. and 255 then divide by 4. The mean equals 184. 
Goshia [24]2 years ago
7 0
Step 1: 230 x 80 = 18400
Step 2: add 145, 156, 210, 255 to 18400=19166
Step 3: divide 19166 with 84= 228.17 (answer to nearest 2 decimal points)
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What the number is 1/10 the value of 237
Troyanec [42]
1/10 the value of 237 means we must multiply 1/10 by 237

1/10 * 237 = 23.7

Hope this helps!
4 0
2 years ago
Point T, the midpoint of segment RS, can be found using the formulas x = (6 – 2) + 2 and y = (4 – 6) + 6. What are the coordinat
Fiesta28 [93]

Question:

Point T, the midpoint of segment RS, can be found using the formulas x = (1/2) (6 – 2) + 2 and y = (1/2) (4 – 6) + 6. What are the coordinates of point T?

Answer:

T(4,5)

Step-by-step explanation:

Given

x = \frac{1}{2}(6 - 2) + 2

y = \frac{1}{2}(4 - 6) + 6

Required

Determine the coordinates of T

The coordinates of T can be represented as T(x,y)

To do this, we simply solve for x and y

x = \frac{1}{2}(6 - 2) + 2

Solve 6 - 2

x = \frac{1}{2}*4 + 2

Solve 1/2 * 4

x = 2 + 2

x = 4

y = \frac{1}{2}(4 - 6) + 6

Solve 4 - 6

y = \frac{1}{2}*-2 + 6

Solve 1/2 * -2

y = -1 + 6

y = 5

Hence, the coordinates of T(x,y) is:

T(x,y) = T(4,5)

5 0
2 years ago
Read 2 more answers
Round each weight to the nearest whole gram. Then estimate the total weight of the coins in Allen’s hand. 2.500,5.000,2.268,5.67
irina1246 [14]
So the rounded weights would be 3, 5, 2, 6, and 11, as when you round, you look at the number to the right of the one you want to round to. If it's 5 or larger, you add one to the spot you're rounding to, and make the rest of the numbers after into zeroes. If it's below 5, just change the ones after the one you want to round to into zeroes and don't add one.

Then for the estimating of the weight, you would add them together. 3+5+2+6+11. That would equal 27, so the estimate weight is 27 grams.
8 0
2 years ago
We can calculate EE, the amount of euros that has the same value as DD U.S. dollars, using the equation E=\dfrac{17}{20}DE=
Rudik [331]

Answer:

We are given eqaution: e=\frac{17}{20}d , where e the amount of euros and d is the value as U.S. Dollars.


We need to find number of euros for 1 U.S. Dollar.


Plugging d=1 in the given equation


We get


e=\frac{17}{20}(1)


On simplfying , we get


e=\frac{17}{20}


Dividing 17 by 20, we get 0.85.


Therefore, there would be 0.85 euro have the same value as 1 U.S. Dollar.


Read more on Brainly.com - brainly.com/question/11243826#readmore

Step-by-step explanation:


5 0
2 years ago
Read 2 more answers
RESTAURANTS In 2012, a popular pizza franchise had 2483 restaurants. In 2017, there were 2606 franchised
lisabon 2012 [21]

y  -  2483  =  24.6(x - 2)

Let x represent the number of years after 2010

Let y represents the number of restaurants in x years

2012 is 2 years after 2010

2017 is 7 years after 2010

Number of restaurants owned by RESTAURANTS in 2012 = 2483

This can be represented in coordinate form as (2, 2483)

Number of restaurants owned by RESTAURANTS in 2017 = 2606

This can be represented in coordinate form as (7, 2606)

The equation of a line in point-slope form is:

y-y_{1} = m(x - x_{1}  )

where m represents this slope, and is calculated as:

m = \frac{y_{2} - y_{1} }{x_2-x_1} \\m = \frac{2606-2483}{7-2} \\m = \frac{123}{5} \\m = 24.6

Substitute x₁ = 2, y₁  = 2483, and m = 24.6 into the point-slope equation

The equation in point-slope form becomes:

y  -  2483  =  24.6(x - 2)

Learn more here: brainly.com/question/6497976

5 0
2 years ago
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