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iragen [17]
4 years ago
9

HELP Use the properties of sigma notation and the summation formulas to evaluate. See attached

Mathematics
1 answer:
Naddik [55]4 years ago
3 0
Write out all the solutions from 1 to 10 and add them together 

(1^2+3(1)-2)=2
(2^2+3(2)-2)=8 
" = 16
" = 32 
" = 38 
" = 52
" = 68 
" = 86 
" = 106 
" = 128

Add them together: 530 

Hope I helped :) 
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The differences between a number and 12 is 20
Alika [10]
X-12=20
x=20+12
x=32

answer is 32
3 0
3 years ago
8
Kruka [31]

Answer:

Y=-1/4x-4

Step-by-step explanation:

To find the slope, you would need to use the equation y2-y1/x2-x1 by the coordinates. You would get -3-(-2)/-4-(-8). This would result in -1/4. Now that you have your slope, you plug in one of the coordinates. If you used  (-8,-2), you would get -2=-8(-1/4)+b. Simplify the equation to get -2=2+b, which simplifies to -4=b, and b is the y intercept.

6 0
3 years ago
How do I read a box plot?
dlinn [17]

Answer:  

A boxplot is a way to show a five number summary in a chart. The main part of the chart (the “box”) shows where the middle portion of the data is: the interquartile range. At the ends of the box, you” find the first quartile (the 25% mark) and the third quartile (the 75% mark). The far left of the chart (at the end of the left “whisker”) is the minimum (the smallest number in the set) and the far right is the maximum (the largest number in the set). Finally, the median is represented by a vertical bar in the center of the box.

Box plots aren’t used that much in real life. However, they can be a useful tool for getting a quick summary of data.

How to Read a Box Plot: Steps

Step 1: Find the minimum.

The minimum is the far left hand side of the graph, at the tip of the left whisker.  

Step 2: Find Q1, the first quartile.

Step 3:  Find the median.

Step 4: Find Q3, the third quartile.

Step 5: Find the maximum.

hope this helps!!

4 0
3 years ago
Find the length of the third side. If necessary, round to the nearest tenth.
Ludmilka [50]

Answer:

x=6.8

Step-by-step explanation:

x^2+21^2=25^2

x=√46=6.8

can i have brainliest

4 0
3 years ago
One of the models of a windmill is 1.2 meters tall and 0.8 meters wide. The width of the actual windmill is 20 meters . What is
tatyana61 [14]
Answer: 30 m
Workinh Out: 20 divided by 0.8 = 25.
1.2 x 25 = 30
8 0
4 years ago
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