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2 years ago

9. The scatter plot below shows the average yearly consumption of

Mathematics

1 answer:

PolarNik [594]2 years ago

7 0

A 20 gallons Bb. A Anna

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(Calculus help, 25 points, will give brainliest) Find the sum of the sigma notation below.

Andreyy89

$\displaystyle\sum_{i=3}^{10}(2i-9)=2\sum_{i=3}^{10}i-9\sum_{i=3}^{10}1$

Recall that

$\displaystyle\sum_{i=1}^n1=n$

$\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2$

Your sums start at $i=3$ , so in order to apply these formulas directly, you need to compensate for the missing first two terms:

$\displaystyle\sum_{i=3}^{10}1=\sum_{i=1}^{10}1-(1+1)=10-2=8$

$\displaystyle\sum_{i=3}^{10}i=\sum_{i=1}^{10}i-(1+2)=\frac{10\cdot11}2-3=52$

$\implies\displaystyle\sum_{i=3}^{10}(2i-9)=2\cdot52-9\cdot8=\boxed{32}$

4 0

3 years ago

Answer quickly please

adell [148]

Answer:

A C E

Step-by-step explanation:

pls mark brainliest

8 0

2 years ago

Which proportion models this problem?

Ilya [14]

Thank you for posting your question here at brainly. Feel free to ask more questions.

The best and most correct answer among the choices provided by the question is C. x over 520 = 5 over 13.

Hope my answer would be a great help for you.

7 0

3 years ago

I need help Write a linear inequality to represent the graph

pav-90 [236]

Answer:

y < 1/2x -5

Step-by-step explanation:

1/2 is the slope

-5 is the y intercept

8 0

3 years ago

Help with number 8 please

Mrrafil [7]

The answer would be 1440 feet^2, becasue for area you have to multiply the width, length, and depth. You bascally would draw a 3D rectangle and label the depth, height, and width. That would be your diagram.

7 0

2 years ago