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3 years ago

20 points!! What are the next three terms of the arithmetic sequence -18, -13, -8, -3,…?

Mathematics

2 answers:

GarryVolchara [31]3 years ago

4 0

Answer:

3, 8, 13, 18

Step-by-step explanation:

Novosadov [1.4K]3 years ago

3 0

I think the pattern goes plus five each time so the next three numbers would be 2, 7, 12

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Simplify: (2x + 8)(7x2 - 9x - 5)

kondaur [170]

Answer:

-18x^2 -54x + 72

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Jenna has bought a new hybrid car. Each week for a period of seven weeks, she has noted the fuel efficiency (in miles per gallon

Leviafan [203]

Answer: 0.82 miles per gallon

Step-by-step explanation:

Given : Jenna has bought a new hybrid car. Each week for a period of seven weeks, she has noted the fuel efficiency (x) (in miles per gallon) of her car.

The results are :45 44 43 44 45 44 43

The formula to find the standard deviation is given by :-

$\sigma=\sqrt{\dfrac{\sum_{i=1}^n(x_i-\overline{x})^2}{n-1}}$

First we find mean of the given data ,

$\overline{x}=\dfrac{\sum^n_{i=1}x_i}{n}\\\\=\dfrac{45+44+43+44+45+44+43}{7}=\dfrac{308}{7}=44$

Now,

${\sum_{i=1}^n(x_i-\overline{x})^2=(1)^2+(0)^2+(-1)^2+(0)^2+(1)^2+(0)^2+(-1)^2$

$=1+1+1+1=4$

Now, standard deviation of the above results will be :-

$\sigma=\sqrt{\dfrac{4}{7-1}}\\\\=\sqrt{\dfrac{4}{6}}\\\\=\dfrac{2}{\sqrt{3}}=0.816496580928\approx0.82$

Hence, the standard deviation of these results = 0.82 miles per gallon

8 0

4 years ago

A foam block is in the shape of a rectangular prism. Can a TRAPEZOID be a cross-section formed by slicing through the block? *

12345 [234]

if this is a yes or no q i think its no

if not im so sorry

5 0

3 years ago

Help please! No rush, I'll give brainliest for best answer

Yanka [14]

9514 1404 393

Answer:

Step-by-step explanation:

Your friendly local graphing calculator or spreadsheet can tell you the quadratic regression equation. It best matches choice A.

5 0

3 years ago

If the scale of the map is 1 inch = 125 miles, two points that are 3.75 inches apart will actually be approximately how many mil

lys-0071 [83]

Answer:

469 miles

Step-by-step explanation:

1 in = 125 miles

3.75 in =?

3.75 x 125 = 468.75 miles

468.75 rounds up to 469 miles

3 0

3 years ago