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3 years ago

SOMEONE HELP.Whos good with parallelogram.Need good answer

Mathematics

1 answer:

sashaice [31]3 years ago

8 0

Yes that is a parallelogram

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Some people advise that in very cold weather, you should keep the gas tank in your car more than half full. Lou's car had 5.3

ZanzabumX [31]

Answer:

$26.98

Step-by-step explanation:

1. You have the following information given in the problem above:

- Lou filled the tank with gas that cost $3.80 per gallon.

- Lou's car had 5.9 gallons in the 13-gallon tank.

2. Therefore, if he filled the tank, you can calculate the total amount of money Lou spent, by subtracting 13 gallons and 5.9 gallons and multiplying the result by $3.80.

8 0

3 years ago

Set A of six numbers has a standard deviation of 3 and set B of four numbers has a standard deviation of 5. Both sets of numbers

Alenkinab [10]

Given:

$\sigma_A=3$

$n_A=6$

$\sigma_B=5$

$n_B=4$

$\overline{x}_A=\overline{x}_B$

To find:

The variance. of combined set.

Solution:

Formula for variance is

$\sigma^2=\dfrac{\sum (x_i-\overline{x})^2}{n}$ ...(i)

Using (i), we get

$\sigma_A^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{n_A}$

$(3)^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}$

$9=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}$

$54=\sum (x_i-\overline{x}_A)^2$

Similarly,

$\sigma_B^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{n_B}$

$(5)^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}$

$25=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}$

$100=\sum (x_i-\overline{x}_B)^2$

Now, after combining both sets, we get

$\sigma^2=\dfrac{\sum (x_i-\overline{x}_A)^2+\sum (x_i-\overline{x}_B)^2}{n_A+n_B}$

$\sigma^2=\dfrac{54+100}{6+4}$

$\sigma^2=\dfrac{154}{10}$

$\sigma^2=15.4$

Therefore, the variance of combined set is 15.4.

7 0

2 years ago

Given g(x)=-4(x+4)^2 - 8 what transformations were done compared to the parent function f(x)=x^2 ?

guajiro [1.7K]

A reflection over the x-axis,horizontal shift of 4 in the left direction and a downward shift of 8

3 0

3 years ago

Hey bro take these points

Stella [2.4K]

Answer:

steve is cute

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Write 25 times 10 to the 6 power in scientific notation

polet [3.4K]

Answer:

2.5*10^7 thank you

Step-by-step explanation:

thank you

3 0

2 years ago

SOMEONE HELP.Whos good with parallelogram.Need good answer​

SOMEONE HELP.Whos good with parallelogram.Need good answer