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3 years ago

If you flip a coin 3 times what is the probability of getting 0 heads

Mathematics

1 answer:

nordsb [41]3 years ago

5 0

the answer is 1/8 because since one toss would be 1/2 then 1/2 * 1/2 *1/2= 1/8

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The LSN basketball team had 292 fans at a game. Adults paid $3.00 to get in and students paid $2.00. A total of $756.00 was coll

rjkz [21]

Answer:

x (378) + y (378) =

Step-by-step explanation:

First i split 756.00 in half so basically what ever is multiplied by two to get 756 and i got 378. So since x = 3.00 and y = 2.00, it would come out to this:

3.00 x 378 = x (378) =

2.00 x 378 = y (378) =

So:

x (378) + y (378) =

im sorry if i got it wrong-

5 0

3 years ago

Find the coefficient of correlation between and X and Y if covariance between X and Y is 15 and the variance of X and Y are resp

IRINA_888 [86]

Answer:

0.95

Step-by-step explanation:

$Correlation \ coefficient \ (r) = \dfrac{covaraince \ between \ X \ and \ Y }{SD_X \times SD_Y }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{10^{1/2} \times 25^{1/2} }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{3.162 \times 5 }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{15.81 }$

$Correlation \ coefficient \ (r) \simeq 0.95$

5 0

3 years ago

Toni can carry up to 18 lb in her backpack her lunch weighs 1lb,her gym clothes weigh 2lb and her books ( b ) weigh 3lb each how

Natasha_Volkova [10]

Toni can carry 5 books. 18 - 3= 15 15/3=5

6 0

3 years ago

[3 (×-4)-7] + [5 (x-1)+5]

pychu [463]

A. 8x-19
i believe i understood what was being asked

3 0

4 years ago

Brenda is going from $(-4,5)$ to $(5,-4)$, but she needs to stop by the origin on the way. How far does she have to travel?

Taya2010 [7]

Answer:

2 $\sqrt{41}$ units is the distance that Brenda is going to travel.

Step-by-step explanation:

Given that:

Brenda starts from point $(-4,5)$ to $(5,-4)$

Let point P $(-4,5)$ and Q $(5,-4)$ .

But given that she need to stop by origin O $(0, 0)$ .

So, she travels from P to O first and then goes form O to Q.

Please refer to the attached figure for better understanding.

We need to find the distance PO + OQ to find the total distance traveled by Brenda.

We can use Distance formula :

$D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

For PO:

$x_2 = 0\\x_1 = -4\\y_2 = 0\\y_1 = 5$

$PO = \sqrt{(0-(-4))^2+(0-5)^2}\\\Rightarrow PO = \sqrt{(4)^2+(5)^2} = \sqrt{41}\ units$

Similarly, For OQ:

$x_2 = 5\\x_1 = 0\\y_2 = -4\\y_1 =0$

$OQ = \sqrt{(5-0)^2+(-4-0)^2}\\\Rightarrow OQ = \sqrt{(5)^2+(4)^2} = \sqrt{41}\ units$

So, the total distance traveled = PO + OQ = $\sqrt{41}+\sqrt{41}=2\sqrt{41}\ units$

2 $\sqrt{41}$ units is the distance that Brenda is going to travel.

6 0

3 years ago