2 years ago

Please Help!! I will give 10 points and brainliest..

Mathematics

1 answer:

docker41 [41]2 years ago

6 0

Answer:

I would go for D

You might be interested in

What is the slope of the line shown below?

Gemiola [76]

Answer:

Steps:

Using points (1,0) and (0,3), you can find the slope.

3 - 0 = 3

1 - 0 = 1

3/1 = 3

4 0

3 years ago

A random variable x takes four possible values, 0, 2, a, and b, where a and b are unknown numbers. if pr[x = 0] = 0.2, pr[x=2] =

Alexus [3.1K]

$\displaystyle\sum_{x\in\{0,2,a,b\}}\mathbb P(X=x)=1$
$\mathbb P(X=0)+\mathbb P(X=2)+\mathbb P(X=a)+\mathbb P(X=b)=1$
$0.2+0.4+0.3+\mathbb P(X=b)=1$
$\implies\mathbb P(X=b)=0.1$

$\mathbb E(X)=\displaystyle\sum_{x\in\{0,2,a,b\}}x\mathbb P(X=x)=2.8$
$0\mathbb P(X=0)+2\mathbb P(X=2)+a\mathbb P(X=a)+b\mathbb P(X=b)=2.8$
$0.8+0.3a+0.1b=2.8$
$0.3a+0.1b=2$

$a+b=6\implies0.3a+0.1b=0.2a+0.1(6)=2$
$0.2a+0.6=2\implies0.2a=1.4\implies a=7$

7 0

2 years ago

Please explain your answer

MariettaO [177]

Answer:

e = -1/2

Step-by-step explanation:

4/3 = -6e - 5/3

transfer -6e to the right

4/3 = -5/3 -6e

Find the LCM of 3,3and 1

and their LCM is 3. So, divide all through by 3

3(4/3) = 3(-5/3) - 6e × 3

4 = -5 -18e

combine

4 + 5 = -18e

9 = -18e

divide by -18

9/ -18 = -18e/ -18

-1/2 = e

e = -1/2

5 0

3 years ago

Graph this on a coordinate plane f(x)=2x^2-1

rodikova [14]

Answer:

Step-by-step explanation:

7 0

2 years ago

Heather opened a lemonade stand on her street. It costs her $5.25 to buy the supplies each day, and she sells lemonade for $1.50

victus00 [196]

Answer:

around 66.66

Step-by-step explanation:

hope this helps

6 0

2 years ago

Read 2 more answers