2 years ago

Help me plzzzzzzzzzzzzzzzzzzzzzzzzz

Mathematics

2 answers:

SVETLANKA909090 [29]2 years ago

7 0

Answer:

Step-by-step explanation:

1. 12+6 = 18 so that's the diameter of the big circle

2. next we take the square of 18 and multiply it by pi (324x3.14)

3. answer: 1017.36

aivan3 [116]2 years ago

5 0

Answer:

254.34

Step-by-step explanation:

12 + 6 = 18/2 = 9

A=πr2=π·92 ≈ 254.34

You might be interested in

What is equivalent to 5(9q + 7)

Andrej [43]

Answer:

45q + 35

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

X is negative and<br> x + y is positive.<br> X =<br> Explanation:

-Dominant- [34]

Answer:

Y must be greater than X

X must be less than Y

4 0

2 years ago

What’s 836 written in expanded form

kotegsom [21]

8.36x10^3 ? i think :(. i'm not sureeee

6 0

2 years ago

Read 2 more answers

If A and B are independent events with P(A) = .5 and P(B) = .2, find the following:a) P(A U B)b) P(A^c ? B^c)c) P(A^c U B^c)**No

Effectus [21]

If A and B are independent, then $P(A\cap B)=P(A)P(B)$ .

$P(A\cup B)=P(A)+P(B)-P(A\cap B)=P(A)+P(B)-P(A)P(B)$

$P(A\cup B)=0.5+0.2-0.5\cdot0.2$

$\boxed{P(A\cup B)=0.6}$

b. I'm guessing the ? is supposed to stand for intersection. We can use DeMorgan's law for complements here:

$P(A^c\cap B^c)=P(A\cup B)^c=1-P(A\cup B)$

$P(A^c\cap B^c)=1-0.6$

$\boxed{P(A^c\cap B^c)=0.4}$

c. DeMorgan's law can be used here too:

$P(A^c\cup B^c)=P(A\cap B)^c=1-P(A\cap B)=1-P(A)P(B)$

$P(A^c\cup B^c)=1-0.5\cdot0.2$

$\boxed{P(A^c\cup B^c)=0.9}$

4 0

2 years ago

Joesl's father is 45. He is 15 years older than twice joe's age. How old Is joe?

tresset_1 [31]

Joe is 15, 45-15=30 30/2=15

6 0

3 years ago