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2 years ago

If A = {4, 7, 10, 13, 17) and B = {3,5, 7, 9), then which of the following statements is true?

Mathematics

1 answer:

stealth61 [152]2 years ago

6 0

Answer:

Step-by-step explanation:

hope this helps

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How many ounces are in a bag of trail mix that weighs .681kgs?

Romashka [77]

24.021568 ounces are in the bag of trail mix.

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3 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

3 years ago

Find the four arithmetic means between -21 and -36.

lara31 [8.8K]

The numbers given in the problem above are part of an arithmetic sequence with first and sixth terms equal to -21 and -36, respectively. Firstly, calculate for the common difference (d).

d = (-36 - -21) / (6 - 1) = -3

The arithmetic mean is calculated by adding -3 to the term prior to it.

a2 = -21 + -3 = -24 a3 = -24 + -3 = -27
a4 = -27 + -3 = -30 a5 = -30 + -3 = -33

Thus the four arithmetic means are -24, -27, -30, and -33.

4 0

3 years ago

3x/4-7/2=1/4 what does x equal

LUCKY_DIMON [66]

Answer:

x=5

Step-by-step explanation:

I did math and ForGOt

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3 years ago

I need to know this what is 4.75 as a fraction can someone help

WINSTONCH [101]

Answer:

4 $\frac{3}{4}$

Step-by-step explanation:

so we see a wholoe number "4", lets set that aside

we are left with 0.75 right

we can also write this as

75/100

we can simplify this by dividing 25 on both sides so it will becocme:

3/4

*Remember we have to bring the "4" we set aside earlier so final answer is*

4 and 3/4

8 0

3 years ago