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4 years ago

What must be true in order for P (A or B) = P(A) + P (B)?

2 answers:

7 0

A and B must be disjoint in order for P (A or B) = P (A) + P (B). I am hoping that this answer has satisfied your query and it will be able to help you, and if you would like, feel free to ask another question.

snow_tiger [21]4 years ago

6 0

For the equation to be true, the events A and B must be mutually exclusive.

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Find the quotient. 22x 2 y 2 ÷ 11x 2 y 2

zmey [24]

$22x^2y^2:11x^2y^2=\\\\ =\frac{22x^2y^2}{11x^2y^2}\\\\ =\frac{2(11x^2y^2)}{11x^2y^2}\\\\ =2$

8 0

3 years ago

Nora's paper airplane flew 9 1/6 feet. That was 2 3/4 feet farther than Max's plane flew. Write and solve an equation to show ho

stepan [7]

Answer:

Max's paper airplane flew $\frac{77}{12}$ feet or $6\frac{5}{12}$ feet.

Step-by-step explanation:

As Nora's paper airplane flew 9 1/6 feet

i.e.

$9\frac{1}{6}=\frac{55}{6}$

Nora's paper was farther than Max's plane flew by = 2 3/4 feet

i.e.

$2\frac{3}{4}=\frac{11}{4}$

Thus the equation to show how far Max's paper airplane flew is:

$\:\:9\frac{1}{6}-2\frac{3}{4}$

$=\frac{55}{6}-\frac{11}{4}$

$\mathrm{Least\:Common\:Multiplier\:of\:}6,\:4:\quad 12$

$\mathrm{Adjust\:Fractions\:based\:on\:the\:LCM}$

$=\frac{110}{12}-\frac{33}{12}$

$\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}$

$=\frac{110-33}{12}$

$\mathrm{Subtract\:the\:numbers:}\:110-33=77$

$=\frac{77}{12}$

$=6\frac{5}{12}$

Therefore, Max's paper airplane flew $\frac{77}{12}$ feet or $6\frac{5}{12}$ feet.

6 0

3 years ago

What is 15/100 in simplest form

lara [203]

To make a fraction into simplest form you have to find the greatest common factor. In this case it is 5. So then you divide both the numerator and the denominator by the greatest common factor of 5.
15÷5=3
100÷5=20
There is no factors that go into both 3 and 20 so simplest form is 3/20.

5 0

3 years ago

Read 2 more answers

Simplify. 3/4 squareroot -48

zepelin [54]

Answer:

3i √3

Step-by-step explanation:

you can't have the square root of a negative number

so we use "i"

6 0

3 years ago

PLEASE CHECK AND SEE IF I'M CORRECT!!! CORRECT ANSWERS ONLY PLEASE!!!

jeka57 [31]

BD is right but PA is wrong, would be BD and MK.

5 0

3 years ago