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andrew-mc [135]
3 years ago
13

Q and R are independent events. P(Q)=0.2 and P(R)=0.4. find P(Q and R)

Mathematics
1 answer:
frutty [35]3 years ago
5 0
P(Q and R) = P(Q) *P(R) =0.2*0.4=0.08
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Let g(x)= -3x and h(x) x^2+3 Find (g°h)(0)
raketka [301]
<h3>Answer is   -9</h3>

=================================

Work Shown:

(g°h)(x) is the same as g(h(x))

So, (g°h)(0) = g(h(0))

Effectively h(x) is the input to g(x). Let's first find h(0)

h(x) = x^2+3

h(0) = 0^2+3

h(0) = 3

So g(h(x)) becomes g(h(0)) after we replace x with 0, then it updates to g(3) when we replace h(0) with 3.

Now let's find g(3)

g(x) = -3x

g(3) = -3*3

g(3) = -9

-------

alternatively, you can plug h(x) algebraically into the g(x) function

g(x) = -3x

g( h(x) ) = -3*( h(x) ) ... replace all x terms with h(x)

g( h(x) ) = -3*(x^2 + 3) ... replace h(x) on right side with x^2+3

g( h(x) ) = -3x^2 - 9

Next we can plug in x = 0

g( h(0) )  = -3(0)^2 - 9

g( h(0) ) = -9

we get the same result.

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3 years ago
Benjamin buys a candy apple that was on sale for 20% off he paid with a five dollar bill and received 1.80 dollars in change wha
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Answer:2.2

Step-by-step explanation:

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4 years ago
Choose all the answers that apply. Todd drops three balls made of different materials to see how high they will bounce. He drops
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The independent variable is the type of material the balls are made from


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Inventor A had 630 inventions, 600% more than the number of inventions inventor B had. How many inventions did B have?
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Answer:

105 inventions

Step-by-step explanation:

Find how many inventions Inventor B had by dividing 630 by 6:

630/6

= 105

So, Inventor B had 105 inventions

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PLEASE HELP!! I REALLY NEED IT!!
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the answer would be 6 planes

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