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sleet_krkn [62]
3 years ago
9

you spin the spinner, flip a coin, then spin the spinner again. find the probability of the compound event. Spinning a 4, flippi

ng heads then spinning a 7
Mathematics
2 answers:
Tanya [424]3 years ago
8 0
How many numbers are on the spinner? 
ExtremeBDS [4]3 years ago
5 0
Hello,
We know that the spinner has 9 numbers according to what you say.
P(spinning a 4):
1/9
P(flipping heads):
1/2
P(spinning a 7):
1/9
Also, to find the compound events of this by multiplying:
1/9×1/2×1/9=1/162. As a result, the probability of the compound event. Spinning a 4, flipping heads then spinning a 7 is 1/162. Hope it help!
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One electrician charges his customers a $60 service fee plus $35 per hour.
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Answer:

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Step-by-step explanation:

We can do this by setting up an equality since we are finding when they are the same. Say x is the number of horus:

65 * x = 60 + 35* x

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GIVEN :

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b = 1/7 ( 2i + 3j - 6k)

TO FIND :

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SOLUTION :

◆Going with the equation given,

( 2a - b) . [ ( a x b ) x ( a + 2b)]

= (2a - b) [( a×b×a) + 2(a×b)×b]

◆BAC - CAB RULE,

A×B×C = B( A.B ) - C(A.B )

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Answer:

( 2 - b) . [ ( a x b ) x ( a + 2b)] = -5

Hoped I helped

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Step-by-step explanation:

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