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3 years ago

-4.5x (-2) I need this solved please:)

1 answer:

4 0

I’m assuming this is set equal to 0?
If it is, then divide by -2 on both sides to get
-4.5x=0
The divide -4.5 like you did earlier to get
X=0
If not you could just multiply-4.5*-2 which is 9
But really there are no like terms connecting these so 9 isn’t really a plausible answer it really depends what the other side of the equation is

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Answer: 1. 0.0256

2. 0.4096

Step-by-step explanation:

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$P(x)=^nC_xp^x(1-p)^{n-x}$ , where n= Total number of trials

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Let x be the number of customers will make purchase.

As per given , we have

p= 0.20

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1. The probability that 3 of the next 4 customers will make a purchase will be:-

$P(x=3)=^4C_3(0.20)^3(1-0.20)^{4-3}$

$P(x=3)=(4)(0.20)^3(0.80)^{1}\ \ [\because\ ^nC_{n-1}=n]$

$P(x=3)=(4)(0.008)(0.80)=0.0256$

Hence, the probability that 3 of the next 4 customers will make a purchase = 0.0256

2. The probability that none of the next 4 customers will make a purchase will be :

$P(x=0)=^4C_0(0.20)^0(1-0.20)^{4-0}$

$P(x=0)=(1)(0.80)^{4}\ \ [\because\ ^nC_{0}=1]$

$P(x=0)=0.4096$

Hence, the probability that none of the next 4 customers will make a purchase= 0.4096

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3 years ago

A clock tower has a circular clock face with an area of 144pi square feet. What is the diameter of the clock face? Teacher wants

nekit [7.7K]

Answer:

d = 24

Step-by-step explanation:

The area of a circle is given by A = π * r²

We are told the area of the clock is 144π.

Let's clear the formula for the radius:

r² = A / π

r² = 144π / π

r² = 144

r = √144

r = 12

The diameter is two times the radius, d = 2r = 2*12 = 24.

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Step-by-step explanation:

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3 years ago

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3 years ago

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