I need help with number 12

Mathematics

2 answers:

Anastaziya [24]3 years ago

8 0

The answer is 24.94

Hope this helps!

FrozenT [24]3 years ago

5 0

24.94 ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ <span> ‍ </span>

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Lisa's weekly pay increases from $525 to $546<br> Calculate her percentage pay increase.

Lana71 [14]

546 - 525 = 21

21 is 4% of 525.

Lisa gained a 4% pay increase.

6 0

3 years ago

Consider the graph of the linear equation 2x - 5y = 10.

jeyben [28]

Answer:

x-intercept= (5,0)

y-intercept= (0,-2)

Slope= 2/5

Step-by-step explanation:

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3 years ago

What is the equivalent of | -21 |

Fynjy0 [20]

That's 21.

Hope this helps !

Nyway

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3 years ago

Read 2 more answers

3.11 A shipment of 7 television sets contains 2 defective sets. A hotel makes a random purchase of 3 of the sets. If x is the nu

djverab [1.8K]

Answer:

Probability distribution for x:

$P(x=0)=0.3644\\\\P(x=1)=0.4373\\\\P(x=2)=0.1749\\\\P(x=3)=0.0233\\\\$

Step-by-step explanation:

We can model the number of defective sets in the group of TV sets (variable x) as a binomial variable, with sample size=3 and probability of success p=2/7≈0.2857.

The probability of k defective sets in the group is:

$P(x=k) = \dbinom{n}{k} p^{k}q^{n-k}$

So, we have this probabilty distribution for x:

$P(x=0) = \dbinom{3}{0} p^{0}q^{3}=1*1*0.3644=0.3644\\\\\\P(x=1) = \dbinom{3}{1} p^{1}q^{2}=3*0.2857*0.5102=0.4373\\\\\\P(x=2) = \dbinom{3}{2} p^{2}q^{1}=3*0.0816*0.7143=0.1749\\\\\\P(x=3) = \dbinom{3}{3} p^{3}q^{0}=1*0.0233*1=0.0233\\\\\\$