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BabaBlast [244]

3 years ago

9

There were twelve times more children then adults at the mantinee performance of the school play. There were 455 people at the p

lay. How many adults and children were there?

1 answer:

castortr0y [4]3 years ago

3 0

12x=455.... Just divide 455/12 and get your answer for children then plug x back in to get adult answer

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In Salem, 82% of the households have cable television and Internet access and 90% of the houses have cable television. What is t

Alekssandra [29.7K]

The formula for conditional probability is:
$P(A|B)=\frac{P(A\cap B)}{P(B)}$
$P(I|C)=\frac{P(I\cap C)}{P(C)}=\frac{0.82}{0.90}=0.91$
The correct answer choice is therefore D) 91%

7 0

3 years ago

Read 2 more answers

Solve for x. Round your answer to the nearest hundredth.<br> 2x^2-6x+3=0

pogonyaev

Step-by-step explanation:

$2 {x}^{2} - 6x + 3 = 0 \\ x = \frac{ - b± \sqrt{ {b}^{2} - 4ac} }{2a} \\ x = \frac{6± \sqrt{12} }{4} \\ x = 2.4 \: or \: 0.6$

7 0

3 years ago

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con

Naddika [18.5K]

Answer:

The sample size is $n = 68$

Step-by-step explanation:

From the question we are told that

The margin of error is $E = 5 \ years$

The standard deviation is $\sigma = 22$

From the question we are told the confidence level is 94% , hence the level of significance is

$\alpha = (100 - 94 ) \%$

=> $\alpha = 0.06$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.881$

Generally the sample size is mathematically represented as

$n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2$

=> $n = [\frac{1.881 } * 22 }{5} ] ^2$

=> $n = 68$

8 0

3 years ago

A cab company charges $5 per cab ride, plus an additional $1 per mile driven. How long is a cab ride that costs $14?

marishachu [46]

Answer:

The answer is 9 miles.

Step-by-step explanation:

14-5=9.

5 0

3 years ago

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I will mark you brainliest! The value of a car decreases by 1/6 every year. What type or function represents this pattern?

d1i1m1o1n [39]

Answer:

C

Step-by-step explanation:

When the value of something decreases by a certain factor every unit of time, instead of by a set constant, then this is called exponential decay. When the rate is constant, this is called linear decay. Hope this helps!

3 0

4 years ago