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4 years ago

Events A and B are mutually exclusive, with P(A) = 0.36 and P(B) = 0.05.

1 answer:

4 0

Since A an B are mutually exclusive, you can just add the two probabilities. Mutually exclusive means that one does not depend at all on the other.

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What is the value of x so that l is parallel to m (5x+18) (12x+9)

zhenek [66]

Answer:

60x^2+261x+162

7 0

3 years ago

Write as an expression: a number that is equal to twice as much as x

lesantik [10]

Let's call the number we're looking for $y$ . We know that $y$ is twice as much as $x$ .

Twice as much as a number simply means the double of that number, and in turn the double of a number means to muliply that number by 2.

So, in order to obtain $y$ , you have to multply $x$ by 2. In formula, you have

$y = 2\cdot x$ or simply $y = 2x$

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3 years ago

Karen wants to advertise how many chocolate chips are in each big chip cookie at her bakery. she randomly selects a sample of 69

Tomtit [17]

Answer: $(10.1989,\ 11.0011)$

Step-by-step explanation:

Given : Sample size : n=69

Sample mean : $\overline{x}=10.6$

Standard deviation : $s=1.7$

Significance level : $\alpha:1-0.95=0.05$

Then , Critical value : $z_{\alpha/2}=1.96$

The formula to confidence interval is given by : -

$\overline{x}\pm z_{\alpha/2}\dfrac{s}{\sqrt{n}}\\\\\Rightarrow\ 10.6\pm (1.96)\dfrac{1.7}{\sqrt{69}}\\\\\approx10.6\pm0.4011=(10.6-0.4011,10.6+0.4011)=(10.1989,\ 11.0011)$

Hence, the 95% confidence interval for the number of chocolate chips per cookie for big chip cookies= $(10.1989,\ 11.0011)$

8 0

4 years ago

I need help what fits in

mina [271]

Answer:

The missing angle is 128°

Because corresponding angles are equal.

The angle pair is called corresponding angles 

8 0

3 years ago

Help me please I need an explanation.!

levacccp [35]

Answer:

Step-by-step explanation:

An ordered pair is a point on a coordinate graph that represents data. The x represents an independent variable and the y a dependent. Your y is your vertical axis. Each square on this graph represents 50 feet. The line on your graph hits the intersection between 2 minutes and 100 feet. Therefore (2,100) Is an ordered pair

4 0

4 years ago