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3 years ago

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A Weather Forecaster, predicts that there is a 30% chance of rain on Saturday and a 40% chance of rain on Sunday. If these proba

bilities are correct, what is the probability that it will rain both days?
35%

10%

12%

70%

2 answers:

nydimaria [60]3 years ago

8 0

Answer:

35%

Step-by-step explanation:

satela [25.4K]3 years ago

4 0

Answer:

The answer is 35%

Step-by-step explanation:

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Im confused is 3a the same as 5a squared or 4b to 4b squared

NeX [460]

Step-by-step explanation:

In order to be like terms, the variables and exponents must be the same.

3a can be combined with 14a and 4a.

4b can be combined with 3b and 16b.

a² cannot be combined with any of the terms.

6 0

3 years ago

That's the question ??

Oksanka [162]

Step-by-step explanation:

Before we answer, the area of a Circle given it radius is

$a = \pi r {}^{2}$

The area of a circle given it diameter is

$a = \pi( \frac{d}{2} ) {}^{2}$

So let answers question 1-4.

1. The area is

$1024\pi$

2. The area is

$576\pi$

3.

$1.225\pi$

4.

$309.76\pi$

For the 5th problem, circumference is

$\pi \times d$

where d is the diameter and

$2\pi r$

where r is the radius.

A circumference of 100 m means the radius is 50 because

$2\pi \times r = 100\pi$

$r = 50$

So this means the area is

$2500 {\pi}$

3 0

2 years ago

SOMEONE PLEASE HELP ILL MARK U BRAINLIST

Lemur [1.5K]

Answer:

The value of X is 1

Step-by-step explanation:

Trust me i did this already.

4 0

2 years ago

Read 2 more answers

On Monday joe bought 10 cups of coffee and 5 doughnuts for his office at the cost of $16.50. On Tuesday he bought 5 cups of coff

svp [43]

Answer:

each cup cost 1.25 on Tuesday

4 0

3 years ago

Before changes to its management staff, an automobile assembly line operation had a scheduled mean completion time of minutes. T

Sergio [31]

No, we don't have evidence to support that the mean completion time under new management has decreased but we can conclude that it remains at 15.5 minutes.

Given mean of 15.5 minutes , standard deviation of 1.7 minutes, sample size of 90 and sample mean of 15.4 minutes.

We can do the following study for conclusion:

Firstly the null hypothesis is

$H_{0}: x=15.5$

The alternate hypothesis is

$H_{1}: x < 15.5$

since the value is less than this is a one tailed test.

Z=x bar-x/d/ $\sqrt{n}$

where x is sample mean and d is standard deviation.

Z=15.4-15.5/1.7/ $\sqrt{90}$

=-0.1/1.7/9.4868

=-0.560

Critical value of Z at 0.1 level of significance

Z=-1.28

We fails to reject the null hypothesis since -0.560>-1,28

Hence we don't have evidence to support that the mean completion time under new management has decreased but we can conclude that it remains at 15.5 minutes.

Learn more about hypothesis at brainly.com/question/11555274

#SPJ4

Question is incomplete. It should include:

mean of 15.5 minutes ,

standard deviation of 1.7 minutes,

sample size of 90

and sample mean of 15.4 minutes.

5 0

1 year ago