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Airida [17]
2 years ago
13

M: Mental

Mathematics
2 answers:
katrin [286]2 years ago
5 0

Answer:

Water is not wet, it makes things wet.

loris [4]2 years ago
5 0
A treehouse is just a tree holding its dead friend
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The volume of the prism is 900 cubic centimeters. The
Annette [7]

Answer:

?

Step-by-step explanation:

i dont now how to arrange

5 0
2 years ago
Lifetime of $1 Bills The average lifetime of circulated $1 bills is 18 months. A researcher believes that the average lifetime i
OLEGan [10]
<h2>Answer with explanation:</h2>

Let \mu be the population mean lifetime of circulated $1 bills.

By considering the given information , we have :-

H_0:\mu=18\\\\H_a:\mu\neq18

Since the alternative hypotheses is two tailed so the test is a two tailed test.

We assume that the lifetime of circulated $1 bills is normally distributed.

Given : Sample size :  n=50 , which is greater than 30 .

It means the sample is large so we use z-test.

Sample mean : \overline{x}=18.8

Standard deviation : \sigma=2.8

Test statistic for population mean :-

z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

\Rightarrow\ z=\dfrac{18.8-18}{\dfrac{2.8}{\sqrt{50}}}\approx2.02

The p-value= 2P(z>2.02)=0.0433834

Since the p-value (0.0433834) is greater than the significance level (0.02) , so we do not reject the null hypothesis.

Hence, we conclude that we do not have enough evidence to support the alternative hypothesis that the average lifetime of a circulated $1 bill differs from 18 months.

6 0
3 years ago
Find the value of x​
steposvetlana [31]

Answer:

x=3

Step-by-step explanation:

6x+6/32=9x-9/24

144x+144=288x-288

144x=288x-432

-144x=-432

Therefore, x=3

6 0
3 years ago
Read 2 more answers
2.5m to 150 cm <br>express these ratios in its simplest form.​
oksano4ka [1.4K]

Answer:

The ratios in the simplest form is 5:3

Step-by-step explanation:

Given that:

2.5m to 150cm

We have to express these ratios in simplest form but we will convert the quantities into same unit first.

Therefore,

Converting meters into centimeters

1 meter = 100 cm

2.5 m = 100*2.5 = 250 cm

Ratio form;

250 cm : 150 cm

As both the number are multiples of 50,

\frac{250}{50}:\frac{150}{50}\\5:3

Hence,

The ratios in the simplest form is 5:3

4 0
2 years ago
Luis wants to buy a skateboard that costs $89.99. He has $30 saved. He wants to save $11 each week until he has enough money to
Diano4ka-milaya [45]
<h3><u>Answer: 6 weeks.</u></h3><h2>Your explanation</h2>

You want to take 11 and multiply 11 by 6 and get 66. Then add 66 and 30 and get 96. That's more then enough for the skateboard. 5 weeks will only equal 85, so 6 weeks is the least you can do.

<em>-Edge</em>

5 0
3 years ago
Read 2 more answers
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