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3 years ago

How do you move a number 2 decimal places

Mathematics

2 answers:

Reil [10]3 years ago

6 0

Divide by 100
Hope this helps!

Rudiy273 years ago

5 0

I depends on if you are going 2 decimal places to the left, or two decimal places to the right.

If you want to move a number two decimal places to the left you can multiply it by 0.01 or divide it by 100

x*0.01 or x/100

If you want to move two decimal places to the right, you can multiply it by 100.

x*100

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Step-by-step explanation:

the answer is 0.2

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3 years ago

OBTAINING ONE HEAD ONLY WHEN A DIE IS<br> ROLLED AND 2 COINS ARE TOSSED.<br> Probability

Valentin [98]

Answer:

⅓

Step-by-step explanation:

n(s) 1 die & 2 coins = 6×4 = 24

n (event) 1 head = 6 (by die) +2( by coins)

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so, probability P = 8/24 = ⅓

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3 years ago

An article presents a study of the failure pressures of roof panels. A sample of 15 panels constructed with 8-inch nail spacing

wariber [46]

Answer:

There is sufficient evidence to conclude that six inches spacing has a higher mean failure pressure than 8 inches

Reject $H_0\ at\ 5%$ level of significance

Step-by-step explanation:

From the question we are told that:

Sample size 1 $n_1=15$

Spacing 1 $s_1=8$

Mean 1 $\=x_1=8.48$

Standard deviation 1 $\sigma_1=0.96 kPa$

Sample size 2 $n_2=16$

Spacing 2 $s_2=6$

Mean 1 $\=x_1=9.93$

Standard deviation 1 $\sigma_1=1.02 kPa$

Generally the hypothesis is mathematically given as

Null $H_0:\mu_1-\mu_2$

Alternative $H_a:\mu_1\mu_2$

Generally the equation for pooled estimate is mathematically given by

$S=\sqrt{\frac{(n_1-1)\sigma_1^2+(n_2-1)\sigma_2^2}{n_1+n_2-2} }$

Therefore

$S=\sqrt{\frac{(15-1)0.96^2+(16-1)1.02^2}{15+15-2} }$

$S=0.9905$

Generally the equation for test statistics is mathematically given by

$t=\frac{\=x_1+\=x_2}{S\sqrt{\frac{1}{n _1}+\frac{1}{n_2}}}$

$t=\frac{\=8.48-9.93}{0.9905\sqrt{\frac{1}{15}+\frac{1}{15}}}$

$t=-4.00091$

Therefore From table

$P value=P(t_{15+15-2}=4.00091)$

$P value=0.00041918$

$P$

Therefore

There is sufficient evidence to conclude that six inches spacing has a higher mean failure pressure than 8 inches

Reject $H_0\ at\ 5%$ level of significance

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3 years ago

Find the lowest natural number which when divided by 12, 45, 15 and 10 leaves the remainder of

Levart [38]

12=2*2*3
45=3*3*5
15=3*5
10=2*5
L.C.M=2*2*3*3*5=180
required number 180+2=182

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2 years ago

If the porprotion of defective in the sample is less than 12%, it is reasonable to conclude that the new process is better.

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answer: false

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3 years ago