Please help me please!!

Mathematics

1 answer:

irakobra [83]3 years ago

7 0

Answer:

mok

Step-by-step explanation:

mok

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%of 25 is 14. what percent of 20 is 11? 15 is

ikadub [295]

The first question:

'is' in mathematics means equal
'of' in mathematics means multiplication

$\frac{x}{100} \times 25 = 14\\\\\frac{x}{4} = 14\\\\\boxed{\bf{x=56}}$

56% of 25 is 14.

And the second question:

'is' in mathematics means equal
'of' in mathematics means multiplication

$\frac{x}{100} \times 20 = 11\\\\\frac{x}{5} = 11\\\\\boxed{\bf{x = 55}}$

55% of 20 is 11.

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Gennadij [26K]

4 1/10 then 1/4 then -4 then -4 3/4 hope that helps

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3 years ago

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Suppose that 11% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to

levacccp [35]

P = 0.11
1-p = .89
n = 200

mean = n*p = 22
std dev = n*sqrt(p(1-p)/n) = 4.425

find z values for standard normal distribution
Z= (30-22)/4.425 = 1/808
look up table to find P(Z less than 1.808) which is same P(x less than 30)

for 2nd part, you need 2 Z values
Z1 = (25-22) / 4.425 = 0.678
Z2 = (15-22) / 4.425 = -1.58

P(-1.58 less than Z less than 0.678) = P(Z less than .678) - P(Z less than - 1.58)

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4 years ago

A twelve-sided die with sides labeled through will be rolled once. Each number is equally likely to be rolled. What is the proba

FromTheMoon [43]

Complete Question:

A twelve-sided die with sides labeled 1 through 12 will be rolled once. Each number is equally likely to be rolled, what is the probability of rolling a number greater than 10?

Answer:

$P(T) = \frac{1}{6}$