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fiasKO [112]
4 years ago
12

243/8-(541/8)= how to solve it

Mathematics
1 answer:
alexgriva [62]4 years ago
7 0
\frac{243}{8} - (\frac{541}{8} ) 

First, simplfy brackets. / Your problem should look like: \frac{243}{8} - \frac{541}{8}
Second, join the denominators. / Your problem should look like: \frac{243-541}{8}
Third, simplify. / Your problem should look like: - \frac{298}{8}
Fourth, simplify \frac{298}{8} to \frac{149}{4}
Fifth, convert to a mixed fraction. / Your problem should look like: -37 \frac{1}{4}

Answer as fraction: -37 \frac{1}{4}
Answer as decimal: -37.25

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Seventy-six percent of sunflower seeds will germinate into a flower, and a sample of 800 such sunflower seeds is randomly select
ollegr [7]

Answer:

12.08

Step-by-step explanation:

For each sunflower, there are only two possible outcomes. Either it germinates, or it does not. The probability of a sunflower germinating is independent of other sunflowers. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Seventy-six percent of sunflower seeds will germinate into a flower

This means that p = 0.76

Samples of 800:

This means that n = 800

The standard deviation for the number of sunflower seeds that will germinate in such samples of size 800 is:

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{800*0.76*0.24} = 12.08

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3 years ago
12/23+(9 6/8−3 1/4) help me
vagabundo [1.1K]

Answer:

7.5

Step-by-step explanation:

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3 years ago
A certain ceiling is made up of tiles. Every square meter of ceiling requires 10.75 tiles. Fill in the table with the missing va
ANEK [815]

Answer:

See Explanation

Step-by-step explanation:

Given:

See Attachment

Required

Complete the table

From the question, we understand that:

1m^2 = 10.75\ tiles

So:

When square meters = 1

X = 10.75 * 1

X = 10.75

When square meters = 10

X = 10.75 * 10

X = 107.5

Assume any value of square meter for the third row;

Say: square meters = 20

X = 10.75 * 20

X = 215

When square meters = a

X = 10.75 * a

<h2>X = 10.75a</h2>

5 0
3 years ago
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UNO [17]

Answer:

781.25

Step-by-step explanation:

Regular pay = 40*12.50 = 500.00

Overtime = 15*12.5*1.5 = 281.25

Gross pay = 500.00 + 281.25 = 781.25

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3 years ago
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Lelechka [254]

Answer:

Step-by-step explanation:

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