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bogdanovich [222]
3 years ago
6

The decorating committee for a school

Mathematics
1 answer:
Schach [20]3 years ago
5 0

Answer:

D. 160

Step-by-step explanation:

This question can be solved by proportions, using a rule of three.

In this question:

For each 3 white carnations, 5 yellows are needed, which leaves us with 8 total carnations. So for 60 white, the total is:

3 white - 8 total

60 white - x total

So

3x = 60*8

Dividing both sides by 3

x = 20*8 = 160

The correct answer is given by option D.

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liubo4ka [24]

\frac{ - 3}{10}

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6 0
2 years ago
The table below shows the different combinations of honey and oats that can be used in making granola.
posledela

Answer:

C

Step-by-step explanation:

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8 0
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Read 2 more answers
Evaluate the function given the value<br> f(x) = 1 - 2x; f(-12)<br> r
vesna_86 [32]

Answer:

The answer is 25

Step-by-step explanation:

f( - 12) = 1 - 2( - 12) = 1 + 24 = 25

3 0
3 years ago
Find the length of t​
Sergeu [11.5K]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
In an inductive generalization, in order to achieve an error margin of plus or minus 3 percentage points at a confidence level o
ANTONII [103]
Let n =  required random sample size.

Assume that the population standard deviation is known as σ.
Let m =  sample mean.
At the 95% confidence level, the expected range is
(m - k(σ/√n), m + k(σ/√n))
where k = 1.96.

Therefore the error margin is 1.96(σ/√n).
Because the error margin is specified as 3% or 0.03, therefore
(1.96σ)/√n = 0.03
√n = (1.96σ)/0.03
n = 128.05σ²

This means that the sample size is about 128 times the population variance.

Answer:
Smallest sample size = 128.05σ², where σ = population standard deviation.
6 0
3 years ago
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