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3 years ago

11

Cheryl has a cake recipe which calls for 3/4 a cup of flour. The only measuring cup she has is 1/8 a cup. How many cups should s

he use of the 1/8 cup should she use when making the cake? Show your work...
A. 4
B. 6
C. 8
D. 10

1 answer:

fiasKO [112]3 years ago

3 0

2/8 =1/4

6/8 = 3/4

So 6

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The number of students in a chess club decreased from 14 to 12. What is the percent decrease? Round your answer to the nearest p

Zolol [24]

Answer:

14.2857% decrease

≈ 14.3% decrease

Step-by-step explanation:

nearest tenths : 14.3%

nearest hundredths : 14.29%

nearest thousandths : 14.286%

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3 years ago

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3 years ago

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3 years ago

Read 2 more answers

Find the variance of the following data. Round your answer to one decimal place. x 1 2 3 4 5 P(X=x) 0.3 0.2 0.2 0.1 0.2

Reptile [31]

The variance of a distribution is the square of the standard deviation

The variance of the data is 2.2

<h3>How to calculate the variance</h3>

Start by calculating the expected value using:

$E(x) = \sum x* P(x)$

So, we have:

$E(x) = 1 * 0.3 + 2* 0.2 +3 * 0.2 + 4 * 0.1 + 5 * 0.2$

This gives

$E(x) = 2.7$

Next, calculate E(x^2) using:

$E(x^2) = \sum x^2* P(x)$

So, we have:

$E(x^2) = 1^2 * 0.3 + 2^2* 0.2 +3^2 * 0.2 + 4^2 * 0.1 + 5^2 * 0.2$

$E(x^2) = 9.5$

The variance is then calculated as:

$Var(x) = E(x^2) - (E(x))^2$

So, we have:

$Var(x) = 9.5 - 2.7^2$

$Var(x) = 2.21$

Approximate

$Var(x) = 2.2$

Hence, the variance of the data is 2.2

Read more about variance at:

brainly.com/question/15858152

4 0

2 years ago

Round 8 3/8 to the nearest whole number

kicyunya [14]

The exact form of 8 3/8, is 67/8 Decimal Form: 8.375 & Mixed number: 8 3/8

8 0

4 years ago