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Natali [406]
2 years ago
12

Jackie buys 51 kilograms of rice for the school cafeteria. How many grams of rice did Jackie buy?​

Mathematics
1 answer:
tresset_1 [31]2 years ago
3 0
Jackie bought 51000 grams of rice. Because there are 1000 grams in a kilogram so, 51 x 1000 is 51000.
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How do you do these questions?
Tanzania [10]

Answer:

μ ≈ 2.33

σ ≈ 1.25

Step-by-step explanation:

Each person has equal probability of ⅓.

\left[\begin{array}{cc}X&P(X)\\1&\frac{1}{3}\\2&\frac{1}{3}\\4&\frac{1}{3}\end{array}\right]

The mean is the expected value:

μ = E(X) = ∑ X P(X)

μ = (1) (⅓) + (2) (⅓) + (4) (⅓)

μ = ⁷/₃

The standard deviation is:

σ² = ∑ (X−μ)² P(X)

σ² = (1 − ⁷/₃)² (⅓) + (2 − ⁷/₃)² (⅓) + (4 − ⁷/₃)² (⅓)

σ² = ¹⁴/₉

σ ≈ 1.25

3 0
3 years ago
Anna makes 120 dolls each month to sell. This month, she increases the number of dolls she makes by 30%. How many dolls does Ann
scoray [572]
120 * .30 (30%) = 36
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4 0
3 years ago
HELP MY FRIENDS PLEASE I BEG OF THEE​
Over [174]
<h2>Answer:</h2>

<u><em>The answer has to be 30. </em></u>

<h2>Step-by-step explanation:</h2>

<em>Correct me if I am incorrect but I would believe I am correct. Have a good one!</em>

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7 0
3 years ago
Questions and Answers<br>1.<br>A is 40% of B. what percentages<br>Discuss<br>A<br>6090<br>B.​
ratelena [41]

Answer:

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Step-by-step explanation:

5 0
2 years ago
Help! I'll give brainy
Ne4ueva [31]
The answer is A. 5/12
Hope it helped!
5 0
2 years ago
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