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3 years ago

13

A school assigns each student an identification number. the number consists of 3 digits out of 10 possible digits, and no digits

are repeated. how many different identification numbers are possible

1 answer:

tankabanditka [31]3 years ago

8 0

10-3 = 7 hopefully this helps

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Twice the difference of three less than a number.

Veseljchak [2.6K]

Answer:

the answer would be 2(3-x)

Step-by-step explanation:

x would be the number that is given and since it says twice than 2 would be outside the parenthesis since the main equation would be inside the parenthesis

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3 years ago

A recipe calls for 3/4 cup of butter. Angie wants to triple the recipe, but she has only 1 5/8.

Lyrx [107]

Let's start out by tripling the original recipe to see how much butter Angie needs.

$\frac{3}{4} * 3 = total$
$\frac{3* 3}{4} = total$
$\frac{9}{4} = total$
$2 \frac{1}{4} = total$

So we need $2 \frac{1}{4}$ cups of butter, but Angie only has $1 \frac{5}{8}$ . Let's subtract what Angie has from the total to see how much more she needs.

$2 \frac{1}{4} - 1\frac{5}{8} = n$
$\frac{9}{4} - \frac{13}{8} = n$
we will need the least common denominator for both fractions
$\frac{2}{2} *(\frac{9}{4}) - \frac{13}{8} = n$
$\frac{18}{8} - \frac{13}{8} = n$
$\frac{5}{8} = n$

So Angie need $\frac{5}{8}$ cups more of butter for the recipe.

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3 years ago

astra-53 [7]

The answer is 3rd one

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3 years ago

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andrew made a scale drawing of the elementary school. The scale of the drawing was 8 centimeters : 3 meters. if the actual lengt

Schach [20]

Answer:i think its 80 cm

Step-by-step explanation:

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3 years ago

Changethe improper fraction into an equal mixed number 15/4

frez [133]

Answer:

15 divided by 4 = 3 3/4

Step-by-step explanation:

First divide 15 on 4 to get 3.75. convert 3.75 to a fraction. 3 will stay as three, and 0.75 will be converted to 3/4. the answer to your question is 3 and 3/4. I hope this was correct. if it was then please mark as brainliest.

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3 years ago

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