2 years ago

Evaluate 7a -5b when a =5 and b=4

Mathematics

1 answer:

inessss [21]2 years ago

6 0

Answer:

Step-by-step explanation:

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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

suzy had 10L of water. She wanted to pour an equal amount of water into 5 thermoses. How many liters did she pour into each ther

Liula [17]

She poured 2L into each.

10 / 5 = 2

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3 years ago

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2,000 pencils are being divided into packages of 15. How many pencils will be left over?

Mashcka [7]

You have 133 pencils left.

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