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Ymorist [56]
3 years ago
5

Multiplying a number by 4/5 then dividing by 2/5 is the number same as multiplying by what number ?

Mathematics
1 answer:
Citrus2011 [14]3 years ago
8 0

Answer:

2

Step-by-step explanation:

When we multiply a number by \frac{4}{5} and then we divide by \frac{2}{5} we get

\displaystyle \frac{\frac{4}{5}}{\frac{2}{5}} =\frac{4}{5}*\frac{5}{2}=2

So, both operations are equivalent to multiply by 2

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Answer:

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8 0
3 years ago
Juan was given a gift card for a coffee shop. Each morning, Juan uses the card to buy one cup of coffee. Each cup of coffee cost
Black_prince [1.1K]

Answer:

A=30-2x

Step-by-step explanation:

Cost of one cup of coffee=$2

The original amount of money on the gift card= $30

Juan's expenses in buying coffee, after x morning are \$2\times x.

The amount of money left, A, on the card = (Original amount) - (Total expenses)

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7 0
3 years ago
16x 2 + 8x - 15 Mathematics?
Gala2k [10]
If you're factoring, your answer is

(4x - 3)(4x + 5)

You'll work it out this way:

16x^2 + 8x - 15

Since there's no GCF here, you multiply the first and third terms, giving you -240. Your next step is to find two numbers that have a sum of 8 and a product of -240. These numbers are 20 and -12. Plug those in and you've got:

16x^2 + 20x - 12x - 15

From here you divide it into two binomials. These are (16x^2 + 20x) and (-12x - 15).
When you take out the greatest common factors (4x and -3), they become:

4x(4x + 5) - 3(4x + 5)

Then you group what's outside of the parentheses together (4x - 3)
And bring what's inside of the parentheses down (4x + 5).
This brings your answer to

(4x - 3)(4x + 5)
5 0
3 years ago
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kicyunya [14]
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8 0
3 years ago
Read 2 more answers
How many stamps that are 1.5 inches long and 1.5 inches wide will fit on a piece of paper that is 9 inches wide and one foot lon
Soloha48 [4]
Divide the paper which is 21 inches (12+9) by 1.5 and you have your answer which is 14

4 0
3 years ago
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