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vesna_86 [32]
3 years ago
8

Expanded form of 3(4x+5y)

Mathematics
1 answer:
PIT_PIT [208]3 years ago
3 0
= 12x + 15y because 3 x 4x = 12x and 3 x 5y = 15y
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Step-by-step explanation:

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Carly bought one one yard of fabric, convert the<br> measurement to centimeters.
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David y Almudena tienen entre los dos 225 euros. Calcula cuánto dinero tiene cada uno si Almudena posee 75 euros más que David.
Misha Larkins [42]

David and Almudena have between the two 225 euros. Calculate how much money each has if Almudena has 75 euros more than David.

For this case we propose a system of equations:

x: Let the variable that represents Almudena's amount of money

y: Let the variable that represents David's amount of money

According to the statement we have:

x + y = 225\\y + 75 = x

Substituting the second equation into the first:

y + 75 + y = 225\\2y + 75 = 225\\2y = 225-75\\2y = 150\\y = \frac {150} {2}\\y = 75

We find the value of the variable x:

x = 75 + 75 = 150

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David has 75 euros

Answer:

Almudena has 150 euros

David has 75 euros

3 0
4 years ago
PLEASEE HELP ASAP!!!!!
horrorfan [7]
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For B, you take 40% of 31.50 and add it to 31.50. (31.50 + (31.50 x 0.4).

This is all I can give for now. Glad to help you!
3 0
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Answer:

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Step-by-step explanation:

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