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luap6897
22.11.2019 •
Mathematics
ms. franco bought $20 calculators for her math class at a discount of 15% on each calculator. how much did she spend for 30 calculators?
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Ответ:
Step-by-step explanation:
MARK BRAINLIEST PLEASE ☺️☺️
First you multiply 20 by .15 and you get 3. Subtract 3 by 20 and you get 17. Now multiply $17 by 30 and you get 510. She spent $510 on 30 calculators
Ответ:
Step-by-step explanation:
Let the price of the room be p
Let the size of the room be s
To find the size of a kitchen that costs $3,824.00 we must first find the relationship between them
The statement
The price of tiling a room varies directly as the size of the room is written as
p = kswhere k is the constant of proportionality
when
p = $4,224.00
s = 264 square feet
Substitute the values into the expression to find k
That's
4224 = 264k
Divide both sides by 264
k = 16
So the formula for the variation is
p = 16swhen
p = 3824
s = 239
The final answer is
239 square feet
Hope this helps you