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sergeinik [125]
3 years ago
12

Why is there no commutative property for subtraction and division

Mathematics
1 answer:
Bezzdna [24]3 years ago
5 0
There is no commutative property for subtraction and division because order does matter. 6 - 5 will not give you the same answer as 5 - 6.
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Max worked 13 hours last week at the grocery store and earned $94.25.If he only worked 5 hours this week, how much money did he
Marrrta [24]
ANSWER: $36.25

Explanation: First find the rate. Divide $94.25 by 13 (hours) to get the rate. Now you know that Max earns $7.25 each hour he works. Multiply his hourly rate by 5 (hours) to get how much Max earns in five hours.
6 0
3 years ago
If 3 pounds of apples costs $7.50, what is the unit rate for cost per pound? What will 9 pounds cost?
inna [77]

Answer:per pound would cost 2.50 and for nine pounds it would cost 22 dollars and 50 cent

Step-by-step explanation:

750 divided by 3=250 just add your point were before five and 7.50 plus 7.50 equals 15 plus 7.50 equals 22.50

3 0
3 years ago
The number 296 is 74 % of what number
uranmaximum [27]
Answer: 296 is 74% of 400.
3 0
2 years ago
Read 2 more answers
The sum of a whole number and twice its square is 21. Find the whole number
I am Lyosha [343]
SOLUTION:

Let whole number = x

x + 2x^2 = 21

2x^2 + x - 21 = 0

2x^2 + 7x - 6x - 21 = 0

x ( 2x + 7 ) - 3 ( 2x + 7 ) = 0

( 2x + 7 ) ( x - 3 ) = 0


2x + 7 = 0

2x = - 7

x = - 7 / 2

OR

x - 3 = 0

x = 3


ANSWER:

Therefore, as 3 is a whole number while - 7 / 2 isn't a whole number, the whole number must be 3.

Hope this helps! :)
Have a lovely day! <3
6 0
3 years ago
A shopkeeper buys a dress for $40
DanielleElmas [232]

Answer:

48 - 40 = $8, there is a $8 dollar increase.

Formula for change of percentage;

changed price

___________ x 100% (100/100)

original amount

Replace those values with the values we found;

40/48 x 100/100 = 20% increase.

4 0
2 years ago
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