Find the value of expression m(m-n) for m=3 and n=1 I need the ANSWER ASAP
1 answer:
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Answer:
- 7-5 => 2
- -7+5 => -2
- -7-5 => -12
- 7-(-5) => 12
Step-by-step explanation:
Lets solve the expressions one by one
<u>1. 7-5</u>
we can see that it is simple subtraction. A smaller number is being subtracted from a large number.
So the answer is 2
<u>2. -7+5</u>
There are two numbers with different signs. When there is a number with plus and a number with minus both quantities are subtracted but the larger quantity determines the sign of the answer.
In this case, 7 is larger and has negative sign, the answer will be -2
<u>3. -7-5</u>
When there are two numbers with minus sign they are added but the answer has the minus sign with it.
So the answer will be: -12
<u>4. 7-(-5)</u>
When minus is multiplied with minus it converts to positive
So
Hence,
- 7-5 => 2
- -7+5 => -2
- -7-5 => -12
- 7-(-5) => 12
Answer:
A) The selling price for each necklaces is $8.625
B) The profit mark in each necklaces is 15%
Step-by-step explanation:
Given as :
The total cost of two necklaces = c.p = $15
The markup percentage for the necklaces = m = 15%
Let The selling price for both necklaces = s.p
A ) <u>Now, From markup method</u>
m% =
or, 15% =
or, 15% = - 1
or, = 1 + 15%
or, = 1 +
or, =
or, =
∴ s.p =
I.e s.p = $17.25
So, selling price of two necklaces = s.p = $17.25
or, selling price of one necklaces = s.p = = $8.625
Hence, The selling price for each necklaces is $8.625
<u>Now, Again</u>
B) ∵ The total cost of two necklaces = c.p = $15
So, The cost price of one necklaces = = $7.5
∴ profit% for each necklace =
i.e profit% for each necklace =
Or, profit% for each necklace =
Or, profit% for each necklace = 0.15
So, The profit make in each necklaces = 15%
Hence, The profit mark in each necklaces is 15%
Answer