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matrenka [14]
2 years ago
11

Tracy has a dozen doughnuts. julius gives her 6 more. tracy and julius then eat a of 3 doughnuts.

Mathematics
2 answers:
makkiz [27]2 years ago
8 0
9 i hope this helps . your welcome!!
BlackZzzverrR [31]2 years ago
5 0

Answer:

9

Step-by-step explanation:

12-6+3= 9

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Mr. Wayne sells calculators. He marks up every item with a profit of 25%. Let x be his cost for a calculator. A. Write an expres
Leona [35]

Answer:

Step-by-step explanation:

%profit = selling price - cost price/cost price * 100

If Mr. Wayne marks up every item with a profit of 25% and x be his cost for a calculator, the expression for the selling price can be gotten by substituting the parameters into the formula;

25 = sp-cp/cp * 100

25/100 =  sp-x/x

0.25 = sp-x/x

cross multiply

0.25x = sp-x

add x to both sides

0.25x+x = sp-x+x

1.25x = sp

selling price = 1.25x

<em>Hence an expression for the selling price of the calculator is 1.25x</em>

<em></em>

b) If Mr wayne paid $25, the selling price is derived by substituing x = $25 into the expression in (a)

selling price = 1.25x

selling price = 1.25($25)

selling price = $31.25

c) If the selling price is $86, to get the cost of the calculator, substitute the selling price into the expression in (a)

selling price = 1.25x

$86= 1.25x

x is the cost price of the calculator

divide both sides by 1.25

$86/1.25= 1.25x/1.25

x = $68.8

<em>Hence Wayne paid $68.8 for a calculator that he sells for $86.</em>

8 0
2 years ago
2 1/2 1 1/16 = 3 1/16 3 1/2 3 9/16 3 3/16
amm1812
2 1/2     = 2 8/16

so

2 8/16  + 1 1/16    = 3 9/16

The answer is the third option



3 0
3 years ago
THIS IS PART B So plz right answer
SIZIF [17.4K]

Answer:

that is confusing

Step-by-step explanation:

6 0
2 years ago
What is the product of two integers that equal -21
earnstyle [38]

This is the answer 7 x -3


7 x -3 = -21

8 0
3 years ago
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Y=4x^2-36 solve the following quadratic function by utilizing the square root method<br><br> x=?
Luda [366]

Answer:

This ans is easily solved by using algebraic identities a²- b² = (a+b) (a-b)

Step-by-step explanation:

1. convert into Identity

2. solve quadratic equation that formed.

7 0
2 years ago
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