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MAVERICK [17]
3 years ago
14

A restaurant offers 4 kinds of bread, 3 kinds of meat, and 4 kinds of cheese. How many leaves on a tree diagram would represent

all possible combinations of sandwiches?
Mathematics
1 answer:
Fiesta28 [93]3 years ago
6 0
There would be 3. The first one would be with the 4 different types of bread. The second level would have the 3 types of meats branching off from each of the types of bread. The third level would have the 4 different types of cheeses branching off from the each of the different types of meat. Hope this helps!

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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
3 years ago
A shose box measures 15in.by 7in.by 4 an half
Svet_ta [14]
The volume is 472.5in^3.

4 0
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EXTREMELY URGENT GEOMETRY! 15 POINTS!<br><br> PLEASE HELP
zhenek [66]

Answer:

20.3 units

Step-by-step explanation:

AB/CB = BD/AB

9/CB = 4/9

CB = 9×9/4

CB = 81/4 = 20¼ units

20.25 (20.3 units correct to 1 dp)

7 0
3 years ago
...
ICE Princess25 [194]

Answer:-5

Step-by-step explanation:

i could be wrong i used my calculator

4 0
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2x2-3x-5=0 using quadratic formula
saveliy_v [14]
This formula solve by discriminant (D=b^2-4ac)

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