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Leviafan [203]
3 years ago
5

7 x [(7+7) divided 7] =

Mathematics
2 answers:
galben [10]3 years ago
6 0

BIDMAS

Step-by-step explanation:

FIRST DO 7+7÷7 AND TIMES THE ANSWER BY 7

Serga [27]3 years ago
4 0

Answer:

14

Step-by-step explanation:

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10+the actual quantity of x=7 would be one of the 4 awnser choices you have made

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Use the distributive property to write the following expression without parentheses.  
I am Lyosha [343]

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-12x+12y

Step-by-step explanation:

-\dfrac{3}{5}(20x-20y)=\\\\-\dfrac{3}{5}(20x)+-\dfrac{3}{5}(-20y)=\\\\-12x+12y

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What is the common factor among xy2 and x2y ?
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7 0
2 years ago
Please help me! Need answer quick!
aksik [14]

Let h = height of triangle


h^2 + 12^2 = 15^2


h^2 + 144 = 225


h^2 = 225 - 144



h^2 = 81


sqrt{h^2} = sqrt{81}


h = 9 cm


For part B, we need to find surface area because it represents the perimeter of this 3-D figure. The formula needed is SA = B + LA.


1. First find the lateral area.


LA = perimeter of triangle • height


LA = ph


p = 15 + 15 + 24


p = 30 + 24


p = 54 cm


LA = (54)(9)


LA = 486 cm^2


2. We now find the base of each triangle. This is found by finding the area of each triangle and multiplying by 2.


A = (1/2)bh


A = (1/2)(24)(9)


A = 108 cm^2


A = 2•108 cm^2


A = 216 cm^2 = our B in the surface area formula.


SA = B + LA


SA = 216 cm^2 + 486 cm^2


SA = 702 cm^2


The amount of cardboard needed is 702 cm^2.






6 0
3 years ago
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