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slavikrds [6]
2 years ago
10

Pls help (pic above)

Mathematics
2 answers:
ludmilkaskok [199]2 years ago
7 0

Answer: C

Commutative property of addition.

Step-by-step explanation:

vazorg [7]2 years ago
6 0

Answer:

Line 1 to lin2 2= I think D or maybe A.. Mainly D

line 2 to line 3= A

Step-by-step explanation:

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The roof of the building shown below has a span of 48 feet. The rafters upon which the roof is laid are 30 feet long, including
anyanavicka [17]

Solution :

Given :

Span of the roof = 48 feet

Length of the rafter = 30 feet (including the 4 feet overhung)

So, for the 30 feet long rafter, 26 feet will be rafter length from the high point of the roof to the edge of the roof and 4 feet will be the roof overhung.

Therefore, the horizontal span per rafter is

$=\frac{48}{2}$

= 24 feet

a). So the rise of the roof is $= \sqrt{(26)^2-(24)^2}$  

                                         = 10 feet

b). Pinch of the roof is $=\frac{\text{rise}}{\text{run}}$

                                     $=\frac{10}{24}$

                                     $=\frac{5}{12}$

c). The percent of the roof used as overhung is

     $=\frac{4+4}{60}\times 100$

     $=\frac{80}{6}$

       = 13.33 %

8 0
2 years ago
Who could help me on the last part
anyanavicka [17]

Step-by-step explanation:

X^a times X^b = X^a + b

so 4x times 6x = 24x^(1+1)

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Answer:

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Step-by-step explanation:

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