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Harman [31]
2 years ago
7

HELPP please.. please pleaae

Mathematics
2 answers:
leva [86]2 years ago
7 0

Answer:

Hey it's me again the life saver ;)

To find b we can use the linear pair property but since only 1 angle is given, we owuld need at least 2 angles on this situation to find b so, to do that we are first going to find a

a=>

53 + 47 + a = 180

a=180 - 100

a=80°

Now to find b=>

80 + 69 + b =180 (Because of Linear pair property)

b = 180-149

b=31°

Now that we have got b, to solve c, we can again use the sum of all angles in a triangle are 180°

c=>

31 + 85 + c =180

c=180 - 116

c=64

Hope it helps

Zinaida [17]2 years ago
6 0

Answer:

A=80

B=31

C=64

Step-by-step explanation:

A, 69, and b will equal 180 since it forms a straight line

A+69+b=180

to solve for A we subtract 53+47 from 180 and get 80

80+69+b=180

to get B we subtract 80+69 from 180 and get 31

to get c we add 85+b and subtract it from 180 getting c=64

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Answer:

13.4feet

Step-by-step explanation:

The set up forms a right triangle.

Given

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Required

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Using the pythagoras theorem

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l = 13.42 feet

Hence the length of the ramp to the nearest tenth is 13.4feet

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Pls help it is urgent .A trader bought a plate for 120 naira and sold it for 168 naira.What is his percentage profit.
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Answer:

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3 years ago
Eights rooks are placed randomly on a chess board. What is the probability that none of the rooks can capture any of the other r
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Answer:

The probability is \frac{56!}{64!}

Step-by-step explanation:

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For a favourable case, you need one rook on each column, and for each column the correspondent rook should be in a diferent row than the rest of the rooks. A favourable case can be represented by a bijective function  f : A \rightarrow A , with A = {1,2,3,4,5,6,7,8}. f(i) = j represents that the rook located in the column i is located in the row j.

Thus, the total of favourable cases is equal to the total amount of bijective functions between a set of 8 elements. This amount is 8!, because we have 8 possibilities for the first column, 7 for the second one, 6 on the third one, and so on.

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\frac{8!}{64 \choose 8} = \frac{8!}{\frac{64!}{8!56!}} = \frac{56!}{64!}

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What is the value of y when x=3 in this equation y=2x+2
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