The 3 inside angles of a right angled triangle are in the ratio 7;18;11. The smallest angle is 35. work out angle ab b c

Mathematics

2 answers:

AfilCa [17]3 years ago

7 0

Sum of interior angles of a triangle = 180

ratio 7:18:11

7+18+11 = 36

180 / 36 = 5

7 x 5 = 35

18 x 5 = 90

11 x 5 = 55

answer

35, 90 and 55

Margaret [11]3 years ago

5 0

Answer:

The angles are 35, 90 and 55

Step-by-step explanation:

Since you mentioned that it is a right triangle, you know that one of them is 90, and the other 35. You then add 90 and 35, getting 125. You subtract 125 from 180 (all triangles are 180 degrees) and get 55

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2. The length of a rectangle exceeds its breadth by 5m.If the perimeter of the rectangle is 74m,find the length and breadth of t

AURORKA [14]

Step-by-step explanation:

length = breadth + 5

the perimeter is a rectangle is

2×length + 2×breadth

in our case

2×length + 2×breadth = 74

so, we use the first equation in the second equation :

2×(breadth + 5) + 2×breadth = 74

2× breadth + 10 + 2× breadth = 74

4×breadth = 64

breadth = 16 m

length = breadth + 5 = 16 + 5 = 21 m

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2 years ago

The area of a rectangle is 63m squared,and the length of the rectangle is 5 m more than twice the width.Find the dimensions of t

Natalija [7]

Given:
Area(A)= 63m^2
Length (L)= 2W+5
Width (W)=?

A=LxW
63=(2W+5)(W)
63=2W^2 + 5W
0=2W^2+5W-63
0=(2W-9)(W+7)
2W-9=0 then W=4.5 and W+7=0 then W=-7
Can only use 4.5 since it is positive and distance is positive.
W= 4.5 m
L=2W+5=2 (4.5)+5=9+5=14m

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4 years ago

I need help please.:)

lidiya [134]

Answer:

46.66...% Males.

Step-by-step explanation:

Total males: 14

Total females: 16

Overall total: 30

14 ÷ 30 = 0.466... x 100 = 46.66%

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