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tatuchka [14]
3 years ago
9

What is the sum of the exterior angles

Mathematics
1 answer:
Afina-wow [57]3 years ago
8 0

The sum of the exterior angles of a triangle needs to equal 360 degrees.

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Help me this question
lubasha [3.4K]

Answer:

(a) 218.6 N

(b) 97.14 N

Step-by-step explanation:

When the system is in equilibrium, the net torque on the system is zero.

AC = 1.5 m, CD = 2.3 m, DB = 5 - 1.5 - 2.3 = 1.2 m

Let the centre of gravity of plank is at G.

AG = 2.5 m, CG = 2.5 - 1.5 = 1 m, GB = 2.5 m

(a) Let the reaction at C is R and at D is R'.

R + R' = 29 x 9.8 = 284.2 N ... (1)

Take the torque about C.

29 x 9.8 x CG = R' x GD

29 x 9.8 x 1 = R' x 1.3

R' = 218.6 N

(b) Take the torque about D.

6 x 9.8 x AD = R x CD

6 x 9.8 x (1.5 + 2.3) = R x 2.3

R = 97.14 N

8 0
3 years ago
i’m order for a graph to be proportional it must cross through the origin. A.true B.false
Gelneren [198K]

Answer:

True

Step-by-step explanation:

Key idea: the graph of a proportional relationship is a straight line through the origin.

8 0
3 years ago
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Please help answer the first 2 boxes for brainslt <br><br> &gt; for brainslt
katen-ka-za [31]
Where is this at?

Could you send it in comments here or something?
6 0
2 years ago
The fourth grade class at hart school is having a Valentine’s Day party. Each student will receive an 8-oz.cup of juice. If ther
avanturin [10]

Answer:

6 bottles of juice

Step-by-step explanation:

1. find the total amount of juice needed (number of students multiplied by the amount of juice): 48*8 = 384

2. find the number of bottles needed (total amount of juice divided by amount in each bottle): 384/64 = 6

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3 years ago
What is the slope of this equation please help me
galina1969 [7]
The slope is always change in y value over change in x value so if you pick any 2 points on the line you’ll see that the slope is 30/40 and that simplified is 3/4 so the slop is 3/4
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3 years ago
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