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IgorC [24]
2 years ago
10

PRACTICE 1

Mathematics
1 answer:
kari74 [83]2 years ago
8 0

Answer:

ones

Step-by-step explanation:

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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
Explain how to tell if a number can. be divided by 10 evenly
maxonik [38]
Every number that has 0 as last digit and isn't decimal number, can be divided by 10 without remainder. It works for both positive or negative numbers. If last digit is different from 0, you will have remainder equal to that last digit. Even number 0 is divisible by 10 (the answer is 0 of course) because its last and only digit is 0. 
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3 years ago
A school cafeteria makes cheese sauce for macaroni using 15 cups of swiss cheese 17 cups of cheddar cheese. Perry tries to make
vladimir2022 [97]

Cafeteria ratio of Swiss cheese to cheddar cheese is 15:17.

Perry’s ratio of Swiss chess to cheddar cheese is 5:7.

Wrong ratio because 5 * 3 = 15 but 7 * 3 does not equal 17.

6 0
3 years ago
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Misha’s hamster weighed 0.845 kilograms. About how much does it weigh, rounded to the nearest hundredth?
eimsori [14]

Answer: 0.85 kilograms

Step-by-step explanation:

8 0
3 years ago
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What is the x-coordinate of the point that can be plotted on the graph between (6, 2) and (12, 4) that is part of this set of eq
vampirchik [111]

Answer:

zero is the point between ( 6,

2 )and( 12,4)

8 0
2 years ago
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