Answer:
Ducks = 8
Horses = 17
Step-by-step explanation:
From the question;
- Total number of animals = 25
- Total number of legs = 84 legs
We are required to determine the number of ducks and horses;
We need to know that;
A duck has two legs while a horse has four legs;
Assuming there were x ducks and y horses
Then;
x + y = 25 ................................Eqn 1
And;
2x + 4y = 84 .............................Eqn 2
Solving the two equations simultaneously we can get the number of each animal.
x + y = 25
2x + 4y = 84
Multiplying the first equation by 2, we get
2x + 2y = 50
2x + 4y = 84
Subtracting the two equations;
2x + 2y = 50
2x + 4y = 84
........................................................
- 2y = -34
y = 17
Solving for x
x = 25 -17
= 8
Therefore; there were 8 ducks and 17 horses in the field
Answer:
25°
Step-by-step explanation:
you take the angles you already know and add them up. subtract that sum with 180° to get x.
100 + 55 = 155
180 - 155 = x
x = 25°
There were 10 stickers in each pack. you first subtract 4 from 24, to get how many finn would have without his friend giving him any and then (I'm assuming he bought 2 packs) divide by 2 to get 10.
Answer:
The second one
Step-by-step explanation:
If you divided all the dimensions by 2 they will al, simplify to the second image
Answer:
2x-10
Step-by-step explanation:
original equation: 2(×-5)
distributive property: 2(x) 2(-5) =2x-10