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alukav5142 [94]
2 years ago
11

Farmer rusty nales has a total of 25 chickens and cows on his farm. How many of the aches animals does he have if all together t

here are 76 legs,
Write a system of equations for each equation
Solve using substitution or elimination
Mathematics
1 answer:
emmainna [20.7K]2 years ago
8 0

Answer:

13 cows, 12 chickens

Step-by-step explanation:

Total number of animals= 25

Total number of legs= 76

Let the number of cows be x and the number of chickens be y.

x +y= 25 -----(1)

Since each cow has 4 legs and each chicken has 2 legs,

4x +2y= 76 -----(2)

The second equation can be simplified by dividing both sides of the equation by 2:

2x +y= 38 -----(3)

Let's solve by elimination!

(3) -(1):

2x +y -(x +y)= 38 -25

Expand:

2x +y -x -y= 13

x= 13

Substitute x= 13 into (1):

13 +y= 25

y= 25 -13

y= 12

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Ben is 4 times old as ishaan. 6 years ago, Ben was 6 times as old as ishaan <br> How old is Ben now?
SpyIntel [72]

Answer:

60years

Step-by-step explanation:

let Ben age = x

ishaan age = y

Ben is 4 times old as ishaan:

x=4y ..........equation (1)

6 years ago

Ben age = x-6

Ishaan age = y-6

x-6=6(y-6)

x-6=6y-36

x=6y-36+6

x=6y-30..........equation (2)

equating equation(1) and (2)

4y=6y-30

4y-6y=-30

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substituting the value of y into equation (1)

x=4y

=4*15

=60

Ben age now =60years

7 0
3 years ago
Use the model to solve for x.
Igoryamba

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Shouldn't there be a picture if we're told to reference the model?

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2 years ago
14 POINTS PLEASE HELP
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Step-by-step explanation:

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3 years ago
A rock falls from rest a vertical distance of 0.72 meters to the surface of a planet in 0.63 seconds. The magnitude of the accel
Andreas93 [3]

Answer:

3.63 meter/sec²

Step-by-step explanation:

When a rock fall from a height h with initial velocity u and the rock reaches the surface in t seconds the expression that represents this is

h = 4t + \frac{1}{2} gt²

Where g is the acceleration due to gravity

Here h = 0.72 meters

        u = 0

        t = 0.63 seconds

from the given formula

0.72 = 0 ×(0.63) + \frac{1}{2} g(0.63)²

0.72 = \frac{1}{2} g(0.63)²

g = \frac{2\times0.72}{(0.63)^2}

= 3.63 meter/sec²

3 0
2 years ago
Read 2 more answers
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