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Mariulka [41]
3 years ago
15

Old McDonald had a farm. In one pen the old farmer had chickens and bulls together. In that pen there were 40 animals in total,

but there were 130 legs. Can you figure out how many chickens and bulls are in that pen?
Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
8 0

Answer:

There are 15 numbers of chicken and 25 numbers of bulls.

Step-by-step explanation:

The pen had chickens and bulls.  The pen contains 40 animals in total. The number of legs in the pen is 130 .

Let

a = number of chicken

b = number of bull

a + b = 40................(i)

A chicken has 2 legs and a bull has 4 legs.

The total legs can be represented as

2a + 4b = 130...........(ii)

combine the equation

a + b = 40................(i)

2a + 4b = 130...........(ii)

a = 40 - b

insert the value of a in equation(ii)

2(40 - b) + 4b = 130

80 - 2b + 4b = 130

80 + 2b = 130

2b = 130 - 80

2b = 50

divide both sides by 2

b = 50/2

b = 25

Insert the value of b in equation (i)

a + b = 40

a + 25 = 40

a = 40 - 25

a = 15

There are 15 numbers of chicken and 25 numbers of bulls.

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3 years ago
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Blake into her friends are going to an amusement park. The cost of admission to the park is $39.95 per person. Once they're in t
Sindrei [870]

Answer:

143.70 = 3(39.95) + x

where x is the additional fee spent to race the cars at the park

Step-by-step explanation:

Let’s write the complete question first before we solve;

Blake and two of her friends are going to an amusement park. The cost of admission to the park is $39.95 per person. Once they are in the park, Blake and her friends ride the race cars, which require an additional fee. The total amount spent by all three boys is $143.70. Write an equation that can be used to find the additional fee to ride the race cars.

solution;

we are trying to write an equation that could help determine the additional fee used to race cars at an amusement park by a group of friends.

we proceed as follows;

We identify that they are 3, with each spending an amount equal to $39.95 for admission.

now to find the additional fee, we simply multiply the admission fee by 3 and subtract from the total amount spent.

let’s say the additional fee is x

This means;

143.70 = 3(39.95) + x

To get x, we can then open the bracket then take the value to the other side to get x

3 0
3 years ago
Two best friends, Pluto and Goofy, have very different hobbies. Pluto likes to skydive from a height of 24,568 feet. Goofy likes
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Answer:

They are 24, 692 feet aprart

Step-by-step explanation:

Let us assume at the instance we are measuring their position, that Pluto is at the highest point in the air, which is = 24,568 feet, and Goofy is at the lowest point of the sea (that he can go) = 124 feet.

Before we can proceed with the addition, we need to establish a datum, which will serve as the reference point from which the two distances are measured. This definitely is the sea level, because altitude and depth are usually measured above and below sea level.

Pluto's location to the sea level = 24,568 feet

Goofy's Location to the sea level = 124 feet

their distance apart = 24,568 feet + 124 feet =24, 692 feet apart

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nasty-shy [4]

Answer:

Step-by-step explanation:

MX = XN

5r² + 2r + 52 = 4r² + 12r + 27

5r² - 4r² + 2r - 12r + 52 - 27 = 0

r² - 10r + 25 = 0

(r - 5)² = 0

r - 5 = 0

r = 5

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4•5² + 12•5 + 27

4•25 + 60 + 27

100 + 60 + 27

187

The Second one

I hope I helped you.

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The area of manang district is square kilometre is 2,246 find the prime factors of 2246​
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