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kumpel [21]
3 years ago
7

PLEASE HELP ASAP! I WIL MARK AS BRAINLIEST FOR THE FIRST ANSWER!! A zoo has 15 Emperor penguins. The Emperor penguins make up 30

, percent of all the penguins at the zoo. How many penguins live at the zoo? I will give brainliest for the first one answered.
Mathematics
1 answer:
svp [43]3 years ago
5 0

Answer:

50 penguins live at the zoo

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The Johnson Farm has 500 acres of land allotted for cultivating corn and wheat. The cost of cultivating corn and wheat (includin
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Answer:

He should plant 100 acres of corn and 400 acres of wheat.

Step-by-step explanation:

This problem can be solved by a siple system of equations.

]x denotes the number of acres of corn

y denotes the number of acres of wheat

Building the system:

The Johnson Farm has 500 acres of land allotted for cultivating corn and wheat. This means that:

x + y = 500

The cost of cultivating corn and wheat (including seeds and labor) is $42 and $30 per acre, respectively. Jacob Johnson has $16,200 available for cultivating these crops. This means that:

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1) x + y = 500

2) 42x + 30y = 16,200

I am going to write y as a function of x in 1), and replace in 2). So:

x + y = 500 means that y = 500-x

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