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Law Incorporation [45]
3 years ago
14

What is the equation for 4 times the number of cows plus 2 times the number of ducks is 20

Mathematics
1 answer:
lord [1]3 years ago
5 0

Let c,d be the number of cows and ducks, respectively.

So, 4 times the number of cows is 4c, and 2 times the number of ducks is 2d. Together, they are 4c+2d

This has to equal 20, so the equation is

4x+2d=20

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What are the zeros of f(x) = x2 + 3x – 10?
Nady [450]
Step One
Factor f(x)
f(x) = (x + 5)(x - 2)

Step Two
The zeros occur when either (x + 5) = 0 or (x - 2) = 0

x + 5 = 0
x = -5

x - 2 =0
x = 2

Step 3
Record the zeros
(-5,0) or (2,0) <<<<<< answer.
3 0
3 years ago
The average weight of a mature human brain is approximately 1400 grams. what is the equivalent weight in kilometers? In pounds?
Illusion [34]
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Hope this helps.
7 0
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If 2&gt; -a, then a &lt; -2.<br> True<br> False
Nonamiya [84]

Answer:

False

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−a<2

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a>−2

4 0
3 years ago
I need help on this...how do i do it
Ugo [173]

Answer:

<h2><u><em>D</em></u></h2>

Step-by-step explanation:

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61/111

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61÷111

Then using

Long Division for 61 divided by 111

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6 0
2 years ago
Read 2 more answers
In a regular polygon each interior angle is 140° greater than each exterior angle. Calculate the number of sides of the polygon​
pochemuha

Answer:

18 sides.

Step-by-step explanation:

The interior and exterior angles sum to 180 so:

       I + E = 180

also  I - E = 140       (given)

So, adding to eliminate E:

      2I = 320

I = 160 degrees and the external angle E = 1809 - 160 = 20 degrees.

Since the sum of all exterior angles in a polygon = 360 degrees

- the number of sides = 360 / 20 = 18.

6 0
2 years ago
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