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Vitek1552 [10]
3 years ago
6

at 12pm there are 855 people in the zoo by 5pm 4/5 of the children have left and ³/₄ of the adults have left. There are now 36 m

ore children than adults in the zoo.working out
Mathematics
1 answer:
12345 [234]3 years ago
8 0

Answer:

300 Adults 555 Children

Step-by-step explanation:

What we know:

Firstly, at 5pm there were 36 more Children (C) than Adults (A)

So.....C = A + 36

Secondly, at 12pm there were 5 x more Children and 4 x more Adults and the total was 855

So 4A + 5C = 855

——-

Now use ‘C = A + 36’ and get rid of all ‘C’ in the second equation.....

4A + 5C = 855

becomes......

4A + 5 (A + 36) = 855

Multiply the brackets (5 x A) and (5 x 36):

4A + 5A + 180 = 855

Take off 180 from both sides:

4A + 5A = 675

Therefore 9A = 675

Divide by 9:

A = 75

We know C is A + 36

C = 111

At 5 pm - A = 75 and C = 111

Therefore at 12:

There were 5 x C = 555

And 4 x A = 300

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3 years ago
What is the answer to A+5b=c for b? Im stuck
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3 years ago
Read 2 more answers
1. for what constant k must f(k) always equal the constant term of f(x) for any polynomial f(x) 2. If we multiply a polynomial b
DIA [1.3K]

Answer:

1. k=0

2. yes, result is still a polynomial.

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Step-by-step explanation:

1. for what constant k must f(k) always equal the constant term of f(x) for any polynomial f(x)

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3. if deg(f+g) is less than both deg f and deg g, then must f and g have the same degree?

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5 0
4 years ago
What is the value of the fourth term in a geometric sequence for which a=15 and r= 1/3
Andreyy89

Answer:

Step-by-step explanation:

hello :

the n-ieme term is : An=A1×r^(n-1)

A1 the first term       r : the common ratio

in this exercice : A1 =15        r = 1/3      n = 4

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3 years ago
Please help me answer this question!!!
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Answer:

19

Step-by-step explanation:

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also:

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9x = 171 divide both sides by 9

x = 19

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2 years ago
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