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Alekssandra [29.7K]
3 years ago
7

If a:b = 3:4 and b:c= 5:7, find a:c. WORKING OUT NEEDED.

Mathematics
1 answer:
mixer [17]3 years ago
5 0

Answer:

3:7

Step-by-step explanation:

a:b

a=3

b=4

b:c

b=5

c=7

a:c

3:7

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Write a third degree polynomial function that has real zeros -1, -2 and 4
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Answer:

f(x) = x^{3}  - x^{2}  -  10x  -8

Step-by-step explanation:

All you have to do is multiply (x + 1)(x + 2)(x - 4)

You should get x^{3}  - x^{2}  -  10x  -8

So,  f(x) = x^{3}  - x^{2}  -  10x  -8

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Wilhelmina wrote a check for $72 to pay her monthly Internet bill, but when
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Answer:

her bank statement will show that she has $144 less than her checkbook balance

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let the amount of money in the bank before writing the check be x

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However, the bank correctly records the debit of the $72, resulting  a balance of: $(x-72)

Hence compared to her checkbook,  the bank records will show an amount difference of :

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A large dining room table is in the shape of a semi circle diameter 12 feet. What is the square feet closest to the area ? Radiu
Zarrin [17]
No, the radius is not 3.14 .  The radius is 1/2 of the diameter . . .  That's 6 feet.
If you see 3.14 on the sheet, then that's the number you're supposed to use for pi .

The area of any circle is (pi) x (radius squared).
If the table were a full circle, its area would be (pi) x (6 squared) = 36 pi square feet.

But it's only half of that . . . 18 pi = (18) x (3.14) = <u>56.52 square feet</u>.

That's called the "area" of the table, not the "square feet" of the table.

And another thing:   I see you're asking for the "closest" number.   Don't ask me
how I know this, but I'm pretty sure that right under this question wherever you
copied it from, there's a list of choices, and when you posted the question, for
some reason you decided not to share the list.
7 0
3 years ago
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