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insens350 [35]
3 years ago
10

What lengths are proportional to 4.5 and 1.5

Mathematics
1 answer:
alexgriva [62]3 years ago
8 0
3

1.5 and 4.5 all are divisible by 1.5.  Then you just have to find another number that is as well. I chose 3. Theres also 6, 7.5,9,10.5,12
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What is a cubic polynomial function with zeros 3,3 and -3? show your work.​
Brums [2.3K]

Answer:

Cubic polynomial function with zeros 3,3 and -3 is \mathbf{x^3-3x^2-9x+27=0}

Step-by-step explanation:

We need to find a cubic polynomial function with zeros 3,3 and -3.

If zeros of polynomial are: 3,3,and -3

we can write:

x=3, x=3, x=-3

Or

We can write:

x-3=0, x-3=0, x+3=0

Now, we can write them as:

(x-3)(x-3)(x+3)=0

Multiplying the terms, we can find the polynomial:

(x-3)(x-3)(x+3)=0\\(x(x-3)-3(x-3))(x+3)=0\\(x^2-3x-3x+9)(x+3)=0\\(x^2-6x+9)(x+3)=0\\x(x^2-6x+9)+3(x^2-6x+9)=0\\x^3-6x^2+9x+3x^2-18x+27=0\\x^3-6x^2+3x^2+9x-18x+27=0\\x^3-3x^2-9x+27=0

So, cubic polynomial function with zeros 3,3 and -3 is \mathbf{x^3-3x^2-9x+27=0}

4 0
2 years ago
On February 1, 1977, John deposited $2250 into a savings account paying 5.76% interest, compounded quarterly. If he hasn't made
Travka [436]
John's effective annual rate is about
  (1 +.0576/4)^4 -1 ≈ 5.8856%
According to the "rule of 72", John's money will have doubled in
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John's balance will be $4500 in 1989.

_____
Since you're only concerned with the year (not the month), you don't actually need to determine the effective annual rate. The given rate of 5.76% will tell you 72/5.76 = 12.5 years. The actual doubling time is closer to 12.12 years, so using the effective rate gives results that are closer, but "good enough" is good enough in this case.
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3 years ago
Three more than x is equal to 47. Find x.
sweet [91]

Answer:

45

Step-by-step explanation:

Ion know tbh

8 0
3 years ago
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Marianna [84]

c
because the question does not specify the type of triangle. so the best is a right angled triangle.

6 0
3 years ago
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Jen bought some candy. She bought 1 package containing 6 pieces of candy and "n" packages containing 3 pieces each. Write an exp
PIT_PIT [208]

Answer:

(1 x 6) + 3n

Step-by-step explanation:

Hope this helps!

7 0
3 years ago
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