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2 years ago

14

What expression is equivalent to 14/15

1 answer:

likoan [24]2 years ago

4 0

Answer: Divide 0.93333333333

Step-by-step explanation:

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Wat is 7x² + 4x - 5= 0

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Answer and workings in the attachment below.

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3 years ago

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At a concert, 20% of the audience members were teenagers. if the number of teenagers at a concert was 360, what was the total nu

Harlamova29_29 [7]

Answer:

The total number of audience members is 1800.

Step-by-step explanation:

In order to find this, we need to divide the number of teenagers by the percentage share.

360/.2 = 1800

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3 years ago

Ashley bought 2 1/7 lb of tomatoes, 3 2/3 lb of lettuce, and 3 1/3 lb of spinach to make a salad. How many pounds of vegetables

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9 1/7 lb

You can convert the mixed numbers to solve it easier! :)

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2 years ago

Chase invested $83,000 in an account paying an interest rate of 6.3%

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2 years ago

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The average income, I, in dollars, of a lawyer with an age of x years is modeled with the following function:

Alinara [238K]

The answer is 37 years old.

I = -425x² + 45500x -650000
I = 450000

-425x² + 45500x -650000 = 450000
-425x² + 45500x - 650000 - 450000 = 0
-425x² + 45500x - 1100000 = 0

Divide all factors by 25:
- 17x² + 1820x - 44000 = 0

This is quadratic equation (ax² + bx + c = 0)
$x_{1,2} = \frac{-b+/- \sqrt{ b^{2}-4ac } }{2a} = \frac{-1820+/- \sqrt{ 1820^{2}-4*(-17)*(-44000) } }{2*(-17)} = \\ \\ = \frac{-1820+/- \sqrt{3312400-2992000 } }{-34} = \frac{-1820+/- \sqrt{320400} }{-34} =\frac{-1820+/- 566}{-34} \\ \\ 
x_1= \frac{-1820+ 566}{-34}= -37 \\ \\ 
x_2 = \frac{-1820- 566}{-34}=70$

Since, the youngest age is needed, the correct answer is x = 37

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3 years ago