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Vadim26 [7]
3 years ago
10

Name this set of numbers which -2/5 belongs ?

Mathematics
1 answer:
Damm [24]3 years ago
5 0
That belongs in the rational #s
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A shopper paid $2.52 for 4.5 pounds of potatoes, $7.75 for 2.5 pounds of broccoli and $2.45 f0r 2.5 pounds of pears. What is the
denis23 [38]
Unit rate refers to how much the buyer paid per unit. Let’s do the math:

$2.52 for 4.5 pounds of potatoes
Divide $2.52 by 4.5
The shopper paid 56 cents per pound of potatoes.
Now $7.75 spent for 2.5 pounds of broccoli.
Divide $7.75 by 2.5.
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The shopper will spend 98 cents per pounds of pears.
Please vote my answer brainliest! Thanks.
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4 years ago
The basketball game started at 7:05 P.M. and ended at 8:00 P.M. How long did the basketball game last?
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55 minutes

Step-by-step explanation:

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What is the area of the following circle?
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Haley bought a membership to an online photo-sharing site for $12. After purchasing the membership, she wanted to buy several pr
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50 Prints

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7 0
3 years ago
Part 1
Ann [662]

Answer:

Part 1. \dfrac{x+1}{2x}=\dfrac{x^2-7x+10}{4x}.

Part 2. Solutions: x_1=1,\ x_2=8.

Extraneous solution: x=0.

Step-by-step explanation:

Part 1. You are given the equation

\dfrac{1}{2}+\dfrac{1}{2x}=\dfrac{x^2-7x+10}{4x}.

Note that

\dfrac{1}{2}+\dfrac{1}{2x}=\dfrac{x+1}{2x},

then the equation  rewritten as proportion is

\dfrac{x+1}{2x}=\dfrac{x^2-7x+10}{4x}.

Part 2. Solve this equation using the main property of proportion:

4x\cdot (x+1)=2x\cdot (x^2-7x+10),\\ \\2x(2x+2-x^2+7x-10)=0,\\ \\2x(-x^2+9x-8)=0.

x cannot be equal 0 (it is placed in the denominator of the initial equation and denominator cannot be 0), so x=0 is  extraneous solution to the equation.

Thus,

-x^2+9x-8=0,\\ \\x^2-9x+8=0,\\ \\x_{1,2}=\dfrac{9\pm\sqrt{(-9)^2-4\cdot 8}}{2}=\dfrac{9\pm7}{2}=1,\ 8.

3 0
3 years ago
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