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EleoNora [17]
3 years ago
10

What is y=2(x-2)^2-2 in standard form

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
3 0

Answer:

Y= 2x^2-8x+6

Step-by-step explanation:

Hope this help :)

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Find the dimensions of the rectangle with area 256 square inches that has minimum perimeter, and then find the minimum perimeter
mezya [45]

Answer:

Dimensions: A=a\cdot b=256

Perimiter: P=2a+2b

Minimum perimeter: [16,16]

Step-by-step explanation:

This is a problem of optimization with constraints.

We can define the rectangle with two sides of size "a" and two sides of size "b".

The area of the rectangle can be defined then as:

A=a\cdot b=256

This is the constraint.

To simplify and as we have only one constraint and two variables, we can express a in function of b as:

b=\frac{256}{a}

The function we want to optimize is the diameter.

We can express the diameter as:

P=2a+2b=2a+2*\frac{256}{a}

To optimize we can derive the function and equal to zero.

dP/da=2+2\cdot (-1)\cdot\frac{256}{a^2}=0\\\\\frac{512}{a^2}=2\\\\a=\sqrt{512/2}= \sqrt {256} =16\\\\b=256/a=256/16=16

The minimum perimiter happens when both sides are of size 16 (a square).

4 0
3 years ago
An urn contains 12 balls, five of which are red. Selection of a red ball is desired and is therefore considered to be a success.
SVEN [57.7K]

Answer:

2/10

Step-by-step explanation:

8 0
3 years ago
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Need answer ASAP will give BRAINLEST <br><br> Please put a full answer thank you
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Answer:
1. It means they saved $125 in 10 months
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2 years ago
You have a total of 21 coins, all nickles and dimes. The total value is $1.70 Which of the following is the system of linear equ
olga nikolaevna [1]
You need one equation for the physical nickels and dimes, which total to 21:

n+d=21

Secondly, you need one equation for the numerical value of those nickels and dimes. We know nickels are worth $0.05 and dime are worth $0.10:

.05n+.1d=1.70
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3 years ago
I don't know how to do this type of problem and need help !!
maria [59]
It's between the first and second but I think it's the second one .
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3 years ago
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