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Alex787 [66]
2 years ago
11

PLEASEEE HELP WORTH 30 AND WILL GIVE CROWN

Mathematics
2 answers:
Oksi-84 [34.3K]2 years ago
8 0

C.....................

natka813 [3]2 years ago
4 0

Answer:

1 and 5

Step-by-step explanation:

it is shown in the picture

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the difference between the two numbers is 4. the quotient of the two numbers is 2. what is the two numbers
Gnoma [55]
Four and eight, I hope this helped!
8 0
3 years ago
The cost of 12 pounds of apples costs $35.50. What is equation for the cost in dollars, d, for the cost of a pound, p of apples
eduard

Answer:

12p = 35.50d

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

8 0
2 years ago
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Find the dimensions of the rectangle of largest area that can be inscribed in a circle of radius r. width units height units
dmitriy555 [2]

This question is incomplete, the remaining part of the question is upload as an image alongside this answer.

Answer:

Width = 2x = 2( r/√2 ) =  √2 r units

Height = 2y = 2( r/√2 ) =  √2 r units

Step-by-step explanation:

From the Figure on the image; lets consider the circle of radius r, centered at the origin.  

let ABCD be the largest rectangle that can be inscribed inside the circle.  

Let the half width of the rectangle be x, then in right triangle ONB using Pythagorean theorem,  

half height of rectangle y = √(r² - x²)

Thus the width of the inscribed rectangle = 2x and height of the inscribed rectangle = 2√(r² - x²)

thus the area of the inscribed rectangle = length × width

⇒ A(x) = 2x(2√(r² - x²))

⇒ A(x) = 4x√(r² - x²)  

now in order to maximize the area, we find critical points.

so we find the derivative and set that zero, that is Ai(x) = 0.

so using product rule, we get

A'(x) = 4x × ( -2x / 2√(r² - x²) ) + ( 4 × √(r² - x²)  )

A'(x) = ( -4x² / √(r² - x²) ) + ( 4√(r² - x²)  )

Now for critical points, set A'(x) = 0

so

( -4x² / √(r² - x²) ) + ( 4√(r² - x²)  ) = 0

( 4x² / √(r² - x²) ) =  ( 4√(r² - x²)  )

x² = r² - x²

2x² = r²

x² = r²/2

x = ±√(r²/2)

Now since x represent the with, it cannot be negative, Thus

x = r/√2

hence

y = √(r² - x²) = √(r² -  r²/2) = √(r²/2) =  r/√2

Therefore, the dimensions of the rectangle of largest area will be;

Width = 2x = 2( r/√2 ) =  √2 r units

Height = 2y = 2( r/√2 ) =  √2 r units

6 0
2 years ago
What number is 80% of 860?
pentagon [3]
80% of 860 is 688
860 x 0.8 =

688
4 0
3 years ago
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Translate the sentence into an Intequality<br><br><br> Eight subtracted from y is greater than 25
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Answer:

8-y<25 hope this answers it

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