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zimovet [89]
2 years ago
7

What is 5 1 2 + 2 1 7 ?

Mathematics
2 answers:
Shkiper50 [21]2 years ago
7 0
D is your answer because i did the math
alina1380 [7]2 years ago
4 0

Answer:

769

Step-by-step explanation:

512

+217

____

729

hope this helps

the fraction answer is 7 9/14 lol

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jenna's rectangular garden borders a wall. she buys 80 ft of fencing. what are the dimensions of the garden that will maximize i
FrozenT [24]

Answer:

The  dimensions are x =20 and y=20 of the garden that will maximize its area is 400

Step-by-step explanation:

Step 1:-

let 'x' be the length  and the 'y' be the width of the rectangle

given Jenna's buys 80ft of fencing of rectangle so the perimeter of the rectangle is    2(x +y) = 80

                         x + y =40

                               y = 40 -x

now the area of the rectangle A = length X width

                                                  A = x y

substitute 'y' value in above A = x (40 - x)

                                              A = 40 x - x^2 .....(1)

<u>Step :2</u>

now differentiating equation (1) with respective to 'x'

                                      \frac{dA}{dx} = 40 -2x     ........(2)

<u>Find the dimensions</u>

<u></u>\frac{dA}{dx} = 0<u></u>

40 - 2x =0

40 = 2x

x = 20

and y = 40 - x = 40 -20 =20

The dimensions are x =20 and y=20

length = 20 and breadth = 20

<u>Step 3</u>:-

we have to find maximum area

Again differentiating equation (2) with respective to 'x' we get

\frac{d^2A}{dx^2} = -2

Now the maximum area A =  x y at x =20 and y=20

                                        A = 20 X 20 = 400

                                         

<u>Conclusion</u>:-

The  dimensions are x =20 and y=20 of the garden that will maximize its area is 400

<u>verification</u>:-

The perimeter = 2(x +y) =80

                           2(20 +20) =80

                              2(40) =80

                              80 =80

8 0
3 years ago
Simplify sin(3pi minus x)
Slav-nsk [51]

Answer:

sinx

Step-by-step explanation:

hello :

note :

for all x in ℝ :   1) sin(x+2π) = sinx        2)  sin(π-x) = sinx

in this exercice :

3π - x = 2π+(π - x)

sin(3π - x) = sin(2π +(π - x)) =sin(π-x) = sinx

8 0
3 years ago
shira was riding the screamer when it broke down. her seat was 53 jorizontal feet from the central support pole. What was her se
ki77a [65]

Answer:

The possible solutions are 58 degree, 122 degrees, 302 degrees and 238 degrees

Step-by-step explanation:

Please see the attachment

From the figure, it is evident that

cos AOB = OB/OA = 53/100 = 0.53

Thus, cos-1 (0.53) = 58 degrees

AOB = 58 degree

Also, there are can be other values depending on the quadrants

COB = 180 -58 = 122 degrees

FOB = 360 -58 = 302 degrees

EOB = 180 + 58 = 238 degrees

5 0
3 years ago
Justice hopes to build a fence around his garden he measures and determined that he needs 24 feet of fencing when he arrives at
Sunny_sXe [5.5K]

Answer:

It  will cost  $72 Justice to fence in his garden.

Step-by-step explanation:

Total length of the fencing around the garden =  24 feet

Cost of fencing per inch = $0.25

Now, as we know 1 foot  =  12 inches

⇒  24 feet =  24 x 12 inch  = 288 inches

⇒ 24 feet  =  288 inches

Hence, the total length of  fencing   =  288 inches.

Now, Total cost of Fencing

=Total length of fencing x Cost of fencing par inch

=  288 inches x ($0.25)

=  $ 72

or, the total cost of fencing = $72

Hence, it  will cost  $72 Justice to fence in his garden.

7 0
3 years ago
Find the volume of a cube where the length of each side is 6 centimeters.
Marrrta [24]

hope it will help u..........

6 0
3 years ago
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