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krek1111 [17]
3 years ago
8

What is to compatible 287-162

Mathematics
1 answer:
WARRIOR [948]3 years ago
6 0
Well 287-162=125 so, what numbers also equal the same?
well, lets say you had 469 cookies and only 344 were eaten. how many are left? 125 
So 469-344 is = to 287-162
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barxatty [35]
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3 years ago
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What 2 number when you multiply is 14 and when added is -9
wlad13 [49]

Answer: -7 -2


Step-by-step explanation:-7 + -2=9 -7×-2=14


4 0
3 years ago
The average of their maximum speeds was 260 km/h. If doubled Malcolm’s maximum speed would be 80 km/h more than Ravi’s maximum s
san4es73 [151]

Answer:

Malcolm’s maximum speed is 200 km/h and and Ravi’s maximum speeds is 320 km/h.

Step-by-step explanation:

Let x and y are the maximum speeds ( in  km / h ) of Malcolm and Ravi respectively,

Then according to the question,

\frac{x+y}{2}=260

\implies x + y = 520-----(1)

Again according to the question,

2x = y + 80

\implies 2x - y = 80----(2)

Equation (1) + equation (2),

3x = 600

⇒ x = \frac{600}{3} = 200,

From equation (1),

200 + y = 520

⇒ y = 520 - 200 = 320

Hence,  Malcolm’s and Ravi’s maximum speeds are 200 km/h and 320 km/h respectively.

7 0
3 years ago
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ira [324]
It depends on your goals.

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3 0
3 years ago
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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
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