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wolverine [178]
3 years ago
5

Thomas is making tea. He adds sugar to water and stirs for a minute, but most of the sugar doesn’t dissolve. Which of the follow

ing could Thomas do to make the sugar dissolve more quickly?
A. heat the water


B. add more sugar


C. stir more slowly


D. use a smaller cup
Mathematics
2 answers:
KonstantinChe [14]3 years ago
5 0

Answer:

the answer is a. hope this helps

tamaranim1 [39]3 years ago
4 0
A, because heat will melt it and all the answers don’t make since
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Expand the expression and combine like terms: 2(−14+r)−(−3r−5)
Serggg [28]
2r-20 is the answer combining the like terms and solving.
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3 years ago
Help please<br><br> .....................
elixir [45]

Answer:

f(-5) = 22

Step-by-step explanation:

All we do is substitute x = -5 into the function.

= -3(-5) + 7

= 15 + 7

= 22

Best of Luck!

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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Aleks04 [339]

Answer:yes

Step-by-step explanation:

(85/136)=.625

(15/24)=.625

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Answer:

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