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Alona [7]
3 years ago
13

Hello there!

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
7 0

Answer:

4. dy/dx = -2

8. dy/dx = 1/2 x^(-3/2)

10/ dy/dr = 4 pi r^2

Step-by-step explanation:

4.  y = -2x+7

dy/dx = -2(1)

dy/dx = -2

8.  y = 4 - x^-1/2

 dy/dx =  - (-1/2x^ (-1/2-1)

 dy/dx = 1/2 x^(-3/2)

10.  y = 4/3 pi r^3

dy/dr = 4/3 pi  (3r^2)

dy/dr = 4 pi r^2

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Please help me I am super confused I would really appreciate it ♥️♥️
tamaranim1 [39]

Answer:

The answer would be f(x)= 710·4^t

Step-by-step explanation:

It would be greatly appreciated if you gave me the brainlest

6 0
3 years ago
Read 2 more answers
Is EFGH below a rectangle
poizon [28]

Answer:

  D. No, because EFGH is a parallelogram but it’s diagonals are not congruent

Step-by-step explanation:

The differences between the end points of the diagonals are ...

  F -H = (1, 1) -(2, -5) = (1 -2, 1 -(-5)) = (-1, 6)

  G -E = (4, -2) -(-1, -2) = (4 -(-1), -2 -(-2)) = (5, 0)

The length of FH is more than 6, the length of GE is exactly 5. The diagonals are different length, so the figure cannot be a rectangle.

__

The midpoints of the diagonals will be in the same place if the sum of their end points is the same. (Dividing each sum by 2 gives the midpoint of that segment.)

  F+H = (1, 1) +(2, -5) = (3, -4)

  G+E = (4, -2) +(-1, -2) = (3, -4)

The diagonals bisect each other (have the same midpoint), so the figure is a parallelogram.

EFGH is a parallelogram, but not a rectangle: its diagonals are not congruent.

3 0
2 years ago
Please help sorry if it’s a little blurry! I’ll mark brainliest if you tell me why you got that answer.
sergij07 [2.7K]

Answer:

Hi! Saw your comment saying you got it, congrats! I hope you are having an amazing day/night and I wish you luck with the rest of your studies! I hope you don't mind that I use this for some points! <3

3 0
3 years ago
The total cost f(x), in dollars, for renting a vacation house for x days is shown:
KonstantinChe [14]
10 represent the days
3 0
3 years ago
Mr Hamal had Rs 4,400.He purchased 6 kg of rice at Rs 75 per kg,2packets of oil at Rs 125 per packet and he gave Rs3,300 to his
snow_lady [41]

Answer: Therefore, his son and daughter got Rs 200.

Step-by-step explanation:

6 kg of rice = 75*6 = Rs 450

2 packets of oil = RS 2*125 = RS 250

now total money he spent = Rs 450 + Rs 250 + Rs Rs 3,300

                                             = Rs 700 + Rs 3,300

                                             = Rs 4000

Money left = Rs 4,400-Rs 4000 = Rs 400

so

400/2 = Rs 200

4 0
2 years ago
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