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IrinaK [193]
3 years ago
6

Someone please help me !!!!

Mathematics
1 answer:
solniwko [45]3 years ago
7 0
There is an app to tell you the answer
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helppp please ???????? i don’t understand
Vedmedyk [2.9K]

Answer:

should be -8

Step-by-step explanation:

when reflecting over the x-axis, y changes from positive to negative or negative to positive. x stays the same.

when reflecting over the y-axis, x changes from positive to negative or negative to positive. y stays the same.

4 0
3 years ago
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Pls help me with this its the last question
andreev551 [17]

Answer:

10y+5n+3/6 im not too sure but I think its correct

btw envision gives you a try again

3 0
3 years ago
A countertop is 16 feet long and 3 feet wide. what is the area of the countertop in square meters
Paladinen [302]

The area of the countertop is (16-ft x 3-ft) = 48 feet² .

1 foot = 0.3048 meter (rounded)

(1 foot)² = (0.3048 meter)² = 0.0929 meter²

48 feet² = (48 x 0.0929) =  4.459 meter² (rounded)

8 0
3 years ago
Aeva is selling friendship pins as a service project. Each pin with green beads sells for $3. Each pin with red beads sells for
Luba_88 [7]

Answer:69

Step-by-step explanation:

69•2= 138

69-11=58

58•3=174

174+138=312

6 0
3 years ago
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A rancher plans to make 4 identical and adjacent rectangular pens against a barn (see figure below), each with an area of 100 m^
Tasya [4]

Answer:

10 by 10 meters

Step-by-step explanation:

In calculus terms, you can use the formula for the perimeter which is 2l + 2w, and the area l × w.

Then since the area is 100

l × w = 100. So w = 100/l

Then substitute this into the perimeter formula.

w = 100/l → 2l + 2(w) = 2l + 2(100/l) = 2l + 200/l.

Then take the derivative d/dx [take the derivative of a quantity with respect to x], by using a simpler method known as the power rule:

d/dx[x^n] = nx^n-1

so p = 2l + 200/l becomes p' = 2 - 200/l^2

Since the derivative of a constant is 0, to solve for l, set p' to 0

0 = 2 - 200/l^2 → -200/l^2 = -2 → 200/l^2 = 2 → 2l^2 = 200 → l^2 = 100 → l = √100, l = 10.

Now that we know the length is 10, We can substitute the length in the original equation to find the width.

l = 10 → w = 100/l → w = 100/10, w = 10.

Therefore the perimeter of each rectangular pen is 40, with a length of 10 and width of 10.

If you want to do this algebraicly, there are more steps involved

7 0
2 years ago
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