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andre [41]
2 years ago
7

The temperature is 5° below zero the temperature falls 15° what is the temperature now

Mathematics
1 answer:
creativ13 [48]2 years ago
5 0

Answer: -20° is your answer

Step-by-step explanation:

When taking away a negative you must add the two numbers and when you're adding you subtract ❤

-Noxily

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A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a single-strand electric f
likoan [24]

Step-by-step explanation:

Let x be the length and y be the width of the rectangular plot.

The plot is bounded on one side by a river and on the other three sides by a single-strand electric fence. It means,

x+2y = 1500

x = 1500 - 2y ....(1)

We know that the area of a rectangular plot is given by :

A = xy ....(2)

Put the value of x from equation (1) in (2)

A=(1500-2y)y\\\\A=1500y-2y^2 .....(3)

For largest area, differentiate above area equation wrt y.

\dfrac{dA}{dy}=\dfrac{d}{dy}(1500y-2y^2)\\\\=1500-4y\\\\\text{Put}\ \dfrac{dA}{dy}=0\\\\1500-4y=0\\\\y=\dfrac{1500}{4}\\\\=375

Put the value of y in equation (1).

x = 1500-2(375)

= 750 m

Put the value of y in equation (3).

A =1500(375)-2(375)^2\\A=281250\ m^2

Hence, the largest area is 281250 m² and its dimensions are 750 m and 375 m.

3 0
3 years ago
What is the domain of the function shown in the graph below?
tigry1 [53]

Answer:

All except one interval [-2,8]

Step-by-step explanation:

Notice that the function, wich an hyperbola, has a vertical asymptote in both -2 and 8 and there is nothing between this two values.

So we will exclude what's between them out of the domain.

6 0
2 years ago
Read 2 more answers
(NOT MATH ITS SCIENCE HELP PLEASE)If a builder wanted to construct a shopping mall on a barrier island, which of the following q
Verdich [7]

Answer:

Option A

Step-by-step explanation:

4 0
2 years ago
Dilating a triangle changes the angles and side length of the triangle. A. True B. False
Bogdan [553]
False, it may change the side length (not 100% sure) but I know for sure dilating doesn't change the angle
3 0
3 years ago
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The eight of a cone-shaped container is 18 centimeters and it’s radius is 7 centimeters. Meg fills the container completely with
ankoles [38]
Hello!

The find the volume of a cone you divide the product of the base and height by 3. First we find the area using \pir².

A=49(3.14)=153.86

Now we multiply this by the height.

153.86(18)=2769.48

Now we divide by 3.

2769.48/3=923.16

Now we divide this number by 21 to see how many days it will take for the container to become empty.

923.16/21=43.96≈44

Therefore, our answer is A) 44 days.

I hope this helps!
8 0
3 years ago
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