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USPshnik [31]
3 years ago
11

draw a bar model that shows how the number of hours in March compared with the number of hours in February of this year

Mathematics
1 answer:
Alenkasestr [34]3 years ago
6 0

Answer: Your answer will be 1,416


Step-by-step explanation: First you see how many day March and February had March had 31 days and 31 days= 744 hours and February has 28 days and 28 days= 672 hours so know I add the two numbers 744 + 672 = 1,416.


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You have 800 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in half. What are the larg
katovenus [111]
Problema Solution

You have 800 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in half. What are the largest dimensions of this enclosure that you could build?

Answer provided by our tutors

Make a drawing and denote:


x = half of the length of the enclosure


2x = the length of the enclosure


y = the width of the enclosure


P = 800 ft the perimeter


The perimeter of the two enclosures can be expressed P = 4x + 2y thus


4x + 3y = 800


Solving for y:

........

click here to see all the equation solution steps

........

y = 800/3 - 4x/3


The area of the two enclosure is A = 2xy.


Substituting y = 800/3 - 4x/3 in A = 2xy we get


A = 2x(800/3 - 4x/3)


A =1600x/3 - 8x^2/3


We need to find the x for which the parabolic function A = (- 8/3)x^2 + (1600/3)x has maximum: 


x max = -b/2a, a = (-8/3), b = 1600/3


x max = (-1600/3)/(2*(-8/3))


x max = 100 ft


y = 800/3 - 4*100/3


y = 133.33 ft


2x = 2*100


2x = 200 ft

3 0
3 years ago
What’s.the perimeter of a square with an area of 49 cm2
Free_Kalibri [48]

Answer:

<h3>28</h3>

Step-by-step explanation:

Area of a square =

s^2

Perimeter =

4\times s

Where s = side

Solve for s using the area

A =49\\\\49 = s^2\\\\Square\:root \:both\:sides\:of\:the\:equation\\\\\sqrt{49} = \sqrt{s^2} \\\\7 =s\\\\s =7

Find the perimeter

4\times s\\\\= 4 \times 7\\\\= 28

8 0
3 years ago
HELP!!! GIVE WHOEVER BRAINLIEST !!!
andrey2020 [161]

Answer:

B

Step-by-step explanation:

The opposite of x is -x

And the opposite of -6 is 6

So -x+6 is the inverse

8 0
2 years ago
This is due TODAY!! Answer will receive brainliest!!!!!!
mel-nik [20]

Answer:

Q.10) Answer is Option D.

Q.6) Answer is Option D .

5 0
3 years ago
Find the value of x <br> A.)20<br> B.)55<br> C.)70<br> D.)38
Alex Ar [27]

Answer:

A.) 20

Step-by-step explanation:

These angles are complementary meaning they add up to 90°.

4x - 10 + x = 90

5x - 10 = 90

5x = 100

x = 20

4 0
2 years ago
Read 2 more answers
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