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Evgen [1.6K]
3 years ago
13

Miss Sandy is fencing in her rectangular backyard which is 3x^2 feet wide and 4xy + 5x^3 y^2 feet long. Find perimeter of yard H

ow much fencing does she need. Use mathematics to justify your answer
Mathematics
1 answer:
hjlf3 years ago
4 0

Given:

Width of rectangular backyard = 3x^2 feet

Length of rectangular backyard = 4xy+5x^3y^2 feet

To find:

The perimeter of yard.

Solution:

Formula or perimeter of a rectangle is

Perimeter=2(length +width)

Using this formula, the perimeter of the rectangular backyard is

Perimeter=2(4xy+5x^3y^2+3x^2)

Perimeter=8xy+10x^3y^2+6x^2

Therefore, the perimeter of the rectangular backyard is 8xy+10x^3y^2+6x^2 feet. So, 8xy+10x^3y^2+6x^2 feet fencing is needed.

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Write an expression using fractions to show how to determine the amount that each person will pay. Then calculate each person's
ehidna [41]
Okay so I don’t have a pen or paper so i’m going to have to write out every step on my phone, let me know if I lose you at any point.

the fraction would be 4/29.16, because you need to equality split the bill between 4 people.

the long division would be:

____________
4|29.16

4 does not go into 2 so place a zero over 2.

0___________
4|29.16

4 goes into 29 seven times, so place 7 over 9. subtract 7x4 from 29.16.

07._________
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(-)28
————————-
= 1.16

4 goes into 11 (ignore the decimal and the 6 for now) 2 times. subtract 2x4 from 11.

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————————-
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4 goes into 36 9 times. subtract 4x9 from 36.

07.29_______
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(-)28
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= 1.16
(-) 8
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= .36
(-) 36
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= 0

so your answer would be each person would pay $7.29. I hope this makes sense!!
8 0
3 years ago
Last trig question!! Please explain how to do this!! Thank youuu !!!!!!
Shalnov [3]

Answer:

See the verification below.

Step-by-step explanation:

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Extract from the expression on the left of the equal sign the common factor "sin(x)":

sin^3(x)+sin(x)\,cos^2(x)=sin(x)\\sin(x)[sin^2(x)+cos^2(x)]=sin(x)

Now use the Pythagorean trigonometric identity: sin^2(x)+cos^2(x)=1 to replace the expression in between square brackets with "1":

sin(x)[sin^2(x)+cos^2(x)]=sin(x)\\sin(x) \,[1]=sin(x)\\sin(x)=sin(x)

Therefore we have verified the identity

7 0
3 years ago
HELP
dsp73

Answer:

1)  4

2) 3

3) 9

4) 6

5) 3/4

Step-by-step explanation:

5 0
3 years ago
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zhuklara [117]

Answer:

QR

Step-by-step explanation:

K<u>LM</u>N is in the same spot as P<u>QR</u>S

8 0
3 years ago
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Montano1993 [528]

Answer:

<u>c. no solution</u>

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