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-Dominant- [34]
3 years ago
8

Juan builds a square dog pen that has an area of 100 square feet. He then builds a second pen that has an area of 49 square feet

. Which is the closest to the percent of the decrease in the area of the pen? *
Mathematics
2 answers:
tiny-mole [99]3 years ago
3 0

Answer:

its 21.0

Step-by-step explanation:

abruzzese [7]3 years ago
3 0

Answer:

4,900 is the answer I think

Step-by-step explanation:

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The perimeter of a rectangle is 30 cm and its length is x cm. Find its area in terms of x. step by step explanation.​
mars1129 [50]

Answer:

The area of the rectangle in terms of 'x' = 13x

Step-by-step explanation:

  • Perimeter = 30 cm
  • Length = x cm

Using the perimeter formula to find the width w.

P=2(l+w)

P = 2l + 2w

2w = P-2l

Dividing both sides by 2

w\:=\:\frac{P}{2}-2

as P = 30 cm

w\:=\:\frac{30}{2}-2

w\:=\:15-2

w = 13 cm

Using the formula of the rectangle area

A = wl

substitute w = 13 and l = x in the formula

A=13\times \:x

A = 13x

Therefore, the area of the rectangle in terms of 'x' = 13x

7 0
3 years ago
A central angle, thata, of a circle with radius 16 inches intercepts an arc of 19.36 inches. Find thata.
kaheart [24]
Theta*
\theta=\frac{19.36}{16}=1.21 radians.
5 0
3 years ago
Read 2 more answers
a bag contains 6 white marbles and 4 black marbles. a marble is drawn without replacing the first one. what is the probability o
Jlenok [28]

Answer:

4/15

Step-by-step explanation:

6/10 times 4/9=4/15

7 0
3 years ago
Read 2 more answers
HELPPPPPPPPPPP omll i cant fail
bulgar [2K]

Answer:

F(-2)=2

Step-by-step explanation:

F(x)=4x+10

F(-2)

F(-2)=4(-2)+10

           -8 +10

F(-2)= 2

6 0
3 years ago
15. At a football match, 10 men bought either a pie or a cup of
Soloha48 [4]

Answer:

8 pies and 2 coffees must have been bought.

Step-by-step explanation:

Given that:

10 men bought either a pie or a cup of coffee.

Cost per pie = 60p

Cost per coffee = 50p

Total amount spent = £5.80 * 100 = 580p

Let,

x be the number of pies

y be the number of coffees

According to given statement;

x+y = 10     Eqn 1

60x+50y=580    Eqn 2

Multiplying Eqn 1 by 50

50(x+y=10)

50x+50y=500      Eqn 3

Subtracting Eqn 2 from Eqn 3

(60x+50y)-(50x+50y) = 580-500

60x+50y-50x-50y=80

10x=80

Dividing both sides by 10

\frac{10x}{10}=\frac{80}{10}\\x=8

Putting x=8 in Eqn 1

8+y=10

y=10-8

y=2

Hence,

8 pies and 2 coffees must have been bought.

4 0
3 years ago
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