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guapka [62]
3 years ago
10

Molly and Melissa swam laps during practice.

Mathematics
2 answers:
Alexxandr [17]3 years ago
6 0
Molly had 60 laps of swimming
spin [16.1K]3 years ago
4 0
She had a lap of 60 i think
You might be interested in
Help this is due tomorrow please! Carter has 88 feet of fencing to enclose a dog pen in his yard. He is trying to decide whether
svet-max [94.6K]
<h3>Answer:</h3>

The circle makes the larger area

The difference in the two areas is roughly 132.2479 square feet.

=================================================

Explanation:

If Carter decides to go for a circle, then 88 is the circumference, which is the distance around the circle (aka perimeter of the circle).

Use this to find the radius needed

C = 2*pi*r

r = C/(2pi)

r = 88/(2pi)

r = 44/pi

I'll leave it in exact form rather than approximate it.

Once we know the radius, we can find the area of the circle.

A = pi*r^2

A = pi(44/pi)^2

A = pi*(1936/(pi^2))

A = 1936/pi

A = 616.247939651819 approximately

I used my calculator's stored version of pi to compute the area in the final step.

We'll be comparing this number later, so hold onto it for now.

-------------------------------------

If Carter instead decides for a square, then 88 is the perimeter since it's the amount of fencing he has to work with.

Divide it into 4 pieces to find the length of each side of the square (all sides are equal in a square)

88/4 = 22

Each side is 22 feet

The area of this square is (22)^2 = 22*22 = 484 square feet

--------------------------------------

Summary:

  • If Carter goes for a circular enclosure, then he gets roughly 616.2479 square feet.
  • The square enclosure only gets him exactly 484 square feet.

The circle wins in terms of larger area.

The difference being roughly 616.2479  - 484 = 132.2479 square feet.

3 0
3 years ago
Separate the number 18 into two parts where the product of those parts is 77
mart [117]
Answer: 11, 7

11 + 7 = 18
11 x 7 = 77
3 0
3 years ago
Read 2 more answers
A=x+y-9<br> solve for x plz hurry
FinnZ [79.3K]

Answer:

x=A+y+4

Step-by-step explanation:

6 0
3 years ago
Raul calculated that he would spend $125 on school supplies this year. He actually spent $87.50 on school supplies. What is Raul
mylen [45]
C - 30%.

We know he spends less than he has expected, so we put it as a fraction calculate the percentage of the error. 

So it would be:

87.5/ 125 = 0.7

And 1-0.7 = 0.3 

When we move the chemical place two places to the left to make it a percentage, it will become 30%. 
8 0
4 years ago
Read 2 more answers
Busca dos números consecutivos de manera que la diferencia de sus cuadrados sea 19
deff fn [24]
The numbers are 9 and 10.

Let x be the first number.  Since they are consecutive, this means (x+1) represents the second number.

The square of x is x².  The square of (x+1) is
(x+1)²=(x+1)(x+1)=x²+1x+1x+1=x²+2x+1

The difference of these squares would be given by
x²+2x+1 - x²

Setting this equal to 19,
x²+2x+1 - x² = 19

Combining like terms,
2x+1=19

Subtract 1 from each side:
2x+1-1=19-1
2x=18

Divide both sides by 2:
2x/2 = 18/2
x = 9

The first number, x, is 9.  This means the second number, x+1, is 9+1=10.
4 0
4 years ago
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