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kotegsom [21]
3 years ago
11

Stephanie ran four laps around the school track in 7min and 30 sec how many sec per lap is that

Mathematics
1 answer:
Brums [2.3K]3 years ago
5 0

Answer:

1 minute and 52.5 seconds

Step-by-step explanation:

4 Laps = 7 mins 30 sec , we know that there are 60 seconds in a minute so 30/60 = 0.5 plus the 7 minutes we obtain: 7+0.5=7.5 minutes.

Since we want to find out how many seconds it took to go around once and we know that it took 7.5 minutes to go around 4 times we divide 7.5 minutes by 4 laps and so:


7.5minutes/4laps = 1.875 minutes so 1 minute and 87.5 % of a minute so:


0.875 x 60 = 52.5 seconds so 1 minute and 52.5 seconds


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The center of the basketball court has a diameter of 12 feet. What is the area of the circle
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Answer:36π squared feet

Step-by-step explanation:

Diameter=12

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Radius=12/2

Radius=6 feet

Area of circle=π x Radius x Radius

Area of circle=π x 6 x 6

Area of circle=36π

5 0
3 years ago
7. The store at your school wants to stock T-shirts that come in five sizes (small, medium, large, XL, XXL) and in two colors (o
kenny6666 [7]

Answer:

a. 10

b. 0.1

Step-by-step explanation:

a. The t-shirts comes in 5 sizes (Small,medium,large, extra large and extra extra large) and two colors orange and black. The total different type of shirts are 5*2=10 different type of t-shirts.Also if we make sample space of all shirts we can assess the total different type of t-shirts. sample space=S={small orange,medium orange,large orange,XL orange,XXL orange,small black,medium black,large black,XL black,XXL black}. n(S)=total different type of shirts=10.

b. P( large orange t-shirt)=n(large orange t-shirt)/n(S)=1/10=0.10.

3 0
3 years ago
On a piece of paper, use a protractor to construct a triangle with angle measures of 40° and 60º.
andrew-mc [135]

Answer:

There are 180 degrees in a triangle so it is 80 degrees

4 0
2 years ago
Read 2 more answers
Answer the question below
lys-0071 [83]

Answer:

A) -1

Step-by-step explanation:

\frac{3 + 2\sqrt{5} }{2\sqrt{5}-3 } \\

We can rewrite 2√5 - 3 as -(3 + 2√5)

Therefore,

\frac{3+ 2\sqrt{5} }{-(3 + 2\sqrt{5} )} \\

We can cancel out 3 + 2√5 both in the numerator and the denominator. So we get

= 1/-1

= -1

Answer : A) -1

Thank you.

6 0
3 years ago
Please include equation and solution thanks
ehidna [41]
John is 31 and Jenny is  26

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