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Brut [27]
3 years ago
9

Principal Leroy Jenkins wants to build a circular garden in the school courtyard. The garden will have a diameter of 20 feet. Pr

incipal Jenkins will put a fence around the garden to protect the plants. How much fencing should Principal Jenkins purchase?
Mathematics
1 answer:
Dovator [93]3 years ago
8 0

Answer:

62.8ft

Step-by-step explanation:

we are to determine the circumference of the garden

circumference = πD

= 3.14 x 20 = 62.8 ft

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You find 72 coins consisting only of nickels, dimes, and quarters, with a face value of $10.20. However, the coins all date from
Oliga [24]

Answer:

You have found 24 nickels.

Step-by-step explanation:

Let N be the number of nickles, D be the number of dimes and Q be the number of quarters. The number of coins and their face values are given by the following expressions, respectively:

N+D+Q=72\\0.05N+0.10D+0.25Q=10.20

As of now we have three variables and two expressions, the final expression needed to solve the linear system is given by the amount offered by the coin dealer:

10N+20D+15Q=1,060

Solving the linear system:

N+D+Q=72\\5N+10D+25Q=1,020\\10N+20D+15Q=1,060\\\\10N-10N+20D-20D+15Q-50Q=1,060-(2*1,020)\\-35Q=-980\\Q=28\\\\5N-10N+10D-10D+25Q-10Q=1,020-720\\-5N+15Q=300\\-5N=300-(15*28)\\N=24

You have found 24 nickels.

7 0
3 years ago
What is Sin x = 23/45
BartSMP [9]

Answer:

0.00892045

Step-by-step explanation:

i put your question in a sine calc and thats what it said

5 0
3 years ago
There are 48 skittles in a bag but 12 are red.What percentage are NOT red skittles
IgorLugansk [536]

75% of the skittles are not red.

This is figured out by dividing 12 by 48. So you get .25 (25%) of the skittles are red, yeah? After that, you just subtract 25 from 100, and boom! 75% of the skittles are not red.

5 0
3 years ago
URGENT PLEASE HELP ME WITH THIS MATH QUESTION Should
Radda [10]

Answer:

A composition of transformations is a combination of two or more transformations.A composition of reflections over parallel lines has the same effect as a translation (twice the distance between the parallel lines.

Step-by-step explanation:

4 0
4 years ago
A circular swimming pool is 21 feet in
AveGali [126]

Answer:

66 feet

Step-by-step explanation:

Mayra wants to place tiles on the edge of pool, i.e, on the circumference of the circular part

so the length required will be ,2πr

radius=21/2 feet=10.5feet

now req lenght = (2π10.5)=66 (feet)

3 0
3 years ago
Read 2 more answers
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