Ask question

Ask question

All categories

3 years ago

12

James is putting a brick border around his circular pool. The bricks are 1 foot in length. How many bricks does James need to bu

y to build the border? Use 3.14 for π.

1 answer:

oee [108]3 years ago

3 0

Answer: 6.28 feet

Step-by-step explanation:

We will solve this question using the perimeter of a circle. The perimeter of a circle is given as:

= 2πr

= 2 × 3.14 × 1

= 6.28

You might be interested in

Rewrite the quadratic function below in standard form y=3(x+2)(x-3)

babunello [35]

X=3(x^2-x_6)
3x^2-x-6

8 0

2 years ago

Read 2 more answers

The quotient of a number x and 7 is greater than 5<br> write as an inequality

mariarad [96]

Answer:

x+7>5 there it is pay more attention in class cause that's cake

6 0

2 years ago

According to a study conducted in one city, 35% of adults in the city have credit card debts more than $2.000. A simple random s

BabaBlast [244]

Answer:

Binomial; \mu p=87.5, \sigma p=7.542

Step-by-step explanation:

a distribution is said be a binomial distribution iff

The probability of success of that event( let it be p) is same for every trial
each trial should have 2 outcome : p or (1-p) i.e, success or failure only.
there are fixed number of trials (n)
the trials are independent

here, the trials are obviously independent ( because, one person's debt doesn't influence the other person's)

here n=250

the probability of success(0.35) is same for every trial

(35/100=0.35 is the required p here)

$\mu_{p} =n*p=250*\frac{35}{100} =250*0.35=87.5$

[since, the formula for $\mu _{p} =n*p$ ]

$\sigma _{p} =\sqrt{n*(p)*(1-p)} = \sqrt{250*0.35*(1-0.35)} = 7.542 ( approximately)$

[since, the formula for [tex]\sigma _{p} =\sqrt{n*(p)*(1-p)}

therefore, it is Binomial; \mu p=87.5, \sigma p=7.542

4 0

3 years ago

A container holds a combination of nickels and quarters. There are 156 coins in all, and their total value is $21.60. The system

Tatiana [17]

X+y=156
<span>0.05x+0.25y=21.6

-1/4*/ x+y=156
1/20x+1/4y=216/10

-1/4x-1/4y=156*-1/4=-39

</span>1/20x+1/4y=216/10
<span>+--------------------------
-4/20x=-17,4

x=87

</span>x+y=156
<span>
87+y=156 y=69

this question answer is </span><span>87 nickels and 69 quarters</span><span>

</span>

3 0

2 years ago

A carpenter makes and sells rocking chairs. The material for each chair costs $22.50. The chairs sell for $75 each. If the charp

Lady_Fox [76]

Answer:

About 6 chairs

Step-by-step explanation:

75x=22.50+420

75x=442.5

x=5.9

So about 6 chairs

4 0

2 years ago