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FinnZ [79.3K]
3 years ago
5

Walking lights are placed around the perimeter of rectangular garden 30 feet be 16 feet and are placed 18 inches apart. How many

lights are needed?
Mathematics
1 answer:
Masteriza [31]3 years ago
3 0
Well we can find the perimeter by using the formula P=2L + 2W 
P=2(30) + 2(18)      P=60+36     P=96
I believe we can divide the perimeter by 18 to find the total amount of lights needed. 
96÷18=5.333333 
So we know at least 5 lights are needed.
I'm not sure if I'm correct, but I hope this helped anyways :)
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a survey of an urban university (population of 25,450) showed that 750 of 1,100 students sampled attended a home football game d
DiKsa [7]

The confidence interval for the proportion of students attending a football game is [0.6592, 0.7044].

Confidence interval can be calculated by below formula

Pcap - Z_{\alpha /2}\sqrt{\frac{Pcap(1 - Pcap)}{n} } < p < Pcap + Z_{\alpha /2}\sqrt{\frac{Pcap(1 - Pcap)}{n} }

where the left part is the lower interval and right side is the higher interval.

Pcap = 750/1100

Pcap = 0.6818

Again to calculate Z_{\alpha /2} , as we know that the level of confidence is 90 percent so its value will be 1.645

now putting the values on the both side we can get ,

0.6818 - 1.645 x 0.014 < p  <  0.6818 + 1.645 x 0.014

0.6818 - 0.023  < p < 0.6818 + 0.023

0.6588 < p < 0.7048

the nearest value is [0.6592, 0.7044]

Hence the confidence interval for the proportion of students attending a football game is [0.6592, 0.7044]

To know more on confidence interval, visit here

brainly.com/question/13067956

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5 0
1 year ago
Please help me in the question of commission ! Grade - 9 . ​
AlladinOne [14]

Answer:

Step-by-step explanation:

Commission for  amount  Rs. 5,00,00 = \frac{2}{100}*500000

                                                               = 2* 5000

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total commission = Rs. 32,000

Remaining commission = 32500 - 10000

                                      = Rs. 22500

Let remaining amount of the restaurant = Rs. x

Commission on Rs. x = 22500

3% of x = 22500

\frac{3}{100}*x=22500\\\\x=22500*\frac{100}{3}\\\\x = 7500*100

x = Rs. 750000

Price of the restaurant = 750000 + 500000

                                     =Rs . 1250000

7 0
3 years ago
PLS HELP ASAP y = -3x + 1<br>y = x -7​
Dahasolnce [82]

Answer:

x=-1/3

x=7

Step-by-step explanation:

Not sure if this correct tho

5 0
3 years ago
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College students are offered a 8% discount on a textbook that sells for 26.50. If the sales tax is 8, find the cost of the textb
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Which side lengths form a right triangle?
Tanya [424]

The side lengths that forms a right triangle are as follows:

  • 11, 13 √290
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<h3>What is a right angle triangle?</h3>

A right angle triangle has one of its angle as 90 degrees. The sides of the triangle follows Pythagoras  theorem.

Therefore,

c² = a² + b²

where

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The hypotenuse is the longest side of the right triangle.

Therefore, the side lengths that forms a right triangle are as follows:

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learn more on right triangle here: brainly.com/question/14593341

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