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wel
3 years ago
13

A rectangular swimming pool has a length of l yards and a width 5 yards less than its length. How much does it cost to border th

e outside of
the pool using 1-yard square tiles that cost $4 each?
o (161 – 40) dollars
(161 – 24) dollars
(42–6) dollars
(161 - 20) dollars
8 of 15 answered
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Mathematics
1 answer:
horsena [70]3 years ago
8 0

Answer:

i need a bad bleep

Step-by-step explanation:

lol

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What is the length of an arc with a central angle of 43? radians and a radius of 42 cm? use 3.14 for pi. round to the nearest hu
uysha [10]
L=R*angle, but the angle *must* be in radians. So, just translate 43 degrees into radians: 43 * pi / 180, and you'll get:

L = 42 * ( 43 * pi / 180 ) ~ 31.504666, which rounded to the nearest hundredth is 31.50 cm.
4 0
3 years ago
Find the midpoint from (-2,-2) to (6,6)
timama [110]
(2,2)


(x1+x2)/2, (y1-y2)/2
(-2+6)/2=(2)
(-2+6)/2=2
4 0
2 years ago
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In a shipment of 56 vials, only 13 do not have hairline cracks. If you randomly select 3 vials from the shipment, in how many wa
Elden [556K]

Answer: 27434

Step-by-step explanation:

Given : Total number of vials = 56

Number of vials that do not have hairline cracks = 13

Then, Number of vials that have hairline cracks =56-13=43

Since , order of selection is not mattering here , so we combinations to find the number of ways.

The number of combinations of m thing r things at a time is given by :-

^nC_r=\dfrac{n!}{r!(n-r)!}

Now, the number of ways to select at least one out of 3 vials have a hairline crack will be :-

^{13}C_2\cdot ^{43}C_{1}+^{13}C_{1}\cdot ^{43}C_{2}+^{13}C_0\cdot ^{43}C_{3}\\\\=\dfrac{13!}{2!(13-2)!}\cdot\dfrac{43!}{1!(42)!}+\dfrac{13!}{1!(12)!}\cdot\dfrac{43!}{2!(41)!}+\dfrac{13!}{0!(13)!}\cdot\dfrac{43!}{3!(40)!}\\\\=\dfrac{13\times12\times11!}{2\times11!}\cdot (43)+(13)\cdot\dfrac{43\times42\times41!}{2\times41!}+(1)\dfrac{43\times42\times41\times40!}{6\times40!}\\\\=3354+11739+12341=27434

Hence, the required number of ways =27434

5 0
3 years ago
I need to get 2 answered please help it’s with mean, median and mode
Marat540 [252]
They are all averages

mean=average 4+6=10, 10 divded by 2= 5, the mean is 5

median= middle number, 5 6 7, 6 is the median
mode= most repeated number, so 4,4,4,4,4,4,4,5.5,6       4 is the mode
7 0
2 years ago
What is the answer to number 23 ?
Vera_Pavlovna [14]

Answer:

C

Step-by-step explanation:

Use πr²

7 0
3 years ago
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