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Oxana [17]
3 years ago
6

Anyone please help surds questions

Mathematics
1 answer:
ruslelena [56]3 years ago
7 0

Answer:

2\sqrt{21}

Step-by-step explanation:

We can multiply the two irrational terms, getting \sqrt{84}.

We see that 4 is a factor of 84, so we can rewrite \sqrt{84} as \sqrt{4 (21) }. We can take the 4 out, getting 2\sqrt{21}.

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Step-by-step explanation:

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3 years ago
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A scientist launched an object upward at a speed of 32 ft per second from a height of 240 feet. The height of the object is mode
QveST [7]

Answer:

B 5 seconds

Step-by-step explanation:

h = 240 + 32t – 16t^2

When is this equation 0

0 = 240 + 32t – 16t^2

Factor out 16

0 = -16(-15-2t+t^2)

   = -16(t^2-2t-15)

What 2 numbers multiply to -15 and add to -2

-5*3 = -15

-5+3 =-2


0 = -16(t-5) (t+3)

Using the zero product property

t-5=0   t+3=0

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Since time cannot be negative

t=5 seconds

3 0
4 years ago
You are considering a cylindrical container with a diameter of 14 inches and a height of 18 inches. Find the volume of this cont
Vsevolod [243]
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Radius is half of the diameter, which would be 7.
Volume would be 2770.88<span />
3 0
4 years ago
you are considering 2 jobs. one job pays $250 per week, plus 4.5% commission on all sales. The second job pays $1,800 per month
Hoochie [10]
The correct answer is A. Not only does $250 a week equal $1000 a month but the commission is also higher.

first job: $250wk = $1000 Month + .045 commission 
= $12000 year + .045 commission 
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1,000,000 times .045 = $45000 
1,000,000 times .030 = $30000 

FIRST JOB: $12,000 + $45,000 = $57,000 
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The answer is definitely A.
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3 years ago
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Trava [24]

See the attached picture:

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4 years ago
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