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2 years ago

15

The museum of natural history has an auditorium that can seat 200 people. A class of 45 students is seated in the auditorium for

a lecture. What decimal represents the portion of the seats in the auditorium that are empty ?

1 answer:

Sophie [7]2 years ago

5 0

Answer: 1.55

Step-by-step explanation:70 percent sure, might be .155

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Z - 12 = 6<br> A. 10<br> B. 15<br> C. 18<br> D. 6<br><br> Need help working it out

const2013 [10]

Z-12=6

you take the 12 and add it to both sides making it look like:
z-12+12=6+12
which also looks like
z-0=6+12

z-0 = z

so now you have
z=6+12

6+12 = 18

SO Z=18!!!

your answer is 18

8 0

2 years ago

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To the nearest tenth of a percentage what is 3/11 written as a percent

MArishka [77]

27.3%

hope this helps leave a 5-rate and thanks!

6 0

3 years ago

Using the quadratic formula to solve x2 = 5 - X, what are the values of X?

sdas [7]

Answer:

The answer is

<h3> $x = \frac{ - 1 + \sqrt{21} }{2} \: \: \: or \: \: \: x = \frac{ - 1 - \sqrt{21} }{2}$ </h3>

Step-by-step explanation:

x² + x - 5 = 0

Using the quadratic formula

That's

<h3> $x = \frac{ - b\pm \sqrt{ {b}^{2} - 4ac } }{2a}$ </h3>

From the question

a = 1 , b = 1 , c = - 5

Substitute the values into the above formula and solve

We have

<h3> $x = \frac{ - 1\pm \sqrt{ {1}^{2} - 4(1)( - 5) } }{2(1)} \\ x = \frac{ - 1\pm \sqrt{1 + 20 } }{2} \\ x = \frac{ - 1\pm \sqrt{21} }{2}$ </h3>

We have the final answer as

<h3> $x = \frac{ - 1 + \sqrt{21} }{2} \: \: \: or \: \: \: x = \frac{ - 1 - \sqrt{21} }{2}$ </h3>

Hope this helps you

3 0

2 years ago

PLEASE HELP (another question at the bottom)

d1i1m1o1n [39]

Boo... boo? Boo! Tell me it’s not what I think it is xd

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2 years ago

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Triangle ABC is translated according to the rule (x,y)- (x +2,y-8) if the coordinates of the pre image of point B are (4,-5) wha

kiruha [24]

Answer:

The coordinates of B' is are (6,-13).

Step-by-step explanation:

7 0

3 years ago