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kicyunya [14]
3 years ago
7

Please help me !! Thanks !

Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0
The answers are the second, third, fifth, and sixth.

Hope this helps!
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The first row in a theater has 8 seats, the second row has 12 seats, and the third row has 16 seats. If this pattern continues,
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The answer is c 28 because it is going by plus 4 <span />
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3 years ago
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The class average on a math test was an 82 with a standard deviation of 5. If the 
Alex787 [66]

Answer:

Option 3 and 4.

Step-by-step explanation:

The z score shows by how many standard deviations the raw score is above or below the mean. The z score is given by:

z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean, \ \sigma=standard\ deviation

Given that mean (μ) = 82, standard deviation (σ) = 5

1) For x = 74:

z=\frac{x-\mu}{\sigma} \\\\z=\frac{74-82}{5} =-1.6

Option 1 is incorrect

2) For x < 87

z=\frac{x-\mu}{\sigma} \\\\z=\frac{87-82}{5} =1

From the normal distribution table, P(x < 87) = P(z < 1) = 0.8413 = 84.13%

Option 2 is incorrect

3) For x = 95:

z=\frac{x-\mu}{\sigma} \\\\z=\frac{95-82}{5} =2.6

Option 3 is correct

4) For x < 77

z=\frac{x-\mu}{\sigma} \\\\z=\frac{77-82}{5} =-1

From the normal distribution table, P(x < 77) = P(z < -1) = 0.16 = 16%

Option 4 is correct

5) For x > 92

z=\frac{x-\mu}{\sigma} \\\\z=\frac{92-82}{5} =2

From the normal distribution table, P(x > 92) = P(z > 2) = 1 - P(z < -2) = 1 - 0.9772 = 0.0228 = 2.28%

Option 5 is incorrect

8 0
3 years ago
A survey of 391 children given at a local elementary school showed that 175 like chocolate ice cream, 150 like pistachio ice cre
poizon [28]

Answer:

325

Step-by-step explanation:

Just add the number of kids who like chocolate, 175 to the number of kids of like pistachio, 150, and you get 325 children

6 0
2 years ago
How does the volume of an oblique cylinder change if the radius is reduced to 2/9 of its original size and the height is quadrup
nordsb [41]
For the answer to the question above, 
Let's use the formula for finding the volume.

(pi) x 2/9 x 2/9 x r^2 

(pi) x <u>2</u> x <u>2</u> x r^ 2 x 4h
         9    9

simplify and solve.

The the will be
<u>16 </u>(pi) r^2h
81

I hope I helped you in my answer

4 0
3 years ago
What adds up to 3 and multiplies to 10
vovangra [49]

1 i think? sry if im wrong

5 0
3 years ago
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