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2 years ago

How do u do these problems

Mathematics

1 answer:

vesna_86 [32]2 years ago

3 0

This one has a pattern of (x+2)2
Just find an equation that fits the relationship between x and y

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If it takes 30 minutes to fill a 750000 cm3 (cubed) pool

Gala2k [10]

Step 1: Find out how many cm3 is filled in a minute.
750000/30 = 25000cm3 per minute
Step 2: Find out how many minutes it takes to fill 1200000cm3.
1200000/25000 = 48 minutes

Answer: 48 minutes

5 0

2 years ago

Read 2 more answers

Recall the chapter example which described the fact that the mean IQ in large, diverse populations is 100 and the standard devia

vova2212 [387]

Answer:

The margin of error for the 99% confidence level for this sample is ±2.23.

None of the given figures is close to the answer:

E. None of the above

Step-by-step explanation:

margin of error (ME) around the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic of the 99% confidence level (2.576)

s is the population IQ standard deviation (15)

N is the sample size (300)

Using these numbers we get:

ME= $\frac{2.576*15}{\sqrt{300} }$ ≈ 2.23

7 0

2 years ago

An 8th grade class project involves decorating a rectangular box with the following dimensions.

Margarita [4]

Answer:1500

Step-by-step explanation: so i got the anwser 1539.2 and just rounded to the nearest hundredth which is 1500 hopefully it helps!

5 0

2 years ago

What number is less than 8

marshall27 [118]

Answer:

any number that isn't 8 or above it

Step-by-step explanation:

4 0

2 years ago

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Six and forty-two ten-thousandths as a decimal

sergey [27]

Answer:

6.0042

Step-by-step explanation:

6 and forty-two ten-thousandths as a decimal.

mixed number : $6\frac{42}{10,000}$

decimal : 6.0042

7 0

2 years ago