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FrozenT [24]
3 years ago
7

the builder measures the perimeter of the foundation to be 425 ft. he must order steel beams to install around the perimeter of

the foundation. steel must be ordered in meters. how many meters of steel should the builder order ?
Mathematics
1 answer:
Ad libitum [116K]3 years ago
7 0

Answer:

The builder should order 129.54 meters of steal.

Step-by-step explanation:

I just went on google and typed in "ft. to meters converter".

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The mass of a fluorine atom is 3.16 × 10 - 23 g. What is the mass of 1,000,000,000 fluorine atoms? express your awnser scientifi
elena-s [515]

3.16 × 10 - 23 * 1  x 10 ^ 9 = 3.16 x 10 ^ -14


8 0
3 years ago
Write an explanatory essay on the harmful effects of plastic packaging
oee [108]

Answer:

Chemicals in plastic-like lead, cadmium and mercury directly can come in contact with the humans. These toxins can cause cancers, congenital disabilities, immune system problems and childhood development issues. The other toxins like BPA or health-bisphenol-A are found in plastic bottles and food packaging materials.

Step-by-step explanation:

I can only give you little bit cause writing an essay is to much

3 0
2 years ago
The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident th
Aleks04 [339]

Answer:

The minimum sample size that can be taken is of 14 dogs.

Step-by-step explanation:

The formula for calculating the minimum sample size to estimate a population mean is given by:

n=\frac{z^{2}\sigma^{2}}{e^{2}}

The <u>first step</u> is obtaining the values we're going to use to replace in the formula.

Since we want to be 95% confident, 1-\alpha=0.95 \Rightarrow \alpha=0.05.

Therefore we look for the critical value z_{\alpha/2}=1.96.

Then we calculate the variance:

\sigma = 3.7 \Rightarrow \sigma^{2}=13.69

And we have that:

e=2 \Rightarrow e^{2}=4

<u>Now</u> we replace in the formula with the values we've just obtained:

n=\frac{1.96^{2}*13.69}{4}=13.1479\approx 14

Therefore the minimum sample size that can be taken to guarantee that the sample mean is within 2 inches of the population mean is of 14 dogs.

6 0
3 years ago
Can someone help with this question? Thank u! :)
MatroZZZ [7]

Answer:

2.50

Step-by-step explanation:

the pattern shown in the miles driven goes up each time by 5000, stating it's going up by a constant of 5000. the cost goes up each time by 2000.

divide 5000/2000 which would give you 2.5

round it by two decimal places which gives you 2.50

7 0
3 years ago
A submarine is only allowed to change its depth by rising toward the surface in 60-meters stages. it starts off at (-340) meters
hichkok12 [17]

Answer:

2 stages

Step-by-step explanation:

3 0
2 years ago
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