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olasank [31]
3 years ago
15

There are 4 semi- trailer truck park a line at the stop. After the first truck, each in the line weights 2 tons more than the tr

uck before it. The truck weight a total of 32 tons. How many pounds does each truck weight?
Mathematics
1 answer:
Anna11 [10]3 years ago
5 0

Let's say the first truck weighs x tons

Then, the weight of 2nd truck = x+2 tons

The weight of 3rd truck = (x + 2) + 2 = x+4 tons

The weight of 4th truck = (x + 4) + 2 = x+6 tons

Total weight of 4 trucks:

x + (x+2) + (x+4) + (x+6) = 32

 

which can be solved easily to give x = 5

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Answer:

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Step-by-step explanation:

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3 years ago
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional
yaroslaw [1]

Answer:

The statement provided is True.

Step-by-step explanation:

The exponential function representing growth is given as follows:

y=y_{0}\cdot e^{kt}

Here,

<em>y</em> = final value

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3 years ago
A new fertilizer was applied to the soil of 146 bean plants. 23% showed increased growth. Find the margin of error and 95% confi
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Answer:

The significance level for this case would be \alpha=1-0.95=0.05 and the critical value for this case would be:

z_{\alpha/2}=1.96

The margin of error is given by:

ME = z_{\alpha/2} \sqrt{\frac{\hat p (1-\hat p)}{n}}

And replacing we got:

ME = 1.96 \sqrt{\frac{0.23*(1-0.23)}{146}} =0.0683

And the margin of error for this case would be ME = 0.07

Step-by-step explanation:

For this case we have the following dataset given:

n= 146 represent the sample size

\hat p =0.23 represent the estimated proportion of interest

Conf=0.95 represent the confidence level

The significance level for this case would be \alpha=1-0.95=0.05 and the critical value for this case would be:

z_{\alpha/2}=1.96

The margin of error is given by:

ME = z_{\alpha/2} \sqrt{\frac{\hat p (1-\hat p)}{n}}

And replacing we got:

ME = 1.96 \sqrt{\frac{0.23*(1-0.23)}{146}} =0.0683

And the margin of error for this case would be ME = 0.07

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3 years ago
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gregori [183]
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3 years ago
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dezoksy [38]

Answer:

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Step-by-step explanation:

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3/7 = 0.42857

7 0
3 years ago
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