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3 years ago

Add 14 to the quotient of 42 and 6, then double the result

Mathematics

1 answer:

PolarNik [594]3 years ago

3 0

The answer is 42 why, because 42 divided by 6 equals 7 plus 14 is 21 and then you double it so it's 42.

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These are the travel times to work for a class of 20 people in minutes. 80 15 60 55 120 95 30 20 90 50 85 45 40 20 85 75 130 20

alexira [117]

Answer:

115 minutes

Step-by-step explanation:

Range = highest observation - smallest observation

Highest observation = 130 minutes

Smallest observation = 15 minutes

Therefore range = 130 - 15

=115 minutes

8 0

3 years ago

How would you write 2/5 as a decimal

kondaur [170]

<span>2/5 as a decimal?
2/5 =0.4
hope it helps</span>

7 0

3 years ago

Read 2 more answers

Celia thinks that because the drop between the first two points is so large, the best model might actually have a y- intercept a

victus00 [196]

The equation of Celia's exponential model is $y = 9.4 * 0.75^x$

<h3>How to estimate the model?</h3>

The table that completes the question is added as an attachment

The y-intercept is given as:

(0,9.4)

The ratios of successive data values are calculated as:

$r_1 = \frac{6.0}{10}= 0.6$

$r_2 = \frac{5.4}{6.0}= 0.9$

$r_3 = \frac{3.9}{5.4}= 0.72$

$r_4 = \frac{3.7}{3.9}= 0.95$

$r_5 = \frac{2.3}{3.7}= 0.62$

$r_6 = \frac{1.4}{2.3}= 0.61$

$r_7 = \frac{1.0}{1.4}= 0.71$

$r_8 = \frac{0.9}{1.0}= 0.9$

$r_9 = \frac{0.8}{0.9}= 0.89$

$r_{10} = \frac{0.5}{0.8}= 0.63$

The average of the above values is

$b = \frac{0.6 + 0.9 + 0.72 + 0.95 + 0.62 + 0.61 + 0.71 + 0.9 + 0.89 + 0.63}{10}$

Evaluate

b = 0.75

An exponential function is represented as:

$y = ab^x$

Where

a = 9.4 as in the y-intercept (0,9.4)

b = 0.75

Substitute these values in $y = ab^x$

$y = 9.4 * 0.75^x$

Hence, the Celia's exponential model is $y = 9.4 * 0.75^x$

Read more about exponential function at:

brainly.com/question/11464095

#SPJ1

7 0

2 years ago

What is the function written in vertex form?

bekas [8.4K]

4(x+6)2+10=8x+58
4(x+6)2-26=8x+22
4(x+6)2-134=8x-86
4(x+6)2+154=8x+202
~ I hope this helped!

4 0

3 years ago

Read 2 more answers

Assume that trees are subjected to different levels of carbon dioxide atmosphere with 6% of the trees in a minimal growth condit

Licemer1 [7]

Answer:

The mean is 561.40 ppm. The standard deviation is 29.15 ppm.

Step-by-step explanation:

We can calculate the mean and the standard deviation using the proportions of the population that are subjected to the different levels.

The mean can be calculated as

$\mu=\sum p_i*L_i\\\\\mu=0.06*370+0.13*470+0.46*560+0.35*630\\\\\mu=561.40 \,ppm$

The standard deviation of the mean can be calculated in a similar way

$\sigma=\sqrt{\sum p_i(L_i-\mu)^2}\\\\\sigma=\sqrt{0.06(370-561.4)^2+0.13(470-561.4)^2+0.46(560-561.4)^2+0.35(630-561.4)^2}\\\\\sigma=\sqrt{0.06(36634)+0.13(8354)+0.46(2)+0.35(4706)}\\\\\sigma=\sqrt{2198.04+1086.01+0.90+1647.09}=\sqrt{4932.04}=29.15$

The mean is 561.40 ppm. The standard deviation is 29.15 ppm.

8 0

3 years ago