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diamong [38]
3 years ago
13

What is the slope of the line represented by the equation y =4/5 x – 3

Mathematics
1 answer:
nydimaria [60]3 years ago
7 0
Your equation is presented in by the following formula of y = mx + b

m = slope, it is the coefficient of X

y = 4/5 X - 3

m = 4/5


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2.5

Step-by-step explanation:


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Help asap ill mark brainlist
Svetach [21]

Answer:

2³·5

Step-by-step explanation:

5·2·2·2 = 2³·5

Exponents are how many a number is multiplied by itself. 2 is multiplied by itself 3 times, so it is 2 to the 3rd power.

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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
Kyle has three pieces of ribbon. One is 2/5 inches long, another is 5/10 inches long, and the last one is 1/3 inches long. What
katrin2010 [14]
5/10 bc it is equal to 1/2 which is bigger than 2/5 or 4/10 1/3
4 0
2 years ago
(a) Michael bought 19 pounds of sugar for $8. How many dollars did he pay per pound
Dmitrij [34]

Answer:

A = 2.37500

B = 8.5

Step-by-step explanation:

Explanation A - 19 divided by 8 is 2.37500

Explanation B - 34 divided by 4 is 8.5

6 0
2 years ago
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