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3 years ago

Determine the x- and y-intercepts for the two lines below and then use them to graph each line.

Mathematics

1 answer:

zavuch27 [327]3 years ago

7 0

Answer:

a. x - 2y = 4

Step-by-step explanation:

carry on learning

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Which equation of the least squares regression line most closely matches the data set?

Rudiy27

Answer: y = 3.5 x+ 43.8

Step-by-step explanation:

Here x represents the number of years after 1990

Thus, we get the table that is used to find the equation will be,

x 0 2 4 6 8

y 45 51 57 61 75

Let the equation that shows the above data,

y = b + a x ---------(1)

$\text{Where, }a=\frac{\sum y \sum x^2-\sum x \sum xy}{n(\sum x^2)-(\sum x)^2}$

$\text{And, }b = \frac{\sum xy - \sum x\sum y}{n\sum x^2 - (\sum x)^2}$

By the above table,

$\sum x = 20$

$\sum xy = 1296$

$\sum x^2 = 120$

$\sum y = 289$

By substituting these values in the above value of a and b,

We get b = 43.8 and a = 3.5

Substitute this value in equation (1)

we get, the equation that shows the given data is,

y = 3.5 x + 43.8

⇒ Option (3) is correct.

4 0

3 years ago

Read 2 more answers

How much money will you have at the end of one year if interest is compounded semiannually at 10% on a $600 deposit?

Masja [62]

The formula required to answer this is:
$A=P(1+\frac{r}{n})^{nt}$
where A is the amount of the principal P after n compounding periods per year at r interest rate (as a decimal fraction).
Plugging in the given values, we get:
$A=600(1+\frac{0.1}{2})^{2\times1}=661.5$
Rounding to the nearest dollar, we get $662.00. Therefore a is the best answer choice.

6 0

3 years ago

Please answer this correctly

Mila [183]

Answer:

50%

Step-by-step explanation:

not even = 2 nums

pnoteven = 2 ÷ 4 × 100

3 0

3 years ago

Read 2 more answers