What is the LCM of 20 and 40?

Answers

Answer 1

Answer: answer is 40

20=2*2*5
40=2*2*2*5

40 is answer
LCM=least common multiplul

Answer 2

Answer: 20: 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240,…
40: 40, 80, 120, 160, 200, 240, 280, 320, 360, 400, 440,…

LCM(20, 40) = 40

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I need help with slope

Answers

We should know the slope formula:

m= $(y2- y1)/(x2-x1)$

Now plug in the points accordingly:
= $(-1-4)/(1-(-4))$
= $(-5)/(5)$

It can be simplified further:
$(-5)/(5)$ = -1

Slope of the line that passes through (-4,4) and (1,-1) is -1

What is the equation of the line that passes through the points (–2, 2) and (0, 5)?

Answers

Answer:

The equation of line is given by

$y=(3)/(2)x+5$

Step-by-step explanation:

We have been given the points (–2, 2) and (0, 5) and we have to find the equation of the line.

Let us first find the slope of the line using the formula

$m=(y_2-y_1)/(x_2-x_2)$

On substituting the values, we get

$m=(5-2)/(0+2)$

$m=(3)/(2)$

Now, using the point slope form, the equation of line is given by

$y-y_1=m(x-x_1)\ny-2=(3)/(2) (x+2)\n\ny-2=(3)/(2)x+3\n\ny=(3)/(2)x+5$

Therefore, the equation of line is given by

$y=(3)/(2)x+5$

Hello,

The slope= (5-2)/(0+2)=3/2

Equation is y-2=3/2(x+2) or y=3x/2+5

What is the simplified square root of 1/56?

Answers

$\sqrt { \frac { 1 }{ 56 } } \n \n =\frac { \sqrt { 1 } }{ \sqrt { 56 } } \n \n =\frac { 1 }{ \sqrt { 7\cdot 8 } } \n \n =\frac { 1 }{ \sqrt { 7\cdot 2\cdot 4 } }$

$\n \n =\frac { 1 }{ \sqrt { 14\cdot 4 } } \n \n =\frac { 1 }{ \sqrt { 14 } \sqrt { 4 } } \n \n =\frac { 1 }{ 2\cdot \sqrt { 14 } } \n \n =\frac { 1 }{ 2\cdot \sqrt { 14 } } \cdot \frac { \sqrt { 14 } }{ \sqrt { 14 } } \n \n =\frac { \sqrt { 14 } }{ 2\cdot 14 } \n \n =\frac { \sqrt { 14 } }{ 28 }$

Steven is exploring the impact of neglect on academic achievement for grade school children. He will be using a nonprobability sampling procedure, due in-part to the sensitive nature of the research topic. He begins the sampling process by selecting research participants who are the easiest to find. What type of sampling procedure is he using? a. Convenience sampling
b. Criterion sampling
c. Snowball sampling
d. Quota sampling

Answers

Answer:

A. convenience sampling

Step-by-step explanation:

The sampling procedure used by Steven is convenience sampling.

Convenience sampling is a sampling method, where samples are drawn from the closest samples available.

For example: A teacher surveying for something chooses samples from her own class. The students of her own class are the closest available samples.

If there were 300 accidents in 1967 and 380 in 1968, what is the percent increase?

Answers

Answer:

As per the statement:

If there were 300 accidents in 1967 and 380 in 1968.

Number of accident in 1967= 300

Number of accident in 1968= 380

then;

Increase in accident = 380-300 = 80

Using formula to find the percent increase:

$\text{Increase in percent} = \frac{\text{Increase in accident}}{\text{Number of accident in 1967}} * 100$

Substitute the given values we have;

$\text{Increase in percent} = (80)/(300) * 100$

Simplify:

$\text{Increase in percent} = (80)/(3) = 26(2)/(3) \%$

Therefore, $26(2)/(3) \%$ is the percent increase

First find the amount of increase: 380-300=80. Then divide the amount of increase by the original amount: 80/300=.266666667. Normally you round to the tenths place: .27. Then make it a percent: .27=27%. The percent of increase is 27% :) hope this helps

Y varies directly as x , y= 25 when x=5. Determine y when x= 13