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3 years ago

Anyone know this ???

Mathematics

1 answer:

mr Goodwill [35]3 years ago

7 0

Answer:

B and C

Step-by-step explanation:

The 2 smallest numbers have to add up to be bigger then the largest number in the set for it to be a triangle! I hope this helps!

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Indicate the equation of the line that is the perpendicular bisector of the segment with endpoints (4, 1) and (2, -5).

PtichkaEL [24]

Okay to find the perpendicular bisector of a segment you first need to find the slope of the reference segment.

m=(y2-y1)/(x2-x1) in this case:

m=(-5-1)/(2-4)

m=-6/-2

m=3

Now for the the bisector line to be perpendicular its slope must be the negative reciprocal of the reference segment, mathematically:

m1*m2=-1 in this case:

3m=-1

m=-1/3

So now we know that the slope is -1/3 we need to find the midpoint of the line segment that we are bisecting. The midpoint is simply the average of the coordinates of the endpoints, mathematically:

mp=((x1+x2)/2, (y1+y2)/2), in this case:

mp=((4+2)/2, (1-5)/2)

mp=(6/2, -4/2)

mp=(3,-2)

So our bisector must pass through the midpoint, or (3,-2) and have a slope of -1/3 so we can say:

y=mx+b, where m=slope and b=y-intercept, and given what we know:

-2=(-1/3)3+b

-2=-3/3+b

-2=-1+b

-1=b

So now we have the complete equation of the perpendicular bisector...

y=-x/3-1 or more neatly in my opinion :P

y=(-x-3)/3

4 0

3 years ago

Read 2 more answers

Solve this quadratic equation.<br><br><img src="https://tex.z-dn.net/?f=2x%20%7B%7D%5E%7B2%7D%20%20-%205x%20%2B%202%20%3D%200" i

wariber [46]

Answer:

x = 1/2 or 2

Step-by-step explanation:

You can factor this as ...

2x^2 -4x -x +2 = 0 . . . rewrite the middle term to enable factoring

2x(x -2) -1(x -2) = 0 . . . . factor by grouping

(2x -1)(x -2) = 0 . . . . factor out (x -2)

x = 1/2, 2 . . . . . . values of x that make the factors zero

4 0

4 years ago

Fie A, B, C, D patru puncte necoplanare.

rodikova [14]

Answer:

Hlooo em dng like the same time as a great day of the same time as a great day of the same time as a great day may I have a good time for

8 0

3 years ago

Write as a mathematical equation. The product of 5 and x is 25.

pickupchik [31]

answer:

5x=25

Divide 5 from both sides

5x/5=25/5

x=5

4 0

3 years ago

If the distribution is really N ( 5.43 , 0.54 ) , N(5.43,0.54), what proportion of observations would be less than 5.05 ? 5.05?

Ipatiy [6.2K]

Answer:

$P(X$

And we can use the following excel code to find the answer: "=NORM.DIST(-0.704,0,1,TRUE)"

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable of interest for a population, and for this case we know the distribution for X is given by:

$X \sim N(5.43,0.54)$