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2 years ago

Which statement proves that polygon ABCD is not a rectangle

Mathematics

1 answer:

Elenna [48]2 years ago

8 0

Answer:

ummm u did not add the statements to the question

Step-by-step explanation:

but a polygon ABCD might not be a rectangle if:

opposite sides of polygon ABCD are not of equal lengths
all angles of the polygon may not be right angles (90°)
opposite sides may not be parallel

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Which represents all the values of x that make the rational expression 2x-4 over x-5 undefined?

julsineya [31]

X=5 because the denominator can never equal zero or it will be undefined. and 5-5=0

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2 years ago

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the probability that a twelve year old has a brother or sister is 25%. suppose you survey 300 twelve year olds. about how many d

Genrish500 [490]

Answer:

n(B U S) = 75

Step-by-step explanation:

Explanation:-

Probability:-

P(E) = $\frac{number of elements events in E}{total number of elementary events in the random experiment}$

$P(E) = \frac{m}{n}$

Let 'B' be the event of having twelve year old brother

Let 'S' be the event of having twelve year old sister

given data P(BUS) = 0.25

given total survey n(survey) = 300

we have to find the value is n(BUS) =?

we will use probability definition we get, P( BUS) = $\frac{n(BUS)}{n(survey)}$

substitute given values, we will get solution

$0.25 = \frac{n(BUS)}{300}$

after cross multiplication , we get

n(BUS) = 0.25 X 300

n(BUS) = 75

3 0

2 years ago

(9, 2) and (3,-5). find the distance between the points

adell [148]

Answer:

Is the slopes your doing

Step-by-step explanation:

6 0

3 years ago

What percent of 126 is 22

makkiz [27]

17% ? Idont know if its 22 divided by 126 or 126 divided by 22

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What is the vertex of the quadratic function f(x)=(x-8)(x-2) ?

Nata [24]

Multiply out f(x)=(x-8)(x-2): f(x) = x^2 - 8x - 2x + 16, or f(x) = 1x^2 - 10x + 16.
Thus, a=1, b= -10 and c=16.

One of several ways to find the vertex involves "completing the square."

x^2 - 10x + 16 = x^2 - 10x + 25 - 25 + 16, or y = (x-5)^2 -9, or y+9=(x-5)^2.

Compare this result to y-k = a(x-h)^2. We see that h=5 and k=-9.

Thus, the vertex is at (h,k) = (5, -9).

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2 years ago

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