3 years ago

Help!!!!!!!!!!! please

Mathematics

1 answer:

zloy xaker [14]3 years ago

4 0

The answer is c I believe

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Please help!!!!!!!!!!!!!!!!

rosijanka [135]

Answer:

Step-by-step explanation:

6 0

3 years ago

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Is quadrilateral jklm the result of a dilation of quadrilateral abcd by a scale factor of 2? why or why not?

4vir4ik [10]

No. Because sides JM and KL have different slopes from sides AD and BC .

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

For AD:

We have the points A(2, -2) and D(1, -4). Substitute:

$m=\dfrac{-4-(-2)}{1-2}=\dfrac{-2}{-1}=2$

For JM:

We have the points J(4, -4) and M(2, -9). Substitute:

$m=\dfrac{-9-(-4)}{2-4}=\dfrac{-5}{-2}=2.5$

$2\neq2.5$

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Another argument.

No. Because the MJ is not twice as long as AD.

The formula of the length of a segment:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The length of AD:

$|AD|=\sqrt{(1-2)^2+(-4-(-2))^2}=\sqrt{(-1)^2+(-2)^2}=\sqrt{1+4}=\sqrt5$

The length of MJ:

$|MJ|=\sqrt{(2-4)^2+(-9-(-4))^2}=\sqrt{(-2)^2+(-5)^2}=\sqrt{4+25}=\sqrt{29}$

$\sqrt{29}\neq2\sqrt5$

4 0

4 years ago

From a group of 11 people, you randomly select 2 of them. What is the probability that they are the 2 oldest people in the group

Artemon [7]

Answer:

2/11

Step-by-step explanation:

Probability is the LIKELIHOOD of an event.

According to the word problem, there are 11 people in total and 2 of them are being selected.

The probability of them being the 2 oldest people is 2 in 11, or 2/11.

8 0

3 years ago

What is the value of the expression below when a is 3, b is 25, and c is 5?

jarptica [38.1K]

Answer:

Step-by-step explanation:

4 0

3 years ago

5x6-2x3 where would i put the ( ) to make 84

krok68 [10]

(5*6-2)*3 = 84
(30-2)*3
28*3 = 84
well explained by hacker below

6 0

4 years ago

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