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3 years ago

Please answer correctly !!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

solong [7]3 years ago

8 0

Answer:

That looks like interior angle to me

x = 47 (since interior angles are congruent)

Step-by-step explanation:

I am really sleepy... :/

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Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0m/s.

elixir [45]

In this question all required information's are already provided. Based on these details the answer to the question can be easily determined. Let us now write down all the information's that are already given.
Mass of the roller coaster = 1000 kg
Velocity of the roller coaster = 20.0 m/s
We know the formula for finding the kinetic energy is
Kinetic energy = 0.5 * mass * (velocity) ^2
   = 0.5 * 1000 * (20)^2
   = 0.5 * 1000 * 400
   = 200000 Joules
So the Kinetic energy of the roller coaster is 200000 joules.

6 0

3 years ago

The midpoint AB is M (-1,1). If the coordinates of A are (-6,-3), what are the coordinates of B

Ratling [72]

Answer:

coordinates of B is ( 4,5)

Step-by-step explanation:

If there two points (x1,y1) and (x2,y2) on a plane then coordinates of mid point is given by

m = (x1+x2)/2 , (y1+y2)/2

Given

m = (-1,1)

A= (-6, -3)

we have to point b

let point b be (x,y)

Then m (-1,1) is given by (-6+x)/2 , (-3+y)/2

(-6+x)/2 = -1

-6 + x = 2*-1 = -2

x = -2+6 = 4

also

(-3+y)/2 = 1

=> -3 + y = 2

=> y = 2 + 3 = 5

Thus , coordinates of B is ( 4,5) answer

5 0

3 years ago

Tood knows that the ratio of boys and girls in his class is 3:5. Since 12 of the students are boys, he says there must be 36 stu

Vesna [10]

Answer:

=99

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

I need. Help it’s really hard

9966 [12]

Answer:

31/50cm probably?

Edit:

Well stratch, that I don't know, I'm sorry.

6 0

3 years ago

Read 2 more answers

Weights of female cats of a certain breed are normally distributed with mean 4.1 kg and standard deviation 0.6 kg.

Diano4ka-milaya [45]

The proportion is 0.4401.

We find z-scores that correspond with both ends of this interval. Z-scores are given using the formula:

$z=\frac{X-\mu}{\sigma}$

For the lower end,

$z=\fracc{3.7-4.1}{0.6}=\frac{-0.4}{0.6}=-0.67$

The proportion of scores to the left of this number is 0.2514.

For the higher end, the z-score is

$z=\frac{4.4-4.1}{0.6}=\frac{0.3}{0.6}=0.5$

The proportion of scores to the left of this number is 0.6915.

To find just the proportion of scores between these two, we subtract;

0.6915-0.2514 = 0.4401.

3 0

3 years ago