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harina [27]
3 years ago
14

Someone please help asap

Mathematics
1 answer:
andrew-mc [135]3 years ago
6 0

Answer:

the second one

Step-by-step explanation:

because g(x) and f(x) is bout the same

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a radioactive sample contains 3.00 g of pure 11c, which has a half-life of 20.4 min. (a) how many moles of 11c are present initi
sveta [45]

The number of mole of pure 11C (carbon-11) initially present is 0.2727 mole

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation

Mole = mass / molar mass

With the above formula, we can obtain the number of mole of pure 11C. Detail below:

<h3>How to determine the mole of 11C</h3>

From the question given, the following data were obtained:

  • Molar mass of 11C = 11 g/mol
  • Mass of 11C = 3 g
  • Mole of 11C =?

Mole = mass / molar mass

Mole = 3 / 11

Mole = 0.2727 mole

Therefore, the number of mole of pure 11C initially present is 0.2727 mole

Learn more about mole:

brainly.com/question/13314627

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8 0
1 year ago
The graph below plots the values of y for different values of x: (look at graph picture)
Dima020 [189]

Answer:

A: x and y have a strong, positive correlation

Step-by-step explanation:

Correlation coefficient measures the relation between   two variable.

it signifies how the value of one variable will change when the change in other variable is made.

Its value ranges from 0 to 1

  1. 0 represent no relation
  2. 1 represent strong relation

thus, as value increases from 0 to 1 , correlation strength increases.

Correlation coefficient can be negative and positive

  1. negative relation signifies that as value of one variable increases then the value of other will decrease and vice-versa
  2. positive relation signifies that as value of one variable increases then the value of other will also increase and vice versa

Given, that correlation coefficient between x and y  is  0.9

since there is no negative sign it means there is positive correlation

value is 0.9

as 0.9 is nearer to  1, it is clear that relation is strong.

based on above discussion

option A

 x and y have a strong, positive correlation is correct answer

If we look at graph we can see that as x increases y also increases.

the rate of increase of value of y in response of x is also high.

Thus, graph also shows that there is strong positive correlation  

5 0
3 years ago
The lengths of the sides of a triangle are given below. Classify the triangle as acute, obtuse, or right.
enot [183]

Answer:

  • B. Obtuse Triangle

Step-by-step explanation:

<u>Use Pythagorean to identify if the triangle is right:</u>

  • 9² = 7² + 3²
  • 81 = 58

We see the triangle is <u>not </u>right and the difference of the squares tells us the angle opposite to side with measure of 9 is greater than 90°.

It means the triangle is <u>obtuse</u>.

Correct choice is B

8 0
3 years ago
Which function is non-linear? A q=5p^2 B q=8p−9 C q=10p−1 D q=2p+10
Artemon [7]
2 is the awnser too this
3 0
2 years ago
What is the area of the polygon below ?<br><br> Please help
saveliy_v [14]
I just know the missing one is 15 and the area inside was like 157
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