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Westkost [7]
4 years ago
12

I need help not sure what to do

Mathematics
2 answers:
uysha [10]4 years ago
8 0

Answer:

x = 23

Step-by-step explanation:

x + 11 = 23 + 11 = 34

3(23) - 35 = 34

How did I get that?

x+11 = 3x - 35

x+ 11 +35 = 3x - 35 +35

x+46 = 3x

x - x + 46 = 3x + -x

46 = 2x

46 / 2 = 2x / 2

x = 23

I hope this helps!

fredd [130]4 years ago
4 0

Answer:

x=23

(x+11)=34

(3x-35)=34

Step-by-step explanation:

Beause these angles are vertical angles, they are equal.

x+11=3x-35

subtract x from both sides

11=2x-35

add 35 to both sides

46=2x

divide both sides by 2

x=23

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A line passes through (-2,7) and had a slope of -1
balu736 [363]

Answer:

y=-x+5 if parallel and perpendicular

if needed in point slope form : y-7 = -1(x+2)

Step-by-step explanation:

4 0
3 years ago
The time of a pendulum varies as the square root of its length. If the length if a pendulum which beats 15seconds is 9cm, find t
8090 [49]

Answer:

length= 3.7 ft.

Step-by-step explanation:

T= (square root of length) * k

1.8 seconds = (square root of 3) * k

k= 1.8 seconds / (square root of 3)

a.) T= (square root of 11) k

substituting k:

T=(square root of 11) * 1.8 seconds / (square of 3)

T= 3.4 seconds

b.) 2 seconds = (square root of length) k

substituting k:

2 seconds =(square root of length) 1.8 seconds / (square root of 3)

Divide the equation by 1.8 seconds / (square root of 3):

2 seconds / [1.8 seconds / (square root of 3)] = (square root of length)

10(square root of 3) / 9 = (square root of length)

square both sides:

100/7 ft= length

length= 3.7 ft.

Hope this helps.

7 0
3 years ago
Debate the following statement: "Correlation means Causation." Determine whether this statement is true or false, and provide re
Pachacha [2.7K]

Answer:

Thats FALSE.

The concept CORRELATION not automatically means CAUSATION.

Step-by-step explanation:

Previous concepts

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

Solution to the problem

Some useful concepts are:

Correlation is a statistical measure described with a number that describes the size and direction of a relationship between two or more variables. The correlation between variables, NOT mean that the change in one variable is the cause of the change in the values of the other variable.

Causation is a term refered to one event as the result of the occurrence of the other event for example, there is a causal relationship between event A and B like a cause and effect. One important thing to mention here is that the causation is not an easy concept to measure.

"The difference between the two types of relationships are easy to identify since one can be measured with a numerical value and the other no (Here is one example: smoking causes an increase in the risk of developing lung cancer), or it can correlate with another ( smoking is correlated with alcoholism, but it does not cause alcoholism)".

So is clear that the concept CORRELATION not automatically means CAUSATION.

6 0
3 years ago
34.09 what is the place value of the 3
babunello [35]
It is the hundreds place
6 0
3 years ago
Independent Practice
Maru [420]

Answer: THE ANSWER IS D. Yes; no value in the domain corresponds to more than one value in the range.

Find the domain and range.

Domain:

{ − 2 ,  3 ,  − 0.5 ,  4 }

Range:

{ 9 }

Step-by-step explanation: ITS NOT A OR C

Determine if the relation is a function.

The relation is a function.

5 0
3 years ago
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