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4 years ago

Does this equation has infinitely many solutions? x + 1 = 3x - x + 1

Mathematics

2 answers:

maw [93]4 years ago

6 0

Answer:

Step-by-step explanation:

x + 1 = 3x - x + 1

x + 1 = 2x + 1 {add/subtract the like terms}

x + 1 - 2x = 1

- x = 1 - 1

-x = 0

x = 0

ki77a [65]4 years ago

4 0

Answer:

No.

Step-by-step explanation:

x + 1 = 3x - x +1

x + 1 = 2x +1

-x -x

--------------------

1 = x + 1

-1 -1

-------------

0 = x

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Scores on a college entrance examination are normally distributed with a mean of 500 and a standard deviation of 100. What perce

Alla [95]

Answer:

The percentage is $P(350 < X 650 ) = 86.6\%$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 500$

The standard deviation is $\sigma = 100$

The percent of people who write this exam obtain scores between 350 and 650

$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

Generally

$\frac{X - \mu }{\sigma } = Z (The \ standardized \ value \ of \ X )$

$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

$P(350 < X 650 ) = P(-1.5$

$P(350 < X 650 ) = P(Z < 1.5) - P(Z < -1.5)$

From the z-table $P(Z < -1.5 ) = 0.066807$

and $P(Z < 1.5 ) = 0.93319$

=> $P(350 < X 650 ) = 0.93319 - 0.066807$

=> $P(350 < X 650 ) = 0.866$

Therefore the percentage is $P(350 < X 650 ) = 86.6\%$

3 0

4 years ago

It is said that a student’s college GPA (grade point index) can be predicted by his/her HOCS (higher- order cognitive skills) su

cricket20 [7]

Answer:

apart from using the hoc to predict the college students gpa, some other variables can be used

1. the students intelligent quotient

2. ability to remember

3. study time

4. gym practice

Step-by-step explanation:

1. the students intelligent quotient

gpa has a positive relationship with iq. they are both directly related. The more the iq of a a student, the greater is his ability to understand and have a good gpa. the slope will therefore be positive and be in an upward direction.

2. ability to remember

the gpa of students who have a good ability to remember but do not have a good grasp of the subject may not be high. the slope would be in a slightly upward direction

3. study time

gpa and practice have a positive relationship. the more a student studies, the more likelihood exists of having a better gpa. the slope would be upward bound.

4. gym practice

gpa and gym practice are not related so the slope would be in a downward direction.

when interpreting the direction of relationship after carrying out such an analysis, it is useful to watch out for the accompanying signs of the variables. if the sign of the beta coefficient is positive then a positive relationship with the dependent variable exists.

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4 years ago

The diagonals of a rhombus bisect each other of measures 8cm and 6cm .Find its perimeter. please help !!!!!!!!!!!!!!!!!!!!!!!!

Delvig [45]

Answer:

20 cm

Step-by-step explanation:

8/2 = 4

6/2 = 3

3 and 4 are the sides of the triangle (four triangles in rhombus)

$a^{2} + b^{2} = c^{2} \\4^{2} + 3^{2} = c^{2}$

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3 years ago

Brandon buys a radio for $44.57 in a state where the sales tax is 7%.

grigory [225]

Answer:

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Step-by-step explanation:

44.57 x 0.07 = 3.12

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3 years ago

The point (7,-9) lies on a circle. What is the length of the radius of this circle if

UNO [17]

I’m sorry I don’t know the answer sorry for the waisted time

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4 years ago

Does this equation has infinitely many solutions? x + 1 = 3x - x + 1​

Does this equation has infinitely many solutions? x + 1 = 3x - x + 1