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3 years ago

| 4x +2|=10 confirm your solution using a graph or table

Mathematics

2 answers:

kicyunya [14]3 years ago

8 0

Answer:

x = -3 or +2

Step-by-step explanation:

Such an equation resolves into two equations. The argument of the absolute value function can be either positive or negative, so there is one equation for each case.

4x +2 = 10

4x = 8 . . . . subtract 2

x = 2 . . . . . divide by 4

4x +2 = -10

4x = -12 . . . subtract 2

x = -3 . . . . . divide by 4

The two solutions are x=-3 and x=2.

klio [65]3 years ago

5 0

Remove the absolute value term. 4x+2=10 solve this, x=2

Set up the negative portion 4x+2= -10 solve this, x= -3

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saveliy_v [14]

Answer:

$\textbf{C}\quad\dfrac{13}{20}=\dfrac{25}{40} \qquad\textbf{FALSE}$

Step-by-step explanation:

Each of the equations represents equivalent fractions except the one in choice C.

13/20 = 26/40, not 25/40.

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IMO, one should never use an equal sign where things are not equal--unless there is a clear indication you understand they are not equal. The equal sign should be regarded as a sacred symbol, with very specific rules as to its meaning and use.

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3 years ago

The table gives the scores of 6 students from a class of 25 in a competitive exam. the point estimate of the mean score for the

Ymorist [56]

The mean of the scores if 6 students in a competitive exam is 25 marks.

Given scores of 6 students are: 10,30,50,40,20 in a competitive exam.

We have to find out the mean of the mark of 6 students in a competitive exam.

Mean is the sum of all the values in a set of data, such as numbers, measurements, divided by the number of values. It is also known as average.

Mean=∑X/n

∑X=10+30+50+40+20

=150

N=6

Now to calculate the mean we have to divide 150 by number of students which is 6.

Mean=150/6

=25 marks.

Hence the mean of the scores of 6 students is 25 marks.

Learn more about mean at brainly.com/question/1136789

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Question is incomplete as it should include :

Marks of students =10,30,50,40,20.

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1 year ago

-2x+3=9. What does x equal?

Dimas [21]

Answer:

Step-by-step explanation:

$- 2x + 3 = 9 \\ - 2x = 9 - 3 \\ - 2x = 6 \\ \frac{ - 2x}{ - 2} = \frac{6}{ - 2}$

$x = - 3$

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3 years ago

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leonid [27]

Answer:

i would say the 3rd one

Step-by-step explanation:

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3 years ago

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iris [78.8K]

Answer:

Step-by-step explanation:

The ray created by line BC has two 180° sides. Side AC intersects this ray and forms two angles. We can find this second angle by subtracting 148 from 180 to get 32.

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3 years ago

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