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otez555 [7]
3 years ago
13

What is the value of x + 3/4 when x=1/8

Mathematics
1 answer:
White raven [17]3 years ago
8 0

Answer: 7/8

Step-by-step explanation: This is a substitution problem, from the expression x + ³/₄, where x = ¹/₈, we now replace or substitute for x and then solve the expression fractionally, the expression now becomes

¹/₈ + ³/₄

Now , find the l. c. m. of the denominator 8 and 4

            1 + 6

        =  _____    

              8

          = 7/8

NOTE: To get 1 and 6, you find out how many times 8 can go in the l. c. m. and later multiplied the number of times by  the numerator which = 1.

And the number of times 4 can go in the l. c. m. (8) which is 2 times then multiplied by the numerator (3) = 6.

Adding 1 and 6 together gives 7/8.

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What method would best to solve x=5y. 2x-3y=7
ser-zykov [4K]

Answer:

substituting x=5y into 2x-3y=7, Answer: y = 1 x = 5

Step-by-step explanation:

2(5y)-3y=7

10y-3y=7

7y=7

y=1

substitute y=1 into x=5y

x=5(1)

x=5


8 0
4 years ago
Elmo has two different part tike jobs and he works 20 hours per week at each job. He earns $8 per hour at one job. Which express
natka813 [3]

Answer:

Earned = 160 + 20d

Step-by-step explanation:

Seeing as Elmo works 20 hours per week at each job, that means he worked 20 hours at the $8 job and 20 hours at the $d job.

First find how much he earned from his $8/hr job.

(20)8 = 160

Elmo earned $160 at this $8/hr job.

Next, we know he earns $d/hr at his other job, and he works 20 hours at that job as well.

(20)d = 20d

Add the earnings from both jobs together.

160 + 20d = total earnings

3 0
4 years ago
What is the solution of <br> y = 3x – 4 –3y = –9x + 12
AlexFokin [52]

9514 1404 393

Answer:

  any solution of y = 3x -4

Step-by-step explanation:

The two equations describe the same line. There are an infinite number of solutions. Any values of x and y that satisfy either equation will satisfy both equations.

__

The graph shows the lines in different colors and textures, so you can see they are the same line.

5 0
3 years ago
Given the follow statistics about scores on the last math test, what is the best description of the shape of the distribution?
julia-pushkina [17]

The shape of the distribution, is symmetric, is the best description of   statistics about scores.

<h3 /><h3>What is standard deviation ?</h3>

The standard deviation is the positive square root of the variance of this data set. Variance of a data set is the sum of squared differences of the data values from its mean to the total count of data values.

The given data in the problem is;

Mean = 78%

Standard deviation = 4%

Min = 64

Median = 78

Q1 = 72

Q3 = 84

Max = 99

The condition for the symmetric distribution is found as;

(\rm Q_2-Q_1)=Q_3-Q_2)

From the data we have;

(\rm Q_2-Q_1)=Q_3-Q_2)\\\\ (\rm Q_2-Q_1)= (\rm 84-78)= 6 \\\\ Q_3-Q_2)=(78-72) = 6 \\\\

So that , (\rm Q_2-Q_1)=Q_3-Q_2).

Hence, the condition of symmetry is followed.

To learn more about the symmetry, refer to the link;l

brainly.com/question/15970176

#SPJ2

7 0
3 years ago
What is 5(8)-2(15-8)​
luda_lava [24]

Answer:

This is the answer of your question. ☺☺

Step-by-step explanation:

40 -2*7

40 -14

26

7 0
3 years ago
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