MATHEMATICS MIDDLE SCHOOL

Solve for x.

7x/2+ 5 = 8

Answers

Answer 1

Answer:

7x/2+ 5 = 8

subtract 5 from each side

7x/2 =3

multiply by 2 on each side

7x = 6

divide by 7

x = 6/7

Answer 2

Answer:

The value of x would be equal to 6/7.

WE know that equation is an expression that shows the relationship between two or more numbers and variables and mathematical equation is a statement with two equal sides and an equal sign in between.

We are given the equation as;

7x/2+ 5 = 8

Now subtract 5 from each side

7x/2 =3

To multiply by 2 on each side

7x = 6

Then divide by 7

x = 6/7

The solution will be 6/7.

Learn more about equations here;

brainly.com/question/25180086

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Estimate the product of 68 and 42

Answers

We can round 68 to 70
And round 42 to 40

70 x 40 = 2800

68(42)= 2856
The number 68 is multiplied by 42 and is equal to 2856

5) What point would be the
reflection, across the x-axis,
for the point (-8,-7)?

Answers

Answer: (8,-7)

Step-by-step explanation: Since you are reflecting over the x-axis, the x coordinate stays the same, but the y coordinate does change. Instead of it being negative, the eight would become positive.

Answer:it’s -7,-1 and -7,1

Step-by-step explanation:

PLEASE HELP ME! How do you factor out the coefficient of a variable?? Example: 5c - 15

Answers

divide both by a number that can go into both terms so it will be 5 .
$(5c-15)/(5)$ which is 5(c-3)

$5c-15=\n5(c-3)$

Which expression is equivalent to the given expression?

13(19 – x)

Answers

$13(19-x)=13\cdot19-13\cdot x=247-13x$

In a certain class of students, there are 12 boys from wilmette, 5 girls from kenilworth, 7 girls from wilmette, 4 boys from Glencoe, 2 boys from kenilworth and 9 girls from Glencoe. If the teacher calls upon a student to answer a question, what is the probability that the student will be from kenilworth?

Answers

Answer:

7/39 = 17.94%

Step-by-step explanation:

Town Students Relative Frequency

Wilmette 12 boys + 7 girls = 19 19/39 = 48.72%

Glencoe 9 girls + 4 boys = 13 13/39 = 33.33%

Kenilworth 2 boys + 5 girls = 7 7/39 = 17.94%

Total 39 students 39/39 = 100%

Another approach to solve probability is the Relative Frequency. A frequency is the number of times an event occurs. To solve for the relative frequency, it’s the ratio of the frequency of an event to the total outcomes. From the question, it is clear that for each town, it was subdivided into boys and girls but the word students represent the combined number of boys and girls for a particular town. so finding the probability that a student called at random to answer a question is from kenilworth is simply the ratio of students from kenilworth over the total number of students in the class.

The probability is 5/39

A bacterial culture starts with 3000 bacteria and increases to 48,000 after 3 hours, find the doubling time: