MATHEMATICS MIDDLE SCHOOL

3X minus 2 X equals 40

Answers

Answer 1
Answer:

Answer:

x = 40

Step-by-step explanation:

collect the terms (3-2)x = 40

subtract the numbers 1x = 40

divide from both side 1x/1 = 40/1

solution x = 40
Answer 2
Answer: 3X - 2X =40 subtract 3X from 2X to get 1X or just X. So X=40

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A cable installer chargers $52.50 per hour plus a $75.00 service charge. your father's firm hires him to hook up his company's internet service. Find the total charges if it takes the cable installer 4.5 hours to complete the task

Answers

So the cable installer charges 52.50 an hour. meaning you would multiply that by whatever amount of hours he will work. so 52.50 times 4.5 hours equals $236.25. Now he also charges an extra fee for the service, So we add 75 dollars onto that making it $311.25.

If you want it in formula form here you go

y represent total amount in the end and x equals amount of hours

y=52.50x + 75

y = 52.50(4.5) + 75

y = 236.25 + 75

y = 311.25

If x^(2) - 2 = 2^(2/3) + 2(-2/3) prove that x = 2^(1/3)+2^(-1/3)

Answers

Step-by-step explanation:

x² - 2 = 2^(2/3) + 2^(-2/3)

x² = 2^(2/3) + 2 + 2^(-2/3)

x² = (2^(1/3))² + 2 × 2^(1/3) × 2^(-1/3) +

(2^(-1/3))² (It is in the form of a²+2ab+b²)

x² = (2^(1/3) + 2^(-1/3))²

x = 2^(1/3) + 2^(-1/3)

The question asks to simplify the following (imagine as fraction form / sign stands for fraction form)a+6/c/2a+6/2c

Answers

a+\frac{\frac{6}c}{2a}+(6)/(2c)\n\n=a+\frac{\frac{6}a}{2c}+(6)/(2c)\n\n=a+\frac{6\left(1+\frac{1}a\right)}{2c}\n\n\boxed{a+\frac{\frac{6}c}{2a}+(6)/(2c)=a+\frac{3\left(1+\frac{1}a\right)}{c}}

Is 3/47 a rational number

Answers

Yes, it is. 

Rational numbers are in the form p/q where p and q are both real numbers, and q does not equal to 0.

Two feet is what percent of a yard? And please explain how I find the answer

Answers

percent means parts out of 100
x%=x/100

1 yard=3 feet
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multiply both sides by 100
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divide both sides by 3
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answer is 66.66666%

a pie was cut into 8 slices equally if ruben are 3/4 of the pie how many slices did he eat? write the answer in eighths

Answers

If  the pie is cut into 8 slices he ate 6/8 of the pie.
The answer is 6Make the 8 = 8/1 * 3/4 = 24/4 = 6
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