MATHEMATICS HIGH SCHOOL

1 pound = 100 penny= 10 penny x 10 penny
= 1/10 pound x 1/10 pound
= 1/100 pound
= 1 penny

=> 1 pound = 1 penny
How is this possible if 1 pound = 100 pennies

Answers

Answer 1
Answer: 100penny\ isn't\ 10penny\ *\ 10penny\n\n100penny=10\ *\ 10penny\n-------------------\n\n10penny\ *\ 10penny=100penny^2!!!!

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One half Of a number added to two thirds Of The number Is 21 . Find The number.

Answers

The number would be 18.
Half of 18 = 9
Two thirds of 18 = 12
9 + 12 = 21


18. 1/2 of 18 is 9. 1/3 is 6. 6+6+9 = 21

Factor completely 49x2 − 81

Answers

49x2 - 81
(7x - 9)(7x + 9)

Answer:

(7x + 9)(7x -9)

Step-by-step explanation:

What is the answer when you get the same number on bboth sides of a equation?

Answers

if there are no variables remaining and the left side equals the right side, then there are Infinite Solutions.

if there are no variables remaining and the left side does NOT equal the right side, then there are NO Solutions.

X+2 over 3 = 8/5 solve for x

Answers

(x+2)/3 = 8/5

Multiply each side by 3 :

(x+2) = 24/5

Remove the parentheses on the left side:

x + 2 = 24/5

Subtract 2 from each side:  (Express '2' as '10/5')

x = 24/5 - 10/5 = 14/5 = 2.8


x=14/5

It is this because you would have to first multiply each side by 3, making the equation x+2=24/5, or 4 and 4/5.

Then you would have to subtract two from each side, making x=2 and 4/5, or 14/5

(please help.) (I screenshot the question and choices )

Answers

The second answer on the list is the correct one.

John can service a television and a cable box in one hour. It took him four hours yesterday to service two televisions and ten cable boxes. How many minutes does John need to service a cable box?

Answers

For this item, we let x be the number of minutes he can service a television and y be the minutes he can service a cable box. Then, the system of linear equation that would best represent the given above is,
                                x + y = 60 
                                2x + 10 y = (4)(60)
The values of x and y from the equations are 45 and 15 minutes, respectively. Therefore, John needs 15 minutes to service a cable box. 
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