MATHEMATICS MIDDLE SCHOOL

I think of two numbers, x and y
x-y is half of x+y
Write x in terms of y

Answers

Answer 1
Answer: You said that (x - y) is half of (x+ y) .  I can work with that.

(x - y) = 1/2 (x + y)

x - y = 1/2 x + 1/2 y

Multiply each side by 2 :

2x - 2y = x + y

Subtract 'x' from each side:

x - 2y = y

Add 2y to each side:

x = 3y

They can be ANY two numbers, as long as 'x' is triple whatever 'y' is.

Let's try a couple:

x = 18, y = 6
(x - y) = 12
(x + y) = 24
12 = 1/2 of 24x
yay !

x = 30, y = 10
(x - y) = 20
(x + y) = 40
20 = 1/2 of 40
yay !

x = 3π, y = π
(x - y) = 2π
(x + y) = 4π
2π = 1/2 of 4π
yay !
Answer 2
Answer: X-y =x+y all over 2
Add the y onto the other side making x = x+y all over 2 +y
Then you times everything by 2
2x = x+2y
Subtract x from both sides giving you
X=2y

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How does finding the greatest common factor help you to solve real-world problems?

Answers

Assuming you're asking about the GCF (Greatest Common Factor) Greatest Common Factors (GCF) can help you in real life problems with fractions and measuring things. Below is a real life example.Let's say you want to send cookies into one of two classes and want to make sure you have an even number per student. You know that one class has 8 students and the other has 10 students. How many cookies do you make?Answer: All you have to do is figure out the biggest number that goes into each number equally (division). In this case the answer would be 2. If i helped please comment below  And i hope i helped you!

At a track meet, Jacob and Daniel complete in the 220 m hurdles. Daniel finishes in 3/4 of a minute. Jacob finishes with 5/12 of a minute remaining. Who ran the race in the faster time. Bonus: Express the difference in their times as a fraction of a minute.

Answers

Jacob ran the race in the faster time

Further Explanation:

Daniel complete the hurdle at = 3/4 of a minute

Recall, 1 minute = 60 seconds

Therefore, Daniel complete the hurdle at 3/4 of 60 [secs]

= 3/4 x 60  

= 3 x 60 ÷ 4

= 180 ÷ 4

= 45 seconds

Jacob complete the hurdle with a remainder = 5/12 of a minute  

Recall, 1 minute = 60 seconds

Therefore, Jacob complete the hurdle with the remainder of 5/12 of 60 [secs]

= 5/12 x 60

= 5 x 60 ÷ 12

= 300 ÷ 12

= 25 seconds  

To find out how many minute Jacob used to complete the race:

60 seconds – 25 seconds=

= 35 seconds  

Since Daniel complete the race in 45 seconds, and Jacob complete the race in 35 seconds, in Athletics, the fastest of the two in completing the race is Jacob because, the time at which he complete the race is not greater than the time at which Daniel complete the race. And as such, the fastest of the two (Jacob) whose time is lesser is adjudged the winner of the race.

Deriving the difference in their times as a fraction of a minute:

The difference in their times is expressed as:

Daniel’s time [45 seconds] – Jacob’s time [35 seconds]

Therefore,

= 45 – 35

= 10 seconds  

Expressing the difference as a fraction of a minute:

Since 1 minute = 60 seconds

Hence, the fraction would be:

10/60

= 1/6

The given answers were derived as a result of the usage of Multiplication, Division and Subtraction, being functions of a number problem in mathematics.

LEARN MORE:

Track brainly.com/question/362542

KEYWORDS:

  • Seconds
  • Minute
  • Fraction
  • Difference
  • Time
Well, 60(sec.) divided by 4 = 15. 15x3= 45 seconds is Daniel's time.
60 divided by 12 = 5. 5x5 = 25 seconds is Jacob's time. Jacob finished faster. Hope this helps!

Bobby made cookies. The circumferences of cookies are 6 cm. What is the diameter of the cookies?

Answers

the circumference is d*pi so the diameter is 6/pi
We have circumference= diameter* π 
⇒ 6 = diameter* π
⇒ Diameter= 6/π

The diameter of the cookies is 6/π~

Factor (3x+2)(3x^2-6x+4)​

Answers

Answer:

(3x+2)(3x-2)(x-2)

Step-by-step explanation:

1. you do trinomial factoring for the second factor (the one with three terms)

2. you put a 3x in one parentheses and an x in the other and find all the numbers that make positive 4.

3. Now foil (first,outside,inside,last) and see which ones match the factor above

4. You should be left with three factors at the end.

What is the value of x?
Plssss help me :(

Answers

Answer:I believe it’s 40 degrees

Step-by-step explanation:

70

-30

=

40
The answer is 40 degrees
Hope this helped

What is the value of the expression when p = –16 and q = 4?

4p/q

Answers

so subsitute
(4 times -16)/4=-64/4=-32/2=-16/1=-16
or
(4 times -16)/4=4/4 times -16/1=1 times -16=-16
answer is -16
We are simply trying to solve:      4p/q.

p = -16, q = 4.

= 4p/q  =  4 * -16 / 4 =  -16.    4 below divides into 4 at top. Left with -16 at top.

Answer = -16.
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