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LekaFEV [45]
3 years ago
11

If x+y=10 and x-y=6 , what is the value of x³-y³​

Mathematics
1 answer:
ohaa [14]3 years ago
6 0

Answer:

\huge\boxed{x^3-y^3=508}

Step-by-step explanation:

\underline{+\left\{\begin{array}{ccc}x+y=10\\x-y=6\end{array}\right}\qquad|\text{add the sides  of the equations}\\.\qquad2x=16\qquad|\text{divide both sides by 2}\\.\qquad\boxed{x=8}\\\\\text{Substitute it to the first equation}\\8+y=10\qquad|\text{subtract 8 from both sides}\\\boxed{y=2}\\\\x^3-y^3=8^3-2^3=512-8=504

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Lawrence middle school is painting a circle on their playground with a radius of 7 feet what will be the total area of the circl
mars1129 [50]

Answer:

The answer will be 153.9

Step-by-step explanation:

multiply 3.14 and 7 square and that is your answer

4 0
3 years ago
The sum of the length of any two sides of a triangle is greater than the length of the third side. And the abc, bc=4 and ac= 8-a
alisha [4.7K]

Answer:

ab<6 units

Step-by-step explanation:

One of the basic property of any triangle is that the sum of the length of any two sides of a triangle is always greater than the length of the third side.

Here we are given a triangle abc, in whicn bc=4

ac= 8-ab

If have to make some conclusion about ab.

As per the property discussed above

ab<ac+bc

ab<8-ab+4

2ab<12

ab<6

Hence the length of ab must be less than 6 units

5 0
3 years ago
Help pleaseee due tonight :(
Serggg [28]

Answer:

x=3

Step-by-step explanation:

substitute into the equation

5 0
3 years ago
Read 2 more answers
(Multiple choice)
spayn [35]
I believe the answer is A
5 0
3 years ago
A rope is 250 centimeters long. You need the rope to be 1 1/2 meters long. How many centimeters should you cut off?
Drupady [299]
If you would like to know how many centimeters should you cut off, you can calculate this using the following steps:

1 1/2 meters = 3/2 meters = 1.5 meters = 150 centimeters

250 centimeters - 1 1/2 meters = 250 centimeters - 150 centimeters = 100 centimeters = 1 meter

The correct result would be 100 centimeters. 
6 0
3 years ago
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