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never [62]
3 years ago
8

Suppose two sides of a square are given as x + 3 and 12 - x. What is its area?

Mathematics
2 answers:
AysviL [449]3 years ago
8 0
The area is 15. Since squares have equal side lengths, you just have to find the value of x so that the answer is the same. x=4.5    
4.5 + 3 = 12 - 4.5 = 7.5     Then all you have to do is multiply it by 2. That will give you 15. I hope you understand.
Karolina [17]3 years ago
5 0
Then you'd do this:

(x + 3)(12 - x)
= 12x - x^2 + 12x - 3x
= 21x - x^2

Hope it helped :)
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What is the volume of a sphere that has a 64 m radius
Molodets [167]

Answer:

V=349525.333*pi

Step-by-step explanation:

Volume of a sphere: V=(4/3)*pi*r^3 where r=radius.

r=64

V=(4/3)*pi*(64)^3=(4/3)(262144)pi=349525.333*pi

8 0
3 years ago
7) 4b2 + 8b + 7 = 4<br> What the answer
Anit [1.1K]

4b² + 8b + 3 = 0

4b² + 2b + 6b + 3 = 0

2b(2b + 1) + 3(2b + 1) = 0

(2b + 3)(2b + 1) = 0

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8 0
3 years ago
Read 2 more answers
By selling a stool for rupees 67.50,a carpenter loses 10%.how much percent would he gain or lose by selling it for rupees 82.50.
valentina_108 [34]
Let the actual value of the stool be x.

So if the carpenter sells the stool x rupees he neither loses, now wins anything.

67.50 is the value x - 10% of x, that is:

67.50=x-0.1x
67.50=0.9x

x=67.50/0.9=75      (rupees) is the actual value of the stool.


Selling the stool for 82.50 rupees, the carpenter clearly would make a profit, say of y% of that actual value, that is y%*75.

So using the same method:

82.50=75+y%*75

y%*75=82.50-75=7.5

we can make the calculations, but clearly 7.5 is 10% of 75


Answer: 10% gain.


8 0
3 years ago
mai has 36$ to spend on movie tickets each movie ticket cost 4.50$ how many ticket can she buy multiplication problem
-Dominant- [34]

Answer:

8

Step-by-step explanation:

Mai has $36 and each movie ticket is $4.50.

You wanna divide 36 by 4.50 to find out how much tickets she can purchase which is 8.

6 0
3 years ago
What is (3.14)(87.5)²=____?
Radda [10]

Answer:

24040.625

Hope this helped! I'm not good at explaining the steps, but this is the answer.

5 0
3 years ago
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