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Reil [10]
3 years ago
14

If two sides of a triangle are 5 and 7 inches longer than the third side and the perimeter measures 21, find the length of each

side of the triangle
Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
7 0
Hello

x
x +5 
x + 7

x + x + 5 + x + 7 = 21 
3 x = 21 - 12
3 x = 9
x = 3 

3 , 5 et 7 pouces
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4 0
3 years ago
Read 2 more answers
Solve for n.<br><br> 39 = n − –12<br><br> n =
Cloud [144]

Answer:

Two negative make a positive so this equation is basically 39 = n + 12 so you need to subtract 12 from each side. This makes it n = 27

Hope this helps!

6 0
2 years ago
Which of the following behaviors would best describe someone who is listening and paying attention? a) Leaning toward the speake
nataly862011 [7]

Answer:

D

Step-by-step explanation:

If you ask questions while their speaking it shows that you are paying attention to them. Avoiding eye contact could mean your thinking about something else or you aren't interested. Interrupting them is just being disrespectful. Leaning towards them doesn't really do anything other than you moving.

7 0
2 years ago
Factor and add steps please<br><br> 81u^6+192
attashe74 [19]
ANSWER : (9u - 8)2



STEPS:

Step-1 : Multiply the coefficient of the first term by the constant 81 • 64 = 5184

Step-2 : Find two factors of 5184 whose sum equals the coefficient of the middle term, which is -144 .

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -72 and -72
81u2 - 72u - 72u - 64

Step-4 : Add up the first 2 terms, pulling out like factors :
9u • (9u-8)

Step-5 : Add up the four terms of step 4 :
(9u-8) • (9u-8)
Which is the desired factorization



5 0
1 year ago
The diagram shows a circle of radius 1 contained in a square. If the area of the circle equals x% of the area of the square, the
11111nata11111 [884]

Answer:

Area of square  with a side of 2r  = 2(1)  = 2  = 2^2   = 4

Area of circle =  pi ( 1)^2  =  pi

x =  pi / 4   ≈  .79   =  79%

7 0
2 years ago
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