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Readme [11.4K]
3 years ago
15

Find the perimeter and area of each figure below

Mathematics
1 answer:
Olin [163]3 years ago
6 0
For b it's 39 because you multiply 5 and 7 giving you 35 then add 4 Wich equals 39. I might be incorrect. check it out.
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There are 25 students that would like to go on a field trip, but only 18 may go. How many different combinations of students cou
Naya [18.7K]

480700. The different combinations of students that could go on the trip with a total of 25 student, but only 18 may go, is 480700.

The key to solve this problem is using the combination formula nC_{r}=\frac{n!}{r!(n-r)!}. This mean the number of ways to choose a sample of r elements from a set of n distinct objects where order does not matter and replacements are not allowed.

The total of students is n and the only that 18 students may go is r:

25C_{18}=\frac{25!}{18!(7!)}=480700

6 0
3 years ago
What is the value of z in the equation 2(4z – 9 – 11) = 166 – 46?
Roman55 [17]
2(4z-9-11)=166-46
8z-18-22=120
8z-40=120
Add 40 from both side
8z-40+40=120+40
8z=160
Divided 8 from both side
8z/8=160/8
z=20. Hope it help!
6 0
2 years ago
Read 2 more answers
What is the value of the expression 2 to the power of 2 + 8 to the power of 2 ÷ 2 to the power of 2?
Naily [24]
That's (4+64)/ 4. 68/4= 17
4 0
3 years ago
PLS SOLVE THIS I WILL GIVE BRAINLIEST BECAUSE THIS IS DUE IN THIRTY MINUTES. I WILL GIVE BRAINLIEST IF YOU ANSWER ALL OF THE PRO
labwork [276]
So what u do is (29272829)+(-8382929)=(-7398)-n
3 0
3 years ago
Solve by using the perfect squares method.* x2 – 12x + 36 = 0
ElenaW [278]
x^2 -12x + 36 = 0\\ \\ (x-6)^2= 0 \\ \\ x-6=0 \\ \\ x=6
4 0
3 years ago
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