Answer:
the first one is 37
the second one is 36
the third one is 27
Step-by-step explanation:
Answer:
h=12 A=144 sq. cm.
Step-by-step explanation:
pythagoream therom:
9^2+h^2=15^2
81+h^2=225
h^2=225-81
h^2=144
Sq. rt h^2=sq. rt 144
h=12cm
1/2(b1+b2)h
1/2(5+19)12
1/2(24)12
1/2(288)
a=144
It's 15 because
3 groups and 5 people in each group
and becomes 15
I HOPE THIS HELPS
It is impossible to solve for 2 unknown variables in an equation. In order to solve this, you must think mentally.
What two numbers can you add to make 22?
A good example is 15 and 8.
Can 15 and 8 be divided into smaller numbers?
Yes.
15/3 = 5
8/2 = 4
^
Notice how I'm dividing by the coefficient? *3*c and *2*f
So C can be 5 and F can be 4.
3(5) + 2(4) = 22
15 + 8 = 22
22 = 22
![\bf 10\cdot [2+(24-8)]\div 4\implies \stackrel{\mathbb{PEMDAS}}{10\cdot [2+(16)]\div 4}\implies 10\cdot [18]\div 4 \\\\\\ 180\div 4\implies 45](https://tex.z-dn.net/?f=%5Cbf%2010%5Ccdot%20%5B2%2B%2824-8%29%5D%5Cdiv%204%5Cimplies%20%5Cstackrel%7B%5Cmathbb%7BPEMDAS%7D%7D%7B10%5Ccdot%20%5B2%2B%2816%29%5D%5Cdiv%204%7D%5Cimplies%2010%5Ccdot%20%5B18%5D%5Cdiv%204%0A%5C%5C%5C%5C%5C%5C%0A180%5Cdiv%204%5Cimplies%2045)
recall, peMDas, Multiplication and Division, from left-to-right.
