4) 62.8 cm^2
5) It is quadrupled
Answer:
a = -15.5, b = -32.5
Step-by-step explanation:
Let's say the first number is a, and the second is b.
a + b = - 48
a - b = 17
If you add both equations, you get 2a = -31, because the
+b and -b cancel each other.
So you would get a + a = 2a, then -48 + 17 = -31
2a = -31
--- ---
2 2
Divide both sides by 2 to get a by itself.
a = -15.5
Then let's go to the next equation (a - b = 17)
Plug in a..
-15.5 - b = 17
+ 15.5 + 15.5
------
-b = 32.5
--- ------
-1 -1
b = -32.5
Hope this helps.
Answer:
First one is first option
Second one is the third option
Step-by-step explanation:
The first one is arithmetic sequence as each term decreases by same amount
(1/3) as x = 1,2,3,4...
Answer:
C
Step-by-step explanation:
They are similar triangles as all 3 angles are same
