Answer:
-31
Step-by-step explanation:
We need to use BODMAS to figure out the answer to this extremely difficult question:
So first we need to multiply:
-7 × 6 = -42
Then we need to add:
2 + 4 + 5 = 11
Now we need to subtract:
11 - 42 = -31
33.3 because 27/50=36/x and x=66.67 and thats how much as decayed after 36 hours but you want what is left so subtract from 100 and get 33.3
Answer:
Step 1: Transpose everything to one side
12. x²+16x+15-10x+4=0
Step 2: Add the like terms
x² + (16x - 10x) + 15 + 4=0
x² + 6x + 19=0
Step 3: Use the quadratic formula to get the value(s) of x.
a=1 b=6 c=19

therefore, x=... or x
Answer:C
Step-by-step explanation:
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Total area = 12 + 18 = 30cm²