Answer:
-18 is the right answer..
Answer:
4.2 Solving x2-10x+25 = 0 by Completing The Square . This quadratic equation has one solution only. That's because adding zero is the same as subtracting zero.
Step-by-step explanation:
Answer:
Slope = -1
Step-by-step explanation:
m = y^2 - y^1 / x2 - x1
let (x1, y1) = (-3,4) & (x2, y2) = (2,-1)
m = -1-4 / 2-(-3) = -5/5 = -1
Answer:
C. 3x^4 + 16x^3 + 3x^2 - 66x - 56
Step-by-step explanation:
Answer:
28
Step-by-step explanation:
Number of coins in the bag ⇒ 84
Give that,
Dimes : Nickels : Pennies
3 : 2 : 1
You can see that, there are 6 parts . ( 3 + 2 + 1 = 6 )
And now let us write the types of coins in fractions.
Dimes ⇒ 
Nickels ⇒ 
Pennies ⇒ 
And now they're asking for the number of nickels.
To find that, you can multiply 84 ( number of coins) by it's fraction ( 2/6).
Let us solve.
84 × 


28
Therfore, there are 28 nickels.