12+4+9+13+7+11+5+2+_+_ /10= 8
x10 both sides
12+4+9+13+7+11+5+2+_+_=80
63+_+_=80
-63 both sides
_+_= 17
any two numbers that add up to 17 can go in the planks
7,10
Answer:
True
x = 4.32 (2 dp)
Step-by-step explanation:
x³ - 5x = 59
x³ - 5x - 59 = 0
x = 4
4³ - 5(4) - 59 = -15
x = 5
5³ - 5(5) - 59 = +41
A change in sign indicates the existence of root between 4 and 5
Use iterative process to identify the root
x³ - 5x - 59 = 0
x³ = 5x + 59
x = (5x + 59)^⅓
Start at any x between 4 and 5
x(n+1) = (5x(n) + 59)^⅓
x0 = 4.8
x1 = 4.362070671
x2 = 4.323369309
x3 = 4.319915667
x4 = 4.319607202
x5 = 4.318579649
Clearly x is 4.32 (2 dp)
Hey there!
4x - 9 = 15
ADD 9 to BOTH SIDES
4x - 9 + 9 = 15 + 9
CANCEL out: -9 + 9 because it gives you 0
KEEP: 15 + 9 because it help solve for the x-value.
NEW EQUATION: 4x = 15 + 9
SIMPLIFY IT!
4x = 24
DIVIDE 4 to BOTH SIDES
4x/4 = 24/4
CANCEL out: 4/4 because it gives you 1
KEEP: 24/4 because it gives you the answer of the x-value
NEW EQUATION: x = 24/4
SIMPLIFY IT!
x = 6
Therefore, your answer is: x = 6 (Option D.)
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
6 × 3 = 18
10 × 3 = 10
there for you would need 30 liters of cola for 18 guests
18:30
-2y - 2y - 8 = -4
Move the -8 to the -4, and that makes
-2y -2y = 4
Add the -2ys together and that makes
-4y = 4
Then divide by -4, and you will get your answer of
y= -1