:) Brainliest pls??
Answer:
The positive solution is 6.
Step-by-step explanation:
x^2 - 6 = 5x (Subtract 5x from both sides)
x^2 -5x - 6 = 0 (We can factor this, so there is no need to use the quadratic formula)
(x - 6)(x + 1) = 0
If the product of the two terms is zero then either one being equal to zero will cause the whole expression to be zero.
The solutions are:
x - 6 = 0 (Add 6 to both sides)
x = 6
x + 1 = 0 (Subtract 1 from both sides)
x = -1
The positive solution is 6.
Answer:20.8 is the correct answer
Step-by-step explanation:asked Siri
Answer:
x=-3
Step-by-step explanation:
Answer:
The answer would be B one solution
Hope this helps
<span><em>12 pennies, 3 nickles, and 2 dimes</em>
p = number of pennies
n = number of nickles
d = number of dimes
p(1) + n(5) + d(10) = 47
that is, the number of pennies x 1 cent + number nickles x 5 cents
+ number of dimes x ten cents equals 47 cents
p = 4n
p + n + d = 17
Substituting 4n for p in the above
4n + n + d = 17
5n + d = 17
Subtract 5n from each side
d = 17 - 5n
We will now substitute 4n for p and ( 17-5n ) for d in
the equation
p(1) + n(5) + d(10) = 47
4n(1) +n(5) + (17-5n)(10) = 47
9n + 170 - 50n = 47
-41n + 170 = 47
Subtract 170 from each side
-41n = 47 - 170
-41n = -123
Divide each side by -41
n = 3
Since p = 4n
p = 4(3)
p = 12
Since p + n + d = 17
12 + 3 + d = 17
15 + d = 17
d = 2
So we have 12 pennies, 3 nickles and 2 dimes
12 + 3(5) + 2(10) ?= 47
12 + 15 + 20 ?= 47</span>
