Answer:
x² - 10x + 21 = 0
Explanation:
The standard form of the quadratic equation is:
ax² + bx + c = 0
This means that we want to have all terms on one side and a zero on the other.
This can be done as follows:
x² - 10x + 16 = -5
Add 5 to both sides of the equation:
x² - 10x + 16 + 5 = -5 + 5
x² - 10x + 16 + 5 = 0
Combine like terms to get the final expression in standard form as follows:
x² - 10x + 21 = 0
Hope this helps :)
Answer: he gave up so he wasn’t able to do it
Step-by-step explanation:
Parent function: y=2^x
Transformations:
Reflection over x-axis
Vertical stretch of 3
Right 1
Up7
Answer:
The number of
Quarters = q = 58 quarters
Nickels = n = 32 nickels
Step-by-step explanation:
It is important to note that:
A quarter is worth 25 cents = 0.25q
A nickel is worth 5 cents = 0.05n
George has only Quarters and nickels in his piggy bank.
Let the number of
Quarters = q
Nickels = n
He has a total of 90 coins.
Hence,
q + n = 90.... Equation 1
q = 90 - n
The value of the coins is $16.10.
Hence,
0.25q + 0.05n = 16.10....Equation 2
We substitute 90 - n for q in Equation 2
0.25(90 - n) + 0.05n = 16.10
22.5 - 0.25n + 0.05n = 16.10
Collect like terms
- 0.25n + 0.05n = 16.10 - 22.5
-0.2n = - 6.4
n = -6.4/-0.2
n = 32 nickels
Solving for q
q = 90 - n
q = 90 - 32
q = 58 quarters
Therefore, the number of
Quarters = q = 58 quarters
Nickels = n = 32 nickels