5k^2–7k-4 it says I have to write 20 characters so here
Answer:
100+629
Step-by-step explanation:
108 + 621
-8 +8
100 + 629
For any value of x the value of the expression (x–3)(x+7)–(x+5)(x–1) is equal to –16.
Step-by-step explanation:
In order to prove the statement we can take any value of x and then solve the expression to see if it equal to -16 or not.
So,
Taking x = 2
Taking x = 5
Taking x= 10
Hence,
For any value of x the value of the expression (x–3)(x+7)–(x+5)(x–1) is equal to –16.
Keywords: Polynomials, expressions
Learn more about polynomials at:
#LearnwithBrainly
Answer:
30 min
Step-by-step explanation:
She takes 45 minutes to run 6 miles.
Lets simplify this. If we divide by 3, then we know that:
She takes 15 minutes to run 2 miles.
Therefore, to find the amount of time it takes to run 4 miles, we just multiply 15 by 2.
Therefore it takes her 30 mins to run 4 miles.
Answer:
A. Infinitely many
Step-by-step explanation:
9x + 27 = 9(x + 2) + 9
Distribute on the right side.
9x + 27 = 9x + 18 + 9
Combine like terms on the right side.
9x + 27 = 9x + 27
Subtract 27 from both sides.
9x = 9x
Divide both sides by 9.
x = x
x = x is a true statement for every value of x. Therefore, any value you substitute in for x will make the original equation true. That means there is a infinite number of solutions.
Answer: A. Infinitely many
