Answer: 18
Step-by-step explanation:
when there is a in front of an expression in parentheses change the sign of each term in the expression. 9+9=18 so ANSWER 18
Answer:
d. 560
Step-by-step explanation:
We have to find the value of
.
Now, we know the formula of
is given as
.
Here, n! = 1 × 2 × 3 × 4 × .......... × (n - 1) × n.
So, in our case, 
= 
= 
= 56 × 10
= 560 (Answer)
Answer:
expression: t³
Step-by-step explanation:
a number that can be presented by: t, is cubed which means it's raised to the power of 3.
We have that
4x-5y=20
3x+y=-4
using a graph tool
see the attached figure
the solution is the point (0 , -4)
the answer isx=0y=-4
Answer: The correct factors are
(x-1) and (x+2)
Step-by-step explanation:
Step one :
To factorize the equation
x²– x – 2=0
First we look for numbers that when multiplied will result to the constant term and when added will result to the second term (1x, - 2x)
Step two :
We replace the second term with these factors we have
x²–(x-2x)–2=0
x²–x+2x–2=0
Factoring the expression we have
x(x–1)+2(x–1)=0
Hence the factors will be
(x-1) and (x+2)