Answer:
no solutions
Step-by-step explanation:
-3x + 7 = 5x + 4 - 8x
Combine like terms
-3x+7 = -3x+4
Add 3x to each side
-3x+7+3x = -3x+4+3x
7 = 4
This is not a true statement so there are no solutions
Answer: 5
Step-by-step explanation:
Hi, to answer this question we have to know that
We have to subtract when two different signs appear next to each other (-+ or +-)
We have to add when two of the same signs appear next to each other (++ or --)
So:
5+(-11)-(-11)
5-11+11
5
Feel free to ask for more if needed or if you did not understand something.
Answer:
The solution is (-5, -2).
Step-by-step explanation:
We'll use "elimination by addition and subtraction."
Multiply the second row by -2. Our system
– 7x – 10y = 45
-3x - 5y = 25
becomes:
– 7x – 10y = 45
+6x + 10 y = -50
-------------------------
-x = 5, so that x = -5.
Substituting -5 for x in the second equation results in
-3(-5) - 5y = 25, or 15 - 5y = 25. This reduces to
-5y = 10, so that y must be -2.
The solution is (-5, -2).
Answer: Fourth Choice. 66
Concept:
Here, we need to understand the idea of evaluation.
When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.
Solve:
<u>Given information</u>
n = 3
<u>Given expression</u>
6 (n² + 2)
<u>Substitute values into the expression</u>
=6 (3² + 2)
<u>Simplify exponents</u>
=6 (9 + 2)
<u>Simplify values in the parentheses</u>
=6 (11)
<u>Simplify by multiplication</u>
=
Hope this helps!! :)
Please let me know if you have any questions
Answer:
11
Step-by-step explanation:
Simplify the following:
11/2×2
11/2×2 = (11×2)/2:
(11×2)/2
(11×2)/2 = 2/2×11 = 11:
Answer: 11