Answer:
8.75!
Step-by-step explanation:
the answer is x-2.5=6.25
6.25+2.50=8.75
Answer:
12
Step-by-step explanation:
Parenthesis first:
5-4+1
5-4=1+1=2
18÷3×2
Divide:
18÷3×2
Multiply:
6×2=12
<h3>
Answer: Q = 8</h3>
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Explanation:
The left hand side of the first equation is x-3y
The left hand side of the second equation is 2x-6y = 2(x-3y). Note how it's simply double of the first expression x-3y
If we multiply both sides of the first equation by 2, we get
x-3y = 4
2(x-3y) = 2*4
2x-6y = 8
Meaning that 2x-6y = 8 is equivalent to x-3y = 4. Both produce the same line leading to infinitely many solutions. Each solution will lay along the line x-3y = 4.
We can say each solution is in the set {(x,y): x-3y = 4}
Which is the same as saying each solution is of the form (3y+4,y)
If
is a factor of a polynomial
then,
is its root.
So
is a root of 

Answer:
$10.01
where x = 4.1/10 x=14.11
Step-by-step explanation:
-7x^2 + 32x + 240
-7x^2 +32x
-49x+32 +240
240/17x = 17/240
240/49x = 4 9/10
x = 14.11 - 4. 10 9/10
x = -4.01
rounded to 2dp
x = 14.11
x = -4.01
Tacos should be priced at $10.01