I'll offer you a deal in return for your 5 points: I'll solve it . . . . You check it.
<u>-1/2x - 7 = -11</u>
Add 7 to each side: -1/2 x = -4
Multiply each side by 2 : - x = -8
Multiply each side by -1 : <em> x = 8</em>
Take it Allalala !
Answer:
Numerator = 18
Denominator =75
Step-by-step explanation:
Given the expression
9/15=x/30=45/x
We can equate any two fractions
9/15= x/30
Criss multiply
15x = 9×30
15x = 270
x = 270/15
x= 18
Numerators is 18
Similarly
9/15 = 45/x
1/15 = 5/x
x = 5×15
x = 75
The denominator is 75
Since he starts with (10x+7) dollars and is buying two pairs of jeans that each cost (4x-5) dollars you should subtract the cost of the jeans from his starting amount.
(10x+7)-2(4x-5)=
10x+7-8x+10=
2x+17
Answer: 0
Step-by-step explanation:
The disciminant \Delta tells you how many real solutions a quadratic equation has, depending on its sign:
\Delta>0\implies\text{2 solutions}\\\Delta=0\implies\text{1 solution}\\\Delta<0\implies\text{no solutions}
