Because -7i and 7i are the solutions to the quadratic equation, you can first write it in factored form (x-7i)(x+7i). The you multiply this out and get x^{2} +49.
Answer:
54 inches
Explanation:
From the question, we have that:
1 yard = 3 inches
We are to find the equivalent value of 18 yards in inches. This can be expressed as:
18 yards = x
where x is the unknown value.
Get the value of x by dividing both equations:
Cross multiply
This shows that there are 54 inches in 18 yards
We need to solve for the total amount of money that Bianca has. But we need to consider that the total amount that Roberto has is 11 times as much money as Bianca had.
Roberto's total money is $88.
We assigned "x" variable to represent the amount that Bianca has.
Such as we can right the phrase "11 times as Bianca has" into "11X".
We have the complete expression as 88 = 11X and solving for X value, we need to divide both sides by 11.
88 / 11 = 11x / 11
8 = x
The total amount that Bianca has is $8.
Answer:b
10 to 20 is 10 and 80 to 60 is -20 so it’s -20/10 which is -2
