The answer is
8(8.8 x 10^12) = <span>70.4 x 10^12
the answer is </span><span>A. 70.4 x 10^12</span>
These statements are true:
<span>1. The first number in an ordered pair is the x-coordinate.
2. The second number in an ordered pair is the y-coordinate.
3. The graph of a linear equation is usually a line.
</span><span>5. Ordered pairs are graphed as points in the coordinate plane.
</span>
-1 = z/3 - 7
Emily's Work:
-1 = z/3 - 7
-1(3)=z/3(3)-7
-3 = z - 7
-3 -7 = z - 7
z = -10
Right away without having to start at the beginning, I see that she has made a mistake at the 4th-5th line of work.
Instead of adding 7 to both sides, she subtracts it and still leaves it in and doesn't fully finish the equation, as it would really be z-7 = -10
In order to solve it, follow these steps:
Rewrite the initial equation as follows:
x/3 - 7 = -1
Multiply both sides by 3
x/3(3)-7(3)=-1(3)
x - 21 = -3
Add 21 to both sides
x = 18
Given a quadratic equation in standard form
The discriminant D
tells the types of roots the equation has.
In this case, we have
Then, the discriminant of this quadratic equation will be
Finally, the value of discriminat is 49 and as he discriminant is greater than zero then this quadratic equation has 2 different real solutions.
