Answer:
First, assign a value to x.<em> x</em> will be 2 in this case.
Next, multiply x by itself, because that is what exponent 2, or squared, means. 2 x 2 = 4
Now, multiply 4 by 7. 4 x 7 = 28
Next, find the value of <em>9x</em>.
The value of 9x will be 9 times a number, x, also known as 2 in this scenario. 9 x 2 = 18
Then, subtract 28 from 18. 28 - 18 = 10
Lastly, subtract 10. 10 - 10 = 0
Therefore,
The answer is 0. <em>Product may vary depending on value assigned to x.</em>
Answer:
34
Step-by-step explanation:
2b + 7z when b = 3, z = 4
2*3 = 6
7*4 = 28
28 + 6 = 34
Hope this helps!
Answer:
Negative five is in fact a rational number.
Step-by-step explanation:
Rational numbers can either be negative or positive. An irrational number would be pi (3.14159 etc.)
29 out of 40 as a percentage is simply 29 divided by 40 (29/40): 0.725 = 72.5%
126 out of 200 as a percentage is the same process = 63%
Hope this helps!! :)