If you are solving for b:
-2.6b+4=0.9b-17 <subtract 4 from both sides
-4 -4
-2.6b =0.9b-21 <subtract 0.9b from both sides
-0.9b -0.9b
-3.5b = -21 <divide by -3.5
--------- ------
-3.5 -3.5
b=6
One of the other angles is 72. Vertically opposite angles are equal.
Two angles that are side by side on this arrangement are supplementary.
That means they are to 180
x + 72 = 180
x = 180 - 72
x = 108
Answer
the for angles are
72 + 72 + 108 + 108
The square root of 45 is irrational. Why? Well, see below for an explanation!
A rational number includes any number that can be expressed as a whole integer; a fraction, a simple full number, and any form of a full number that isn’t a portion of a number. Because the square root of 45 is equal to more than 6 but less than 7, it is represented by a decimal. That decimal that represents it is 6 whole + a portion of another whole, meaning that the square root is not a perfect square. Imperfect squares, or numbers that can be divided to get only one number (such as 36 = 6 x 6), are irrational. Because 45 cannot be divided by a number to get that same quotient of the number being divided by, it is irrational. If you need any help, let me know and I will gladly assist you.
The grade of a road is the slope of a road. In the U.S., grade is often expressed as a percent by finding the product 100(slope). Approximate the grade of a road that has a rise of 950 ft over 3 mi is :
A. 3%
Each time it is being subtracted by 6.5