Answer:
9b + 99
Step-by-step explanation:
You have already seen what the example had done.
First multiply (factorize) 9 to both variables inside the parentheses.
9 · b = 9b
9 · 4 = 36
Now remember to not change the sign in the parentheses
9b + 36 + 63
You can now add 63 and 36 together.
63 + 36 = 99
So,
9b + 99
It is still "plus" sign because the number 99 is a positive.
Answer:
a lot
Step-by-step explanation:
1 foot= 12 inches
so divide 30 into 12 which equals 2ft and 5 inches
Answer:
<em>The vertical distance in feet that the plane traveled was 4 Km</em>
Step-by-step explanation:
<u>The Slope of a Line
</u>
Suppose we know a line passes across points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:
The airplane ascent will be modeled with the equation of a line because we are given a constant slope of m=2/3. We also know the horizontal distances are x1=1 Km and x2=7 Km. Substituting in the formula above:
Operating:
Solving for y2-y1, we get the vertical distance traveled by the plane:
Thus, the vertical distance in feet that the plane traveled was 4 Km
Answer:
50; 72; 8; 57.9
Step-by-step explanation:
1. sqrt((30/2)^2 + (20)^2) = sqrt(15^2 + 20^2) = sqrt(225 + 400) = sqrt(625) = 25 (radius) * 2 = 50 (diameter)
2. 360 (degrees in a circle)/5 (sides in a pentagon) = 72 degrees
3. 360 (degrees in a circle)/x (sides) = 45 --> 360/45 = x --> 8 sides = x
4. sqrt(7^2 + (12/2)^2) = radius --> sqrt(49 + 36) --> sqrt85 * 2pi = circumference --> 57.9281062 = circumference --> 57.9