1 ) Billy walks 15 miles every day to soccer practice and he had 5 practices last week.
We know that, 1 mile = 1760 yards
So, 15 miles = (15× 1760) yards = 26400 yards
Thus the total distance walked in 5 practices will be: 
2) Mark's current age is 
years
So, his age was in 10 years ago 
Given that, his current age is 3 times his age 10 years ago.
So, the equation to represent this situation will be : 
Answer:
x = -5
Step-by-step explanation:
Step 1: Write equation
-2x + 8 = 18
Step 2: Solve for <em>x</em>
- Subtract 8 on both sides: -2x = 10
- Divide both sides by -2: x = -5
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
-2(-5) + 8 = 18
10 + 8 = 18
18 = 18
Answer:
3x°
Step-by-step explanation:
when a triangle is isosceles, the angles at its base are equal.
Answer:
see below
Step-by-step explanation:
1). 8 radii are shown, there are 8 straight lines going from the center of the circle to the edge of the circle
2) diameter = d, radius = r. given radius r ,
d = 2r
d = 2(14.5) = 29
the diameter is 29 cm
3)using d = 2r
7x+5 = 2(13) = 26
7x = 21
x = 3
4)the length of the diameter is increased 3 times
d1 = 2r,
d2 = 2(3r) = 6r
we see that the diameter whose radius is 3 times longer is 3 times larger than the diameter whose radius is 1 times as long.
5) they can find the diameter of the circular path, then find the radius, go from one point on the circular path and go r distance
