Answer:
3800
Step-by-step explanation:
Because 2 is below 5 so can't round it so you have to change the rest to 0
Answer:
Step-by-step explanation:
<u>Circumference formula:</u>
- C = 2πr,
- where π = 3.14, r - radius
1.
- C = 18.8 in
- 2*3.14r = 18.8
- 6.28r = 18.8
- r = 18.8/6.28
- r = 2.99 ≈ 3 in
2.
- C = 22 in
- 6.28r = 22
- r = 22/6.28
- r ≈ 3.5 in
Answer: The solution to the system is (-2, 3)
Step-by-step explanation: In order to graph these equations, plug in any numbers for the value x to solve for the y value. For example, you can choose x to equal -1. Solve for this in both equations: y = -2(-1) - 1 and y = -1 + 5.
Y = -2(-1) - 1
Y = 2 - 1
Y = 1
Y = -1 + 5
Y = 4
Graphing this, you can see the values (-1, 1) for y = -2(-1) - 1 (blue) and (-1, 4) for y = -1 + 5 (red). Continue to solve for y using a variety of x values until you find where both lines cross each other.
Answer:
65
Step-by-step explanation:
They are vertical angles; so angles are congruent
*<em>Vertical angles are always congruent*</em>
<em>Congruent means equal or same.</em>
1) Since they are congruent, you form an equation.
<h2>
145 = 2x + 15</h2>
2) Solve by subtracting 15 from both sides.
<h2>
145 = 2x + 15</h2><h2>
- 15 -15</h2><h2>
----------------------</h2><h2>
130 = 2x</h2>
3) Solve by dividing 2 from both sides
<h2>
130/2 = 2x/2</h2>
4) Simplify
x = 65