Yes.
473 + 161/4 = 634/4 = 158.5
Short answer: C
Remark
Since b is all by itself in equation 2, Substitute it into equation 1.
2a + 3b = 5
b = a - 5 Put this result in equation 1. Be sure and use brackets.
2a + 3(a - 5) = 5 Remove the brackets.
2a + 3a - 15 = 5 Notice the -5 inside the brackets becomes - 15
Combine like terms on the left.
5a - 15 = 5 Add 15 to both sides
5a = 5 + 15
5a = 20 Divide by 5
a = 20/5
a = 4
So far, c is the only possible answer.
b = a - 5
b = 4 - 5
b = - 1
Answer:
1. 46
2. 46
3. 134
4. 134
5. 46
6. 46
7. 134
This is going from top right, left to right.
Answer:
Step-by-step explanation:
<u>Given system</u>
<u>Solve by elimination, subtract the equations and solve for y:</u>
- 18x + 6y - 18x - 22y = 30 - 14
- -16y = 16
- y = -1
<u>Find x by substituting y:</u>
- 18x + 6(-1) = 30
- 18x - 6 = 30
- 18x = 36
- x = 36/18
- x = 2
<u>The answer is</u>: (2, -1)
<span>Its speed is 18.05 m/s</span>