Answer:
Option D is correct.
13x = 39
Step-by-step explanation:
The system of equation is given:
....[1]
.....[2]
Multiply equation [1] by 5 to both sides we have;
.....[3]
Using elimination method:
Add [2] and [3] equations to eliminate y and solve for x, we have;

Divide both sides by 13 we get;
x = 3
Substitute x in [1] we have;
2(3)-y = -4
6-y = -4
Subtract 6 from both sides we have;
-y = -10
Divide both sides by -1 we have;
y = 10
⇒Solution: (3, 10)
Therefore, an equation can replace 3x+5y = 59 in the original system and still produce the same solution is,
13x = 39
Answer:
25%
Step-by-step explanation:
1. 4.75/19 = .25
2. .25 = 25%
Answer:
6,7
Step-by-step explanation:
Answer:
-10
Step-by-step explanation:
You want to know the rate of descent in feet per second represented by a descent of 40 feet in 4 seconds.
<h3>Rate</h3>
The rate is the amount divided by the time:
-40 ft/(4 s) = -10 ft/s
The relevant integer is -10.