Answer:
The solution of system of equation is (-4,-2)
Step-by-step explanation:
The given system of linear equation is
Equation 1: 2x+y=(-10)
Equation 2: 3x+4y=(-20)
Using the Elimination method:
Important step: First multiply equation 1 by 4
we get,
Equation 3: 4(2x+y)=(-40)
Equation 3: 8x+4y=(-40)
Now,
8x+4y=-40 Equation 3
3x+4y=-20 Equation 2
- - +
________
5x+0=(-40)+20
5x=(-20)
x=(-4)
Replacing value of x i any equation
2x+y=(-10)
2(-4)+y=(-10)
(-8)+y=(-10)
y=(-2)
Thus,
The solution of system of equation is (-4,-2)
Answer:
2
Step-by-step explanation:
The frequency is how many times the score shows up in the data set
21,<u> 27</u>, 20, 29, 23, 21, 21, <u>27</u>, 26, 25
27 shows up 2 times so the frequency is 2
The formula for finding the area of a rug:
Plugging in the values we know, we can solve for s.
Take the square root of both sides.
is approximately equal to 8.89
So, 8.89 feet is the answer.
Answer:
d=4
Step-by-step explanation:
(12d - 24) - (2 • (d - 3) + 22) = 0
10d - 40 = 10 • (d - 4)
10 • (d - 4) = 0
Solve : 10 = 0
Solve : d-4 = 0
Add 4 to both sides of the equation :d = 4