3 years ago

Solve these system of linear equations:

1 answer:

5 0

1.solve for y
2x+4y=12
 -2x -2x
4y=12-2x
4 4
y=3-1/2x

step2 plug in y and solve for x
2x+8y=24
2x+8(3-1/2x)= 24
2x+24-4x=24
-2x=0
-2 -2
x=0
last step plug in x and solve for y

y=3-1/2x(0)
y=3

You might be interested in

An investment declines in value by 3% each month. By what percentage does its value decline in a year ?

babunello [35]

$\bf \qquad \qquad \textit{Annual Yield Formula}
\\\\
~~~~~~~~~~~~\left(1+\frac{r}{n}\right)^{n}-1
\\\\
\begin{cases}
r=rate\to 3\%\to \frac{3}{100}\to &0.03\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{monthly, thus twelve}
\end{array}\to &12
\end{cases}
\\\\\\
\left(1+\frac{0.03}{12}\right)^{12}-1\implies 1.0025^{12}-1~~\approx ~~ 0.03041596
\\\\\\
r\%=0.03041596\cdot 100\implies r\approx\stackrel{\%}{3.04}$

6 0

2 years ago

Perpendicular lines intersect to form right angles. What is true about the statement? Check all that apply. The hypothesis is “i

love history [14]

Answer:

1. The Hypothesis is "If lines are perpendicular" 2. This Is a Compound Statement 3. This is a Conditional Statement

Step-by-step explanation:

I just did this and It showed me the answers

6 0

2 years ago

Choose the more precise measurement. 37 T 56 lb

Gnesinka [82]

Answer:

56lb

Step-by-step explanation:

there are 2000lbs in a ton so a measurement in pounds is more precise

5 0

2 years ago

What times what eqals 40

uranmaximum [27]

5x8=40 or 40x1=40 this will works

7 0

2 years ago

Read 2 more answers

In which quadrant is ( 5,4 ) is located this is hw and i wanna get a good grade plz helpp!!!!

Andre45 [30]

(5,4)

On a system of 2 perpendicular axis with O as origine, the pair (5,4) means:

5 is the distance from the origin O and situated on x-axis (on the right of O)
4 is the distance from the origin O and situated on y-axis (above O)

Then the pair (5,4) is situated in the 1st Quadrant

8 0

2 years ago