4 years ago

Solve each system by graphing. Check your solution. y=1/2x+7 y=3/2x+3

1 answer:

3 0

Both linear graphs,
first one x=0, y= 7. so it crosses the y axis at 7 and goes up and to the right at 1 up and 2 over.
second x=0, y=3, so it crosses the y axis at 3 and goes up at a steeper angle of 3 up and 2 to the right.

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In 2011, the Wellington Police Department issued 450 speeding tickets. In 2012, that number fell to 414. Find the percent decrea

valkas [14]

414 is 92% of 450

Therfore, when you subtract 100 - 92

It equals 8

8% is the answer.

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3 years ago

6. Determine the measures of the unknown angles in the figure. 73° 2° 26 75°

olasank [31]

Answer is 32,122,58

Step by step explanation

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3 years ago

26x-4=100 I need the answer to this please

arsen [322]

X=4

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4 years ago

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In one town, 39% of all voters are Democrats. If two voters are randomly selected for a survey, find the probability that they a

alekssr [168]

So you would do .39 times .39
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3 years ago

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PLEASE HELP!!!!! What is the value of x in the matrix equation below?

Brums [2.3K]

The given matrix equation is,

$1.5\left[\begin{array}{cc}x&6\\8&4\end{array}\right] +y\left[\begin{array}{cc}1&4\\3&2\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]$ .

Multiplying the matrices with the scalars, the given equation becomes,

$\left[\begin{array}{cc}1.5x&9\\12&6\end{array}\right] +\left[\begin{array}{cc}y&4y\\3y&2y\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right] \\$

Adding the matrices,

$\left[\begin{array}{cc}1.5x+y&9+4y\\12+3y&6+2y\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right] \\$

Matrix equality gives,

$1.5x+y=z\\ 9+4y=z\\ 12+3y=6z\\ 6+2y=2$

Solving the equations together,

$y=-2\\ 3y-1.5x=9\\ -1.5x=9+6\\ x=-10$

We can see that the equations are not consistent.

There is no solution.

3 0

3 years ago