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2 years ago

Algebra 1 ) U. Checkpoint: Systems of equations and inequalities LOW

Mathematics

1 answer:

krek1111 [17]2 years ago

7 0

Answer:algebra ok

Step-by-step explanation:

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I am extremely confused about the length of line segment AB. Could I get some help? (I have attached an image to this post)

Evgen [1.6K]

Answer:

The length of line segment AB is 9 units.

Step-by-step explanation:

To find this, you count how many squares there are between the two points. Hope I helped.

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3 years ago

The earth travels 584 million miles in one year it takes to go around the sun. If there are 365 days in one year what speed does

EleoNora [17]

Answer:

1000miles per hour

Step-by-step explanation:

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3 years ago

Mr.Brown is creating examples of systems of equations. He completes the steps to find the solution of the equation below. Based

julia-pushkina [17]

Answer:

infinitely many solutions

Step-by-step explanation:

0 = 0 ← is a true statement.

Indicates that the 2 lines are the same line, that is one lying on top of the other.

Thus the system has an infinite number of solutions

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3 years ago

Please help me with this.

OLga [1]

Swapping rows alters the sign of the determinant:

$\begin{vmatrix} x & y & z \\ -8 & 2 & -12 \\ u & v & w \end{vmatrix} = - \begin{vmatrix} x & y & z \\ u & v & w \\ -8 & 2 & -12 \end{vmatrix}$

Multiplying a single row by a scalar scales the determinant by the same amount:

$\begin{vmatrix} x & y & z \\ u & v & w \\ -8 & 2 & -12 \end{vmatrix} = -2 \begin{vmatrix} x & y & z \\ u & v & w \\ 4 & -1 & 6 \end{vmatrix}$

Then

$\begin{vmatrix} x & y & z \\ -8 & 2 & -12 \\ u & v & w \end{vmatrix} = -(-2) \begin{vmatrix} x & y & z \\ u & v & w \\ 4 & -1 & 6 \end{vmatrix} = 2\times(-6) = \boxed{-12}$

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1 year ago

Y=-2x + 1<br> What is the value of y? (-5,___)

seraphim [82]

Answer: y=−2x+1

Step-by-step explanation:

5 0

2 years ago