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1 year ago

I don't get how to explain the rigid motions. Can somebody please help me.

Mathematics

2 answers:

Anni [7]1 year ago

7 0

Honestly im in high school and I dont even know how they work. Just copy from the person above me^^

choli [55]1 year ago

3 0

Answer:

The triangle moved from the points, (-4, 4), (-4, 1), (-1, 1), and (-4, 4) to the points (3, 3), (0, 3), (0, 1) and (3, 3) without. changing shape or size.

You could say, "The triangle rotated 180° and translated 4 x-values(?) to the right"

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Which label would NOT be appropriate for volume.

Dafna1 [17]

Answer:

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Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Which of the following is a correct interpretation of the expression 2 + 7?

mr Goodwill [35]

Answer:

(D). The number that is 7 to the right of 2 on the number line

Step-by-step explanation:

It could also be the number that is 2 to the right of 7 on the number line. When numbers are added, the distances of each to the origin are laid end-to-end from the origin to the right on the number line.

2+7 can mean that the distance 2 is added to the distance 7, or vice versa. (The commutative property of addition says order does not matter.)

6 0

2 years ago

Solve both by substitution method (algebra 2) and show work please -2x-7y=22 -7x-5y=-1

Alex17521 [72]

$\bf \begin{cases}
-2x-7y=22\\
-7x-5y=-1
\end{cases}\qquad \textit{let's solve the \underline{second one} for "x"}
\\\\\\
-7x-5y=-1\implies -7x=5y-1\implies x=\cfrac{5y-1}{-7}
\\\\\\
\boxed{x=\cfrac{1-5y}{7}}\impliedby \textit{now, let's substitute it in the \underline{first one}}
\\\\\\$

$\bf -2\left( \frac{1-5y}{7} \right)-7y=22\implies \cfrac{10y-2}{7}-7y=22
\\\\\\
\textit{now, let's multiply both sides by 7, to toss the denominator}
\\\\\\
7\left( \cfrac{10y-2}{7}-7y \right)=7(22)\implies 10y-2-49y=154
\\\\\\
-39y=156\implies y=\cfrac{154}{-39}\implies \boxed{y=-4}
\\\\\\
\textit{now, let's use that in the \underline{first one}}
\\\\\\
-2x-7(-4)=22\implies -2x+28=22\implies 6=2x\implies \cfrac{6}{2}=x
\\\\\\
\boxed{3=x}$

4 0

2 years ago

How do you decide whether substitution is the best method to solve a system in three variables?

Ivan

Select one equation and solve it for one of its variables.
In the other equation, substitute for the variable just solved.
Solve the new equation.
Substitute the value found into any equation involving both variables and solve for the other variable.

3 0

2 years ago

HELP PLEASE 25 points! y=-1/4(x+2)^2+1 vertex: axis: y-int: and then graph it

kolezko [41]

Answer:

x=-1/4

Step-by-step explanation:

this might be wrong

5 0

2 years ago