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2 years ago

For questions 18-20, decide whether each transformation will result in congruent or similar figures.

Mathematics

1 answer:

nlexa [21]2 years ago

4 0

18. The shape is only shifted to a different location and orientation but remains the same size so this is congruent.

19 and 20 are both scaled to a different size so they are both similar.

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FREE BRAINLY PLZ HELP 50 PTS!! Simplify -5(20 + 3) -115 -103 85 -97

ra1l [238]

Answer:

$- 5(2 0 + 3) = - 50 \times 20 + - 5 \times 3 \\ = - 100 - 15 \\ = - 115 \\ thank \: you$

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2 years ago

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Which measurement is greater:640 ft or 0.5 mi

hammer [34]

Answer:

0.5 mi (2640 feet)

Step-by-step explanation:

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2 years ago

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Which statement is true?

alexgriva [62]

The Correct answer is C. -14 + (-10) = -24 and 2 + (-28) = -26. When negative numbers are in play, the lower negative number is higher in value. So when solved -24 > -26

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3 years ago

Evaluate the cosine if the angle of rotation which contains the point (9, -3) on its terminal side

Liono4ka [1.6K]

so we know the terminal point is at (9, -3), now, let's notice that's the IV Quadrant

$\bf (\stackrel{x}{9}~~,~~\stackrel{y}{-3})\impliedby \textit{let's find the \underline{hypotenuse}} \\\\\\ \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies c=\sqrt{a^2+b^2} \qquad \begin{cases} c=hypotenuse\\ a=adjacent\\ b=opposite\\ \end{cases} \\\\\\ c=\sqrt{9^2+(-3)^2}\implies c=\sqrt{81+9}\implies c=\sqrt{90} \\\\[-0.35em] ~\dotfill$

$\bf cos(\theta )=\cfrac{\stackrel{adjacent}{9}}{\stackrel{hypotenuse}{\sqrt{90}}}\implies \stackrel{\textit{rationalizing the denominator}}{\cfrac{9}{\sqrt{90}}\cdot \cfrac{\sqrt{90}}{\sqrt{90}}\implies \cfrac{9\sqrt{90}}{90}}\implies \cfrac{\sqrt{90}}{10}\implies \cfrac{3\sqrt{10}}{10}$

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2 years ago

X^2 + bx + 49 is a perfect squad trinomial what is one possible value of b?

ddd [48]

a perfect square trinomial, (x + y)² = x² + 2xy + y²

so, if we have the x of the bx, what is left is the b

the expression would have to be (x + 7)², since we have the 49 and the x²

so, what's left: x² + 14x + 49,

b = 14

hope it helps :)

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2 years ago

For questions 18-20, decide whether each transformation will result in congruent or similar figures.​

For questions 18-20, decide whether each transformation will result in congruent or similar figures.