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spayn [35]
2 years ago
13

Lesson Posttes

Mathematics
1 answer:
joja [24]2 years ago
7 0

A translation 2 units to the left followed by dilation by 1/2.

The correct option is (B).

<h3>What is congruency?</h3>

It states that that two triangles are said to be congruent if they are copies of each other and when superposed, they cover each other exactly.

The complete question is:

Which of the following composition of transformations would create an

image that is not congruent to its original image?

A rotation of 45° followed by a reflection across the x-axis

A translation 2 units to the left followed by dilation by 1/2

A reflection across the y-axis followed by a rotation of 60°

A rotation of 135º followed by a translation of 4 units to the right.

After a translation of 2 units to the left followed by dilation by 1/2 the image will not be congruent to its original image.

All other options are reflection and rotation, which not fit into the situation.

Learn more about congruency here:

brainly.com/question/7888063

#SPJ1

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Three times the perimeter of a triangle is the same as 75 decreased by twice the perimeter. What is the perimeter of the triangl
kupik [55]
Solution
let p be the perimeter of the triangle then
3p=75-2p   collect the like terms
3p+2p=75
5p=75  divide both side by 5
5p/5=75/5⇒p=15.
therefore the perimeter of triangle is 15 units  
6 0
4 years ago
1. The school office is now selling neon mechanical pencils. If the office pays $10.80 for a dozen pencils, how much should be c
IRINA_888 [86]

Answer:

1. Each pencil cost .90 cents each. So if they want to make a profit of 75 cents each they will get $9 for a dozen pencils. They must charge 75 cents.

2.  Several means 4 but in this case, it means 36. When you divide 252 by 7 you get 36. Because each case is $7 and the total is 252.

3. The percent markup for each jersey was around 65%. They almost doubled the price by 6.50. They would make $3543.75 if they sold all the jerseys at the homecoming game.

4. The truck took 12 hours to reach its destination.

5. She would be repaying $ 1,152.00 in one year.

I hope this helps. I did not do 6 and 7 because I hope these help you figure those out. : )

3 0
3 years ago
Here are two circles. Their centers are A and F. What is the same about the two circles?
Varvara68 [4.7K]

Answer:

The diameter of both is 8.

Step-by-step explanation:

The ratio is 4 of the first circle. And d=2r. So the diameter is 8.

8 0
3 years ago
write the equation of the ellipse using the given information: the ellipse has foci (0,3) and (0,-3) and major vertices (0,5) an
svetlana [45]

Answer: (x^2)/16 + (y^2)/25 = 1

Step-by-step explanation:

According to the problem we can figure out that the center of the ellipse is (0,0).

Since the foci is (0,3) and (0,-3) we know that the value of c is 3. The major vertices are (0,5) and (0,-5) so the value of a is 5.

If we put this into the equation a^2=b^2 + c^2, we get 25=9+ b^2

We get b^2 is 16

Now since we know that the ellipse is vertical because the x value didn’t change, we know that the b^2 value comes first in the equation. Then the a^2 value which is 25.

5 0
2 years ago
Simplify the expression (x^19 times y^21) divided by (x^2 times y^6)^2
Lyrx [107]

Answer:

x^{15}.y^{9}

Step-by-step explanation:

\frac{x^{19} . y^{21}}{(x^2. y^6)^2} \\\\Here\,\, exponent\,\, rules\,\, will\,\, be\,\, used.\\First\,\, multiply\,\, power\,\, of \,\,2\,\, with\,\, denominator \,\,exponents\\\\\frac{x^{19} . y^{21}}{x^4. y^{12}}\\If \,\, same\,\, bases\,\, are\,\, divided\,\, then\,\, their\,\, exponents\,\, are \,\,subtracted\,\,\\\\x^{19-4}.y^{21-12}\\\\x^{15}.y^{9}

3 0
3 years ago
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