HELP!! Not hard, just confusing.. ΔABC is reflected across the x-axis and then translated 4 units up to create ΔA′B′C′. What are the coordinates of the vertices of ΔA′B′C′ ?

Answers

Answer 1
Answer: The coordinates of the vertices of ΔABC are:A( x1, y1), B( x2, y2) and C( x3, y 3 ). After it is reflected across the x-axis, coordinates are ( x1, -y1), (x2, -y2), (x3, -y3). Finally, the coordinates of the vertices of ΔA´B´C´ after translation are: A´( x1, 4-y1), B´( x2, 4- y2), C´( x3, 4-y3 ) 

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For which system of equations is (2, 2) a solution? A.–3x + 3y = 0x + 6y = 10B.–2x + 5y = –64x – 2y = 4C.5x – 2y = –63x – 4y = 2D.2x + 3y = 104x + 5y = 18

Polygon ABCD will be dilated by a factor of 2 to produce polygon A′B′C′D′. The origin is the center of dilation. Which point will not represent a vertex on polygon A′B′C′D′ ?

Answers

Find the attachment for the dilation..If the center of dilation is the origin.Then A' is not the vertex

Jenny rented a bike from Danielle's Bikes.It cost $13 plus $3 per hour. If Jenny paid
$34, then she rented the bike for how
many hours?

Answers

The answer is 7 cuz 34-13=21/3=7

Answer:

7 hours

Step-by-step explanation:

34 minus 13, the original price to buy the bike. That equals 21, 21 divided by 3, equals 7, because every hour, 3 dollars is spent.

HELP ASAP PLEASE!!the heights of two different projectiles after they launched are modeled by f(x) and g(x).

Answers

Answer:

Step-by-step explanation:

According to the table, function g(x) reaches the max height of 33, approx.

The equation of motion is f(x) = -16x^2 + 42x + 12.  We need to determine the maximum of this function.  To do this, find the x-coordinate of the vertex, which is x = -b/(2a), or x = -42/(2*-16), or 1.31 sec.

Evaluating f(x) = -16x^2 + 42x + 12 at x = 1.31 sec, we get f(1.31) = 39.6.

So it appears that f(x) has a higher max than does g(x); the difference is approx. 39.6 - 33, or 6.6

11.Can 90 degree, 90degree and 20 degree form a triangle? *1 pointyesnosometimesnone of these​

Answers

Final answer:

Angles of a triangle always add up to 180 degrees. The given angles (90, 90, 20 degrees) give a total of 200 degrees, hence they cannot form a triangle.

Explanation:

In order for three angles to form a triangle, they must satisfy the triangle inequality theorem, which states that the sum of the measures of any two angles in a triangle must be greater than the measure of the third angle.

In this case, you have angles measuring 90 degrees, 90 degrees, and 20 degrees. Let's apply the theorem:

1. Angle 1: 90 degrees

2. Angle 2: 90 degrees

3. Angle 3: 20 degrees

Now, let's check if these angles satisfy the triangle inequality theorem:

- Angle 1 + Angle 2 = 90 degrees + 90 degrees = 180 degrees

- Angle 3 = 20 degrees

According to the theorem, the sum of any two angles must be greater than the measure of the third angle. However, in this case, the sum of Angle 1 and Angle 2 (180 degrees) is not greater than Angle 3 (20 degrees). Therefore, these angles do not satisfy the triangle inequality theorem.

So, the answer is "no," 90 degrees, 90 degrees, and 20 degrees cannot form a triangle because they do not satisfy the triangle inequality theorem.

Learn more about Angles of a triangle

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Answer:

no. never.

Step-by-step explanation:

total internal angles of a triangle sum to 180. 90 + 90 is 180 so no, you cannot have a triangle with sides 90 90 and 20. it is possiblw to have 90 45 and 45 though

Which of the following is a perfect square? A)154 B)169 C)279 D)115

Answers

A) 154 because it's an even number

Answer:

B

Step-by-step explanation:

Multiply two of the same will give you a perfect square like 13 x 13 is 169

Simplify 2m - [n - (m - 2n)].
-3m - n
3m - n
-3m - 3n
3m - 3n

Answers

you get 2m+m-3n which simplifies to    3m-3n