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lisabon 2012 [21]
2 years ago
5

Jennifer travels from Boston , Massachusetts, to Fairfield, Connecticut, a distance of 90 miles, at a speed of 45 miles per hour

, and returns at a speed of 60 miles per hour. To the nearest half mile per hour, what is Jennifer's average rate for the whole trip?
A) 50 1/2
B) 51
C) 51 1/2
D) 52 1/2
E) 53 1/2
Mathematics
1 answer:
Natali5045456 [20]2 years ago
3 0

Answer: 52 1/2

Step-by-step explanation: I just found the average of the numbers.

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Figure
ludmilkaskok [199]

Answer:

  • a rotation, followed by a translation
  • a translation, followed by two reflections

Step-by-step explanation:

The rigid motions are the transformations that produce congruent images.

There are three main kinds of rigid motions  :

  • Reflections : Flips a figure across a line of reflection.
  • Rotations : Rotates a figure about some degrees around a center point.
  • Translations : Moves figure on a plane about some distance in a certain direction.

But dilation is not a rigid transformation because it may change the size of the image. It is usually used to shrink or enlarge a shape.

So, the options having dilation and term "stretch" cannot produce congruent figures.

Hence, the correct options are :

  • a rotation, followed by a translation
  • a translation, followed by two reflections
5 0
3 years ago
Most __________ signs are rectangular, with the longer dimension vertical, and have a white background.
Furkat [3]

Answer:

Regulatory

Step-by-step explanation:

the rectangular sign with longer vertical dimension and have white background  are called regulatory signs.

regulatory signs are those signals which are used to indicate or reinforce traffic laws.

these regulatory sign informs the driver and tell them to apply the traffic law at certain required places.

6 0
3 years ago
What is the equation of the circle whose center and radius are given.
muminat
Hello!

The equation for a circle is

(x - h)^{2}  + ( y - k)^{2} =  r^{2}

(h,k) is the center
r is the radius

Put in the values you know

(x - 7)^{2} + ( y + 3)^{2} = 7^{2}

Simplify

(x - 7)^{2} + ( y + 3)^{2} = 49

The equation is (x - 7)^{2} + ( y + 3)^{2} = 49

Hope this helps!
5 0
3 years ago
Read 2 more answers
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Ghella [55]

Answer:

the answer is A

Step-by-step explanation:

3 0
3 years ago
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a point with a positive x-coordinate and a negative y-coordinate is reflected over the y-axis. are the new points positive or ne
geniusboy [140]

Answer:

negative

Step-by-step explanation:

6 0
3 years ago
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