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Hatshy [7]
3 years ago
7

20 points!

Mathematics
2 answers:
Sveta_85 [38]3 years ago
8 0

Translations, rotations, and reflections are all rigid transformations.

marissa [1.9K]3 years ago
8 0

Answer:

B,C and E

Step-by-step explanation:

You might be interested in
If an object takes 7 second to fall to the ground, what was its initial height? Show your work.
Verdich [7]

Answer:240.1 m

Step-by-step explanation:

We are given the following equation that models the the time it takes to an object to fall to the ground:

t_{(H)}=\sqrt{\frac{2H}{g}}

Where:

t_{(H)}=7 s is the time it takes to the object to fall to the ground

H is the object's initial height

g=9.8 m/s^{2} is the acceleration due gravity

Isolating H:

t^{2}=(\sqrt{\frac{2H}{g}})^{2}

t^{2}=\frac{2H}{g}}

H=\frac{t^{2}g}{2}

Solving with the given data:

H=\frac{(7 s)^{2}(9.8 m/s^{2})}{2}

H=240.1 m This is the initial height

8 0
3 years ago
Can someone please help me with this problem
alukav5142 [94]

Answer:

A kite with a 100 foot-long string is caught in a tree. When the full length of the string is stretched in a straight line to the ground, it touches the ground a distance of 30 feet from the bottom of the tree. Find the measure of the angle between the kite string and the ground.

17°

27°

63°

73°

Step-by-step explanation:

5 0
4 years ago
How many different committees of 4 people can be chosen from a group of 21?
sdas [7]

Answer:

There are 21 ways to choose the first person, 20 ways to choose the second, 19 ways for the third and 18 ways for the fourth so the answer is 21 * 20 * 19 * 18 = 143640.

4 0
3 years ago
Rewrite using a single positive exponent.<br> 78<br> 73
vivado [14]
Hey! I don’t know if this is what you mean.. but I tried to understand it.

78^1
73^1

Have a good day :)
3 0
3 years ago
Danny and Bella order eggs for $5.45, pancakes for $3.10, and 2 mugs of cocoa for $1.10
noname [10]

Answer:

$3.40

Step-by-step explanation:

$5.45 + $3.10 + $1.10 + $1.10 = $10.75

$10.75 + $0.85 = $11.60

$15.00 - $11.60 = $3.40

4 0
3 years ago
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