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kolezko [41]
3 years ago
13

EASY BRAINLEST! ONLY TWO QUESTIONS I NEED HELP ASAP!!

Mathematics
1 answer:
mash [69]3 years ago
6 0

Step-by-step explanation:

When you multiply both sides by a negative value you make the side that is greater have a "bigger" negative number, which actually means it is now less than the other side! This is why you must flip the sign whenever you multiply by a negative number.

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umka21 [38]

Answer:

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6 0
2 years ago
Find the value of the combination.<br><br> 21 C 3<br><br> 7,980<br> 2,660<br> 1,330
erik [133]
To evaluate the combination we proceed as follows:
21C3
Given nCk we shall have:
n!/[(n-k)!k!]
thus plugging the values in the expression we get:
21!/[(21-3)!3!]
=21!/(18!×3!)
=1330
Answer: 1330
4 0
3 years ago
A motorcycle is traveling at a constant speed of 75miles per hour. How many feet does it travel in 7seconds? Remember that 1 mil
Stella [2.4K]

770 feets per 7 seconds


5 0
3 years ago
Brian, Kelsey, and Geoff each have a remote-controlled car. They simultaneously started their cars and drove them in a straight
shutvik [7]

Answer:

Brian’s and Kelsey’s cars traveled at the same rate.

Step-by-step explanation:

3 0
2 years ago
What is the perimeter in centimetres of a regular octagon with sides measuring 17 mm?
Anit [1.1K]

Answer:

1.36 centimeters

Step-by-step explanation:

Given,

side length ( a ) = 17 mm

To find : Perimeter of regular octagon ( in cm )

Octagon has 8 sides.

Perimeter of regular octagon

= 8 x a

= 8 x 17

= 136 mm

1 mm = 0.1 cm

136 mm

= 136 x 0.1

= 1.36 centimeters ( cm )

Hence,

Perimeter of regular octagon is 1.36 centimeters.

7 0
2 years ago
Read 2 more answers
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