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Airida [17]
3 years ago
6

Which expression is equivalent to 21 × 7?

Mathematics
1 answer:
madreJ [45]3 years ago
7 0
7 x 21 is equivalent to 21 x 7
also 3 x 49
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Help!! Best answer gets brainliest
Nimfa-mama [501]
Use trigonometry and triangle congruency rules to find X
5 0
2 years ago
Mr Nersin likes to ride his bike. He rode for 1/2 hour. After a short rest, he rode 1/10 hour more. He traveled 4 miles in all.
vodomira [7]
The distance traveled by Mr.Nersin = 4 miles
The time for which Mr.Nersin rode first = 1/2 hour
The time for which Mr.Nersin rode after a short rest = 1/10 hour
Then
The total time for which Mr.Nersin rode = (1/2) + (1/10) hour
                                                                = (5 + 1)/10 hour
                                                                = 6/10 hour
                                                                = 3/5 hour
So
Average speed of Mr. Nersin = Distance traveled / Time taken
                                                = 4/(3/5) miles/hour
                                                = (4 * 5)/3 miles/hour
                                               = 20/3 miles/hour
                                                = 6 2/3 miles/hour
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So the average speed at which Mr.Nersin traveled is 6 2/3 or 6.67 miles per hour.
6 0
3 years ago
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PLEASE HELP, I A NOT SURE IF THIS IS THE RIGHT ANSWER
Y_Kistochka [10]

Answer:

yeb it is

Step-by-step explanation:

6 0
3 years ago
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Lady_Fox [76]

Answer:

This statement is false. Exterior angles are the angles created when the sides of the triangle are extended.

Step-by-step explanation:

Exterior angles are the angle between the any reference side and line extended from the adjacent side.

the sum of exterior and interior angle is 180 as it lies on a straight line.

_______________________________________________

based on above definition the given statement becomes false.

Hence, correct choice is option third

This statement is false. Exterior angles are the angles created when the sides of the triangle are extended.

5 0
3 years ago
Determine the value of x in each figure.
velikii [3]

Answer:

x=15is your answer

Step-by-step explanation:

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