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nevsk [136]
3 years ago
11

which expression DOES NOT represent a square root of a perfect square integer? A) 100 B) 64 C) 81 D) 89

Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
4 0
Its 89 because 9 times 2 is 81 and 10 times 2 is 100 there nothing to multiple 2 by something to get 89
Alex17521 [72]3 years ago
4 0
The answer is:  [D]:  "89" .
_____________________________________________
Note:
_____________________________________________

√100 = 10 ; 

√64  = 8 ;

√81  = 9 ; 

√89 = 9.4339811320566038 .
____________________________________________________
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Dvinal [7]
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8 0
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Answer:

90

Step-by-step explanation:

so first do 120 divided by 4 is 30. Then multiply it by 3 to get 90.

7 0
2 years ago
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Tomas and Tasha were hiking at a speed of 3.5 mph. On their way back, they were tired and their speed was 2 mph. How long was th
Anna35 [415]

 To get the length of the route use the expression for speed,

Distance = Speed × Time

Length of the route is 7 miles.

It's given in the question,

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Therefore, distance travelled by both with the speed of 2 mph one way will be,

 Distance = 3.5t [Here, t = time ]

Speed of both while coming back = 2 mph

And the time taken = t + (1 hour 30 minutes)

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Therefore, distance travelled while coming back = Speed × Time

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Since, length of the route is same both ways,

3.5t = 2(t + 1.5)

3.5t = 2t + 3

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1.5t = 3

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Now substitute the value of t in the expression to get the distance of the route,

Distance = 3.5t

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Learn more,

brainly.com/question/1955818

7 0
2 years ago
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Just add all 3 numbers up together:

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So for three days derrick rode for 24 km 

Hoped I helped :)

7 0
3 years ago
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dsp73
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