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kati45 [8]
3 years ago
7

Ivan biked 1 2/3 hours on monday 2 1/3 hours on tuesday and 2 2/3 hours on wednesday how many hours ivan spent biking

Mathematics
1 answer:
Ket [755]3 years ago
7 0
56 hr an 40 min because 34+21=55+1hr from 3half+3half=1hr and 10min+30min will be 40 min its 55hr 40min.
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Find the values of y which makes the expression (2y + 7) /(y2 - 2y - 15) undefined?
sammy [17]

The  given expression becomes undefined when y=5 or y = -3. The answer is option D.

Step-by-step explanation:

The value of the given expression becomes undefined when the denominator equals 0.

Hence to find the value of y which makes the expression undefined, we can equate the value of the denominator to zero and solve it .

Step 1

  Equate the denominator to 0.

  y^{2}  - 2y -15 = 0

Step 2

   Solve the above equation to get the value of y.

     y^{2}  - 2y -15 = 0

    => (y-5)(y+3) =0 [ Roots of the quadratic equation]

   => y = 5 or y = -3.

Hence when y = 5 or y = -3 the denominator becomes 0, which makes the expression (2y+7)/0  and hence it is undefined.

 

8 0
3 years ago
V= u + at<br> u= 2<br> a = -5<br> t = 1 글<br> Work out the value of v.
Maksim231197 [3]

Answer:

v = - 3

Step-by-step explanation:

Given

v = u + at ← substitute u = 2, a = - 5, t = 1 into the expression

v = 2 + (- 5 × 1) = 2 + (- 5) = 2 - 5 = - 3

5 0
3 years ago
Find the percent decrease round to the nearest percent from 93 Fahrenheit to 58 Fahrenheit the percent decrease is what percent
Elden [556K]

Answer:

  • 38%

Step-by-step explanation:

  • Initial value = 93 F
  • Final value = 58 F

Decrease

  • 93 - 58 = 35 F

Percent decrease

  • 35/93*100% = 38 % rounded
5 0
3 years ago
Question attached below
Elodia [21]

Answer:

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Step-by-step explanation:

Please give me brainliest :)

6 0
2 years ago
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The product of a number and 9, increased by 4, is 58. Find the number
ella [17]

Answer:

first do 58-4 which is 54 then do 54/ 9 which is 6 so the number is 6

8 0
2 years ago
Read 2 more answers
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