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slega [8]
3 years ago
11

tamara has completed 60% of her practice time for the track meet. If she is expected to practice for 18h, how long has she alrea

dy practiced?
Mathematics
1 answer:
anyanavicka [17]3 years ago
4 0

Answer:

10h and 48min

Step-by-step explanation:

60*18=1080

1080/100=10.8

so 10.8h which means 10 hours and 48 min

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. Laura and Alicia both exercise 5 days a week. Laura exercises for 30 minutes each day. Alicia exercises for 45 minutes each da
statuscvo [17]

Answer: 1 hour 15 minutes

Step-by-step explanation:

From the question, we are informed that Laura and Alicia both exercise 5 days a week and that Laura exercises for 30 minutes each day. For the 5 days, she'll exercise for:

= 5 × 30 minutes

= 150 minutes

= 2 hours 30 minutes

Alicia exercises for 45 minutes each day. Fir the 5 days, she'll exercise for:

= 5 × 45 minutes

= 225 minutes

= 3 hours 45 minutes

We then calculate the difference in their exercise per week which will be:

= 3 hours 45 minutes - 2 hours 30 minutes

= 1 hour 15 minutes

6 0
3 years ago
What is the y-intercept of the equation of the line that is perpendicular to the line y =
igor_vitrenko [27]

Answer:

y=-5/3x+20

Step-by-step explanation:

Let the equation of the required line be represented as \[y=mx+c\]

This line is perpendicular to the line \[y=\frac{3}{5}x+10\]

\[=>m*\frac{3}{5}=-1\]

\[=>m=\frac{-5}{3}\]

So the equation of the required line becomes \[y=\frac{-5}{3}x+c\]

This line passes through the point (15.-5)

\[-5=\frac{-5}{3}*15+c\]

\[=>c=20\]

So the equation of the required line is \[y=\frac{-5}{3}x+20\]

Among the given options, option 4 is the correct one.

3 0
3 years ago
What is 1 ten more than 9 ones
Evgesh-ka [11]
19 because 1 ten = 10 ones and 9 one plus 10 ones equals 19 altogether
6 0
3 years ago
Which expression is equivalent to the square root of 2^5/18
blsea [12.9K]
1.77777777778 would be the answer you are looking for I think.
6 0
3 years ago
Suppose that the manager of a company has estimated the probability of a super-event sometime during the next five years that wi
daser333 [38]

Answer:

The answer is d) 0.2303%

6 0
3 years ago
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