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Irina-Kira [14]
4 years ago
15

Li can walk 2 miles in 45 minutes.At that rate,how far can she walk in 135 minuets.

Mathematics
1 answer:
Zielflug [23.3K]4 years ago
8 0
Li can walk 6 miles. if you divide 135 and 45, you'll get 3. finally, if you multiply 2 and 3, you'll get 6. So, in total, Li walks 6 miles.
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Equivalent to 3n + 2(1 - 4n)
kirill115 [55]

Answer:

5n+2

Step-by-step explanation:

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3 years ago
For her phone service, Martina pays a monthly fee of $25, and she pays an additional $0.07 per minute of use. The least she has
Mekhanik [1.2K]

Answer: Anything that is 1202 or larger

In other words, m \ge 1202

So we could have m = 1202, or m = 1203, or m = 1204, etc.

===============================================

Explanation:

  • m = number of minutes used
  • 0.07m = amount charged for those minutes used excluding the $25
  • 0.07m+25 = total monthly bill now including the extra $25 fee

The monthly bill is at least $109.14, since this is the lowest amount she has been charged.

\text{monthly bill} \ge 109.14\\\\0.07m+25 \ge 109.14\\\\0.07m \ge 109.14-25\\\\0.07m \ge 84.14\\\\m \ge \frac{84.14}{0.07}\\\\m \ge 1202\\\\

This says that the least number of minutes Martina has used is 1202 minutes.

So if m was a whole number, then m could be selected from the set {1202, 1203, 1204, ...}

Side note: 1202 minutes = 1202/60 = 20.033 hours approximately.

8 0
3 years ago
Find the value of X<br> Answers:<br> A. 7<br> B. 25<br> C. 11<br> D.18
Lina20 [59]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If the discriminate is equal to -2, how many solutions are there
defon

Answer:

huh?

Step-by-step explanation:

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3 years ago
Please help me with this problem
Naya [18.7K]

Answer:

Dasha has 52 roses

Step-by-step explanation:

Rewrite the first sentence in an equation: (D= Dasha) (A= Anna)

D=4A

Rewrite the second sentence in an equation:

A+39=D

1) Substitute A+39 as D in the first equation:

A+39=4A

2) Subtract A from both sides:

3A=39

3) Divide both sides by 3:

A=13

4) Now substitute 13 as A in the second equation:

13+39=D

5) Solve:

D=52

4 0
3 years ago
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