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Goshia [24]
3 years ago
9

The price of a 7​-minute phone call is ​$2.45. What is the price of a 13​-minute phone​ call?

Mathematics
2 answers:
Umnica [9.8K]3 years ago
5 0
If 7 minutes is $2.45, then 13 minutes is $4.55 cuz 1 minute is 0.35 cents
nevsk [136]3 years ago
5 0
 Okay so you have $2.45 to a 7 minute phone call just times $2.45 by 13

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He short sides of a rectangle are 2 inches. The long sides of the same rectangle are three less than an unknown number of inches
goldenfox [79]
The sum of two adjacent sides is 11 inches, so the long sides are 9 inches. The "unknown number" must be 12.
7 0
3 years ago
Triphasil-28 birth control tablets are taken sequentially, 1 tablet per day for 28 days, with the tablets containing the followi
bazaltina [42]

Answer:

1.925mg of levonorgestrel and 0.68mg of ethinyl estradiol are taken during the 28-day period.

Step-by-step explanation:

The total milligrams of levonorgestrel is:

L = L_{1} + L_{2} + L_{3}

In which L_{1}, L_{2} and L_{3} are the number of miligrams of levonorgestrel taken in each phase.

The total milligrams of ethinyl estradiol is:

E = E_{1} + E_{2} + E_{3}

In which E_{1},E_{2} and E_{3} are the number of miligrams of ethinyl estradiol taken in each phase.

We can solve this by phase.

Phase 1: 6 tablets, each containing 0.050 mg of levonorgestrel and 0.030 mg ethinyl estradiol

In this phase,

6*0.050mg = 0.30mg of levonorgestrel and 6*0.030mg = 0.18mg of ethinyl estradiol are taken.

So L_{1} = 0.30 and E_{1} = 0.18

Phase 2: 5 tablets, each containing 0.075 mg of levonorgestrel and 0.040 mg ethinyl estradiol

In this phase,

5*0.075mg = 0.375mg of levonorgestrel and 5*0.040mg = 0.20mg of ethinyl estradiol are taken.

So L_{2} = 0.375 and E_{2} = 0.20

Phase 3: 10 tablets, each containing 0.125 mg of levonorgestrel and 0.030 mg ethinyl estradiol

In this phase,

10*0.125mg = 1.25mg of levonorgestrel and 10*0.030mg = 0.30mg of ethinyl estradiol are taken.

So L_{3} = 1.25 and E_{3} = 0.30

The total milligrams of levonorgestrel is:

L = L_{1} + L_{2} + L_{3} = 0.30 + 0.375 + 1.25 = 1.925

The total milligrams of ethinyl estradiol is:

E = E_{1} + E_{2} + E_{3} = 0.18 + 0.20 + 0.30 = 0.68

1.925mg of levonorgestrel and 0.68mg of ethinyl estradiol are taken during the 28-day period.

6 0
3 years ago
Hi<br><br> what is 9257289357218q4918 x 5823829.94325892580254
lana [24]

Answer:

ridiculous

Step-by-step explanation:

tssssk *extra characters*

3 0
3 years ago
Read 2 more answers
A 4​-ft vertical post casts a 12​-in shadow at the same time a nearby cell phone tower casts a 122​-ft shadow. How tall is the c
zepelin [54]

Answer:

the cell phone tower is 488 ft

Step-by-step explanation:


change 12 in = 1ft

4ft                            x ft

------------------- =   ----------------

1ft  shadow           122 ft shadow


using cross products

4 * 122 = 1 * x

488 = x

3 0
3 years ago
Is 3(a+b) = to 3a+3b​
Tanzania [10]

Answer:

Yes. Distributive property

Step-by-step explanation:

3(a + b)

Opening bracket

= 3(a) + 3(b)

= 3a + 3b

8 0
3 years ago
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