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OLEGan [10]
2 years ago
8

The price of a 5-minute call is 1.50 what is the price of a 12-minute call

Mathematics
2 answers:
nasty-shy [4]2 years ago
7 0

Answer:

3.70

Step-by-step explanation:

OLga [1]2 years ago
3 0
3.60

1.50/5 to figure out how much money is every minute which is $0.3

multiple 0.3 x 12 and you get $3.60
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It is stated that a quantity varies directly as another if the two quantities always change in the same ratio. So, what would ha
lys-0071 [83]

Answer:

2k

Step-by-step explanation:

Let k  is the ratio between two variables or y = kx

when x double, means: y = k (2x) = 2kx  quantity y will change with a ratio 2k

5 0
2 years ago
Daisy spent a total of $31 before tax on ice cream. the table below shows the different flavors she bought. a carton of strawber
notsponge [240]
The cost of 1 vanilla ice cream and 1 strawberry ice cream should total to $31. Since you only bought one of each flavor, you simply have to add their unit prices. 

Cost for 1 carton of strawberry ice cream + Cost for 1 carton of vanilla ice cream = Total Cost
Total Cost = s + v  --> this is the general equation

Since s = 1.5 + v, the modified equation would be
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5 0
3 years ago
A car is driving down I-55 approaching the exit for two cities: Angleton and Bisectorville. Both towns are 3.14 miles to I-55 an
Shtirlitz [24]

Answer:

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i think i help.(sorry if it is not correct)

Step-by-step explanation:

7 0
3 years ago
8. A substance has a half life of 2.347 minutes.
mina [271]

Answer:

a.) 4 half lives have passed

b) 9.388 minutes

Step-by-step explanation:

Formula for exponential growth / decay is given as:

A=A_0b^{\frac{t}{c}}

Where A is the final population

A_0 is the initial population

b is the growth factor

c is the time taken for the growth 'b'

t is the amount of time

Here, we are given that:

A = 6. 9 grams

A_0 = 110.4 grams

b = \dfrac{1}{2}

c = 2.347 min

To find:

a.) Number of half lives taken for the decay.

b.) Total time in the decay.

Solution:

a.) Number of half lives taken for the decay is nothing but equal to \frac{t}{c}.

Putting the values in the formula, we get:

6.9=110.4\times \frac{1}2^{\frac{t}{c}}\\\Rightarrow 6.9=110.4\times 0.5^{\frac{t}{c}}\\\Rightarrow 0.0625=0.5^{\frac{t}{c}}\\\Rightarrow \dfrac{t}{c} =4

Therefore, the answer is:

<em>4 half lives </em>have passed.

b.) Total time of decay. We have to find the value of t here.

From answer of part a.):

\dfrac{t}{c} =4\\\Rightarrow \dfrac{t}{2.347} =4\\\Rightarrow t =\bold{9.388\ min}

7 0
3 years ago
Can someone please answer these questions
Leona [35]

Answer:

15 . Undefined

16. undefined

Step-by-step explanation:

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2 years ago
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