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Lady bird [3.3K]
3 years ago
15

the cost of a phone call lasting 3 minutes 30 seconds was 52.5 cents . at this rate what was the cost of a call lasting 5 minute

s 20 second
Mathematics
1 answer:
Effectus [21]3 years ago
6 0

Answer:

80 cents

Step-by-step explanation:

The easiest place to start for this is to calculate how much it costs per minute of call time. To do this, if we know that it costs 52.5 cents to call for 3.5 minutes, we can divide those two numbers to get how much it costs per minute.

52.5/3.5 = 15

If it costs 15 cents per minute, and we want to know how much it would cost to call for 5.33 (5 and 1/3 of a minute), then we multiply our 15 cents a minute by the number of minutes to get the final cost.

15 x 5.33 = 79.99

Because we can't have 99/100 cents, rounding up to 80 is important to get a proper answer.

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I need help pls help me
Leni [432]

Answer:

Allison

Step-by-step explanation:

Allison:

2^6 = 64

Chris:

3³ = 27

Hannah:

4² = 16

Steve:

18^1 = 18

5 0
3 years ago
Read 2 more answers
A large consumer goods company ran a television advertisement for one of its soap products.
zaharov [31]

Answer:

Step-by-step explanation:

Given that a large consumer goods company ran a television advertisement for one of its soap products.

B = individual purchased the product S = individual recalls seeing the advertisement B∩S = individual purchased the product and recalls seeing the advertisement

The probabilities assigned were P(B)=.20,P(S)=.40, and P(B∩S)=.12

a) P(B/S) = \frac{P(B\bigcap S}{P(S)} \\=\frac{0.12}{0.40} \\=0.30

Yes we can continue the advt since P(B/A) >P(B)

b)

It is preferable to continue advt as chances of purchase after seeing advt is more than purchase without seeing advt.

c) P(B/S) =\frac{P(B\bigcap S}{P(S)} \\=\frac{0.1}{0.3} \\=0.3333

The II advt has the bigger effect since conditional prob is more here.

7 0
3 years ago
A stone is dropped from a height of 490 meters. I how many seconds does it hit the ground?
sergij07 [2.7K]
Use this website: https://www.angio.net/personal/climb/speed.html
3 0
3 years ago
Help will give brainiliest if correct
Olenka [21]

Answer:

The first answer choice= y = 50x

Step-by-step explanation:

Because you find a point on the graph that is exactly on a point and divide the y by the x and you get the constant. THen in the answer choices only  y = 50x is a larger number than 25 which in this case is the constant!

Hope this Helps!

8 0
2 years ago
The efficiency for a steel specimen immersed in a phosphating tank is the weight of the phosphate coating divided by the metal l
34kurt

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

Temp. 174 176 177 178 178 179 180 181

Ratio 0.86 1.31 1.42 1.01 1.15 1.02 1.00 1.74

Temp. 184 184 184 184 184 185 185 186

Ratio 1.43 1.70 1.57 2.13 2.25 0.76 1.37 0.94

Temp. 186 186 186 188 188 189 190 192

Ratio 1.85 2.02 2.64 1.53 2.48 2.90 1.79 3.16

A)

Using the online linear regression calculator, the lie of best fit which models the data above is :

ŷ = 0.09386X - 15.55523

Where ;

X = independent variable

ŷ = predicted or dependent variable

- 15.55523 = intercept

0.09386 = gradient / slope

B)

Point estimate when tank temperature is 186

ŷ = 0.09386(186) - 15.55523

ŷ = 17.45796 - 15.55523

ŷ = 1.90273

C)

Residual error (y - ŷ), ŷ = 1.90273 when x = 186

(0.94 - 1.90273) = −0.96273

(1.85 - 1.90273) = −0.05273

(2.02 - 1.90273) = 0.11727

(2.64 - 1.90273) = 0.73727

D)

To determine the proportion of observed variation in efficiency ratio, we find the Coefficient of determination R^2, which can be found using the online Coefficient of determination calculator : the r^2 value obtained is 0.4433.

5 0
3 years ago
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