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Anika [276]
3 years ago
12

Ashley's cell phone costs $5 per month plus 10 cents per minute. Her friend's costs $3 per month plus 15 cents per minute. For w

hat amount of talking time will the cost of these plans be the same?
Mathematics
1 answer:
lukranit [14]3 years ago
5 0

Answer:40 min

Step-by-step explanation:

5+.10x=3+.15x

-.10. -.10

5= 3+.05x

-3. -3

2=.05x

Divide by .05

X=40

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The cone shaped storage tank has a height=14 feet respectively.Find the volume of liquid the tank can hold.Round your answer to
Mnenie [13.5K]

The complete question is;

The height and diameter of a cone-shaped storage tank are 9 feet and 14 feet respectively. Find the volume of liquid the tank can hold. Round your answer to the integer, if necessary. Use the approximate of value of π, that is 3.14.

Answer:

Volume = 462 ft³

Step-by-step explanation:

We are given;

Height;h = 9 ft

Diameter;d = 14 ft

So, radius;r = 14/2 = 7 ft

Volume of a cone is given by;

V = ⅓πr²h

Where π = 3.14

Thus;

V = ⅓ × 3.14 × 7² × 9

V = 461.58 ft³

Approximating to nearest integer gives; V ≈ 462 ft³

7 0
3 years ago
Which of the following must describe a irrational number? A. a number with a repeating or terminating decimal expansion B. a num
Olenka [21]

Answer:

D.

Step-by-step explanation:

A irrational number can be defined as those numbers which are real but can NOT be expressed in simple fractions. The term 'irrational' means 'a number which can not be expressed in ratio of two integers', 'no ratio.'

<u>When a irrational number is expressed in decimal, the numbers keep on expanding without repeating andd without terminating, which means it keeps on expanding infinitely.</u>

For example, π (pi) is an irrational number. When it is expressed in decimals it keeps on expanding non-repeatedly and unendingly.

Another example of an irrational number is √2.

Thus the correct statement that defines irrational number is option D.

5 0
3 years ago
​A manager wants to know if the mean productivity of two workers is the same. For a random selection of 30 hours in the past​ mo
vekshin1

Answer:

A.The data should be treated as paired samples. Each pair consists of an hour in which the productivity of the two workers is compared.

Explanation:

If the mean productivity of two workers is the same.

For a random selection of 30 hours in the past month, the manager compares the number of items produced by each worker in that hour.

There are two samples and the productivity of the two men is paired for each hour.

7 0
3 years ago
Matt is given a jar with eight marbles, six of which are red and two of which are green. Matt then randomly draws marbles withou
Ber [7]

Answer:

as a percentage it is: 0.25 x 0.2 =0.05 or 5%
but as a common fraction it is: 5/100 or 1/20

Step-by-step explanation:

8 0
2 years ago
Hey guys did you know Brainly has a very nice app with some cool camera features?
love history [14]
Yes, Brainly is a very useful app. I love helping people, and it allows me to gain some help from others when needed :)
6 0
3 years ago
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