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3 years ago

7

Nathan cell phone company charges a monthly rate of $12.95 and $.25 a minute per call the bill for X minutes is $21.21 write any

Quetion that models the situation

1 answer:

Natalija [7]3 years ago

4 0

The answers should be about 9 minutes and 2.4 seconds.

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You deposit $4300 in an account that earns 2% per year simple interest. The equation that represents this situation is: A(n) = 4

Likurg_2 [28]

Answer: $4902

Step-by-step explanation:

Amount = P (1 + rt)

= 4300 (1 + .02 * 7)

= 4300 (1 + .14)

= 4300 (1.14)

= 4902

3 0

3 years ago

A water storage tank has the shape of a cylinder with diameter 14 ft. It is mounted so that the circular cross-sections are vert

andrezito [222]

Answer:

percentage of the total capacity is 75.6%

Step-by-step explanation:

Hello! To solve this problem we follow the following steps

1. draw the complete scheme of the problem (see attached image)

2. To solve this problem we must find the area of the circular sector using the following equation.(c in the second attached image)

$A=\frac{R^2}{2} (\alpha -sin\alpha )$

$\alpha =2arccos(\frac{d}{R})$

3. observing the attached images we replace the values in the equations and find the area of the circular sector, remember that you must transform the angle to radians

$\alpha =2arccos(\frac{5}{7})=88.83$

$A=\frac{R^2}{2} (\alpha -sin\alpha )\\A=\frac{7^2}{2} (88.83-sen88.83)*\frac{\pi rad}{180} =37.57ft^2$

4.we calculate the area of the total circle (At), then subtract the area of the circular sector (Ac) to find the area occupied by water (Aw)

$At=\frac{\pi }{4} (14ft)^2=153.93ft^2$

Aw=At-Ac=153.93-37.57=116.36ft^2

5.Finally, we calculate the percentage that represents the water in the tank by dividing the area of the water over the total area of the tank

$\frac{116.36}{153.93} *100=75.6$

percentage of the total capacity is 75.6%

3 0

3 years ago

In the following expression, both A and B are variables that can take positive values.

krok68 [10]

I think the answer is A and C!

7 0

3 years ago

This questionn please

nasty-shy [4]

Let X be the total number of guests
$\frac{1}{3} x + \frac{5x}{12} + 23 \\ \frac{12x + 15x + 828}{36} \\ \frac{17x + 828}{36}$
when X =1
(17+828)/36
845/36=23.5
am sorry but the question is not that clear
pls mark as brainliest

8 0

3 years ago

I have 20 pairs in my closet and 12 pairs are sneakers. What percentage of the shoes are pairs of sneakers?

Zolol [24]

Answer:

Prosperly, 60%

Step-by-step explanation:

3 0

3 years ago