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Zepler [3.9K]
3 years ago
12

There are 2 cell phone plans available from Cell phones R us company. Plan A charges 35$ a month plus $0.05 for every text messa

ge. Plan B charges $50 a month plus $0.01 for every text message. How many text messages do you need to send in order for plan A to be cheaper than plan B?
A.) 35 + 0.05m > 50 + 0.01m

B.) 35 + 0.05m > 50 + 0.01m

C.) 35 + 0.05m ≤ 50 + 0.01m

D.) 50 + 0.05m > 35 + 0.01m
Mathematics
2 answers:
kkurt [141]3 years ago
5 0
The correct inequality is letter a.
You have to send more than 375 text messages for Plan B be cheaper than plan A
likoan [24]3 years ago
5 0
Okay. I think you mean how many text messages must you send, until plan B is cheaper than plan A. Plan A is the one with the $30 fixed amount and plan B is the one with the $50 dollar fixed amount. The key words "cheaper than" means that our sign will be less than, not less than or equal to. Therefore, C is out.  We are looking for plan B ($50 fixed amount) to be less than. B and D are out, because those are greater than symbols toward plan B. A is the only one that shows the proper answer, and when you solve it right, you get m > 375. You would have to send 376 messages in order for plan B to be cheaper. The answer is A.
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Amanda leaned a 15-foot ladder against the top of her house so she could get on the roof, which is 12 feet from the ground.
valentinak56 [21]

If you're trying to find the missing side of the "triangle" (the distance from the house to where the ladder touches the ground), you would use the pythagorean theorem, a²+b²=c². (c is always hypotenuse)

a²+b²=c²

12²+b²=15²

144+b²=225

b²=81

√b²=√81

b=9


8 0
3 years ago
A single cell can either die, with probability0.1, or split into two cells, withprobability0.90, producing a new generation of c
Finger [1]

Answer: The probability distribution for the number of cells in the third generation is a Binomial distribution.

Step-by-step explanation:

We use binomial distribution when we have repeated process and the outcome is either a success or a failure.

The probability of success. P ( probability of dying). The probability of failure q ( probability of splitting into two).

The formula for binomial distribution is : n combination x multiplied by p raised to power x multiplied by q raised to power n-x.

3 0
3 years ago
A group of adults plus one child attend a movie at a movie theater. Tickets cost $9 for adults and $4 for children. The total co
egoroff_w [7]

Answer:

There is <u>8</u> adults and <u>1 </u>child

Step-by-step explanation:

<u>$78 - $6 = $72</u>

<u>$72 divided by 9 = 8</u>

you would add nine <u>8</u> times and add 6 to it then it would be $78
Hope this helps you! :)

6 0
3 years ago
I want to be smart at school and I am getting really for the test too.
kicyunya [14]
Great job was is you strategies 
4 0
3 years ago
The expression<br>3(x+6)-x<br>can be simplified to the form<br>2x + a)<br>What is the value of a?​
timofeeve [1]

Answer:

a = 18

Step-by-step explanation:

3(x+6)-x = 2x + a

Distribute

3x +18 -x = 2x+a

2x +18 = 2x+a

Subtract 2x from each side

18 = a

8 0
3 years ago
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