1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kaylis [27]
3 years ago
9

During one month of cell phone use, Noah used 200 anytime minutes and 400 text messages, and paid $80. the next month, he used 1

50 anytime minutes and 350 text messages, and paid $67.50. which statement is true?
a) each text message costs 5 cents more than each anytime minute
b) each anytime minute costs 10 cents more than each text message
c) a text message and an anytime minute each costs 25 cents
d) each text message costs double the amount of an anytime minute
Mathematics
2 answers:
lutik1710 [3]3 years ago
6 0

Answer: a) each text message costs 5 cents more than each anytime minute


Step-by-step explanation:

Let x be the cost of anytime minutes and y be the cost of text messages.

Then for the first month, equation for the total amount Noah paid

200x+400y=80\\\Rightarrow5x+10y=2..\text{[divide 20 on both sides]}\\\Rightarrow15x+30y=6....\text{[multiply 3 on both sides]}...(1)

For the second month, equation for the total amount Noah paid

150x+350y=67.5\\\Rightarrow15x+35y=6.75....\text{[divide 10 on both sides]}....(2)

Now subtract equation (1) from equation (2), we get

5y=0.75\\\Rightarrow\ y=0.15

Put y=0.15 in (1), we get

5x+10(0.15)=2\\\Rightarrow5x+1.5=2\\\Rightarrow\ x=\frac{2-1.5}{5}=0.10\\\Rightarrow\ x=0.10

Thus, the cost of anytime minutes(x)= $0.10= 10 cents

and the cost of test messages(y)=$0.15=15 cents

Difference=15-10=5 cents

Hence,  each text message costs 5 cents more than each anytime minute.

V125BC [204]3 years ago
3 0
The statement A is true since on forming the quadratic equations formed you will find the cost of a message being 15 cents and that of anytime as 10 cents.
You might be interested in
Kari thinks, "x is the difference between 87 and 34.25 is this true or not?
Pavlova-9 [17]
This is true because it is an unknown number so it is replaced by a variable.
4 0
3 years ago
HELP PLS i need HELP PLSSSS
umka21 [38]

Answer:

y=3

Step-by-step explanation:

It is a plateau unaffected by x, thus there is no x.

3 0
2 years ago
Read 2 more answers
Please help me with this because I am completely lost on this
baherus [9]

Answer:

i think you multiply them or add them

Step-by-step explanation:

4 0
2 years ago
What is the product 2•(-7) A.-9<br> B.-2<br> C.-14<br> D.14
Leno4ka [110]

Answer:

-14 (C)

Step-by-step explanation:

2 x -7 would be -14 because 2 x 7 is 14, but since 7 is negative it would be -14/C

6 0
3 years ago
Hello, can someone help me!! I have tried every combination possible and I still cannot find the answer. The picture shows the q
il63 [147K]

Answer:

5.01

Step-by-step explanation:

if she can go 6.7 miles in an hour, then the way we find out how much she does in 3/4 of an hour is divide 6.7 by 4. 6.7/4=1.67 and then, to get 3/4, we multiply 1.67 by 3.

Brainliest please

7 0
3 years ago
Other questions:
  • Hey can you please help me posted picture of question:)
    15·2 answers
  • A culvert is constructed out of large cylindrical shells cast in concrete, as shown in the figure. Using the formula for the vol
    10·1 answer
  • Plz, the question is below!
    11·1 answer
  • Sara bought an $11 mop and 6 sponges. She spend a total of $20. Each sponge coat the same amount. Write an equation that can be
    11·1 answer
  • How to solve two step equations
    13·1 answer
  • If 20 coins are tossed, find the probability that they'll all land on tails.
    9·1 answer
  • Help me plz give the right awenser
    10·1 answer
  • Manny has 48 feet of wood. He wants to use all of it to create a border around a garden. The equation can be used to find the le
    6·2 answers
  • A Woman Is 72 Years Old But She Has Only 18 Birthdays ! why ?
    12·2 answers
  • How do you divide factorials by lesser factorials again?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!