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kupik [55]
3 years ago
14

A cell phone company has a monthly charge of 10 dollars for unlimited minutes and 15 cents for each text message. These charges

can be expressed as 10+.15t, where t represents the number of text messages sent.
Mathematics
1 answer:
professor190 [17]3 years ago
8 0

Answer:

I've seen your responses to the incomplete question. Now here is the answer:

The number of extra messages sent was 285.

&

The formula to get the total amount spent for the month on messages is;

$10 + $0.1t ;where t= the extra messages after the first 1000 sent for the month

Step-by-step explanation:

Let the cost of each additional message be "t"

Since the unit of total monthly cost was in dollars, let's convert the 10cents to dollars.

Since 100 cents = 1 dollars

Therefore 10 cents = 10/100 = $0.1

We can say that the total cost of the remaining text messages sent for the month was 0.1 x t = $0.1t

The cost of first 1000 messages is $10 dollars a month.

Therefore, total amount spent is $10 + 0.1t

Since we were given that he spent a total of $38.5 for that month,

We can say that $10 + $0.1t = $38.5

Subtract $10 from both sides;

$10 - $10 + $0.1t = $38.5 - $10

To give; $0.1t = $28.5

Dividing both sides 0.1, we get;

t = $28.5/$0.1 = 285

So the number of extra messages sent was 285.

The formula to get the total amount spent is;

$10 + $0.1t ;where t= the extra messages after the first 1000 sent for the month

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The ratio of money in Obi's wallet to Rudy's wallet one day was 5:2.
mamaluj [8]

Answer:

The amount that Obi initially had was £20

Step-by-step explanation:

Let

x ----> amount that Obi initially has

y ----> amount that Rudy has

we know that

\frac{x}{y} =\frac{5}{2}

x=2.5y ----> equation A

x-20=y-8

y=x-20+8

y=x-12 ----> equation B

Solve the system by substitution

substitute equation A in equation B

y=(2.5y)-12

solve for y

2.5y-y=12\\1.5y=12\\y=8

Find the value of x

x=2.5(8)=20

therefore

The amount that Obi initially had was £20

4 0
3 years ago
Katie gives Maggie half of her pencils. Maggie keeps 5 pencils and gives the rest to Jamil. A. Write an expression for the numbe
Alexandra [31]

Here's what I mean when I write <em>x/</em><em>2</em><em> </em><em>JUST </em><em>IN </em><em>CASE.</em>

а.

Let the total number of pencils be x, then this implies that Maggie received <em>x/</em>2 pencils from Katie. Maggie keeps 5 and give the rest to Jamil, this means

that Jamil receives

<em>x/</em>2-5 pencils.

b. Expression of pencils given to Jamil is: <em>x/</em>2-5

Substitute <em>x</em><em>=</em><em>1</em><em>6</em><em> </em>in this expression: <em>x/</em>2-5

Simplify and evaluate: = 8-5= 3

Maggie gives 3 pencils to Jamil.

c. Expression of pencils given to Jamil is: x/2-5 to

Equate this expression with 1 to form an equation and solve for <em>x</em> all, the total

number of pencils if Jamil received 1 pencil:

<em>x/</em>2 - 5 = 1

Solve for x:

<em>x</em> = 2(1+ 5)

Evaluate:

<em>x</em> = 2(6) = 12

Katie had 12 pencils if Jamil received 1 pencil.

RESULT

a. Expression of number of pencils given to Jamil is <em>x</em>/2-5, where x is total number of pencils.

b. Maggie gives 3 pencils to Jamil.

c. Katie had 12 pencils if Jamil received 1 pencil.

5 0
3 years ago
I WILL LITERALLY GIVE BRAINLIEST IF YOU ANSWER CORRECTLY
Yakvenalex [24]

Temperature can relate to how cold the ice cream cone is.

The ice cream cone(s) can relate to all the buildings in the city.

Step-by-step explanation:

4 0
3 years ago
What is the value of x?
Ksenya-84 [330]

Answer:

20

Step-by-step explanation:

2x - 5 = x + 15

2x - x = 5 + 15

x = 20

5 0
2 years ago
19) Solve the inequality. 7x − 9 &gt; 2x + 6 A) x &gt; 3 B) x &gt; 3 5 C) x &gt; −3 D) x &gt; − 3 5
Marianna [84]

Answer:

B

Step-by-step explanation:

Given

7x - 9 > 2x + 6 ( subtract 2x from both sides )

5x - 9 > 6 ( add 9 to both sides )

5x > 15 ( divide both sides by 3 )

x > 3 → B

8 0
3 years ago
Read 2 more answers
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