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
Kisachek [45]
2 years ago
6

Carlos is mailing packages. Each small package costs him $2.40 to send. Each large package costs him $2.90. How much will it cos

t him to send 1 small package and 3 large packages?
Mathematics
2 answers:
aalyn [17]2 years ago
8 0

Answer:

$11.10

Step-by-step explanation:

1 small package = $2.40

1 large package = $2.90

1 small package + 3 large packages.

2.40 + (3 × 2.90)

=2.40 + 8.70

=11.1

Vlad [161]2 years ago
3 0

Answer:

$11.10

Step-by-step explanation:

This problem can be modeled by 2.4x+2.9y=c

x=small packages

y=large packages

c=total cost

By plugging in the values you get 2.4(1)+2.9(3)=c

2.4+8.7=c

c=11.1

Therefore the total cost is $11.10

You might be interested in
Please help ASAP!!!!!!!!!!!
Sergeeva-Olga [200]

Answer:

it's too blurryyyyyyyyyyyyyyyyyyyyy

4 0
3 years ago
Mr. Smith traveled to a city 300 miles from his home to attend a meeting. Due to car trouble, his average speed returning was 6
Kryger [21]

Answer: The speed at which he traveled to the city is 69.8 mph

Step-by-step explanation:

Let x represent the speed at which he traveled to the city.

Mr. Smith traveled to a city 300 miles from his home to attend a meeting.

Time = distance/speed

Time taken to travel to the city is

300/x

Due to car trouble, his average speed on returning was 6 mph less than his speed going. This means that the speed at which he returned is (x - 6) mph. Time taken to return from the city is

300/(x - 6)

If the total time for the round trip was 9 hours, it means that

300/x + 300/(x - 6) = 9

Cross multiplying by x(x - 6), it becomes

300(x - 6) + 300x = 9x(x - 6)

300x - 1800 + 300x = 9x² - 54x

9x² - 54x - 300x - 300x - 1800 = 0

9x² - 654x -1800 = 0

Applying the general quadratic equation,

x = [- b ± √(b² - 4ac)]/2a

From the equation given,

a = 9

b = - 654

c = 1800

Therefore,

x = [- - 654 ± √(- 654² - 4 × 9 × 1800)]/2 × 9

x = [654 ± √(427716 - 64800)]/18

x = [654 ± √362916.4]/18

x = (654 + 602.4)/2 or x = (654 - 602.4)/18

x = 1256.4/18 or x = 51.6/18

x = 69.8mph or x = 2.9 mph

The speed at which he traveled to the city is 69.8 mph

By checking,

Time spent travelling to the city = 300/69.8 = 4.3 hours

Time spent returning =

300/(69.8 - 6) = 4.7 hours

4.3 + 4.7 = 9 hours

3 0
3 years ago
If gasoline costs 2.14 per gallon and you drive 500 miles in a car that gets 30 mpg, what is the cost of gasoline
Vlad [161]

Answer:

35.7

Step-by-step explanation:

First, you would calculate how many gallons of gasoline the car gets. To do this, divide your total mileage of 500 miles by the mpg (30). Now you know how many gallons of gasoline will be used by the car. After calculating, you get 16.67. Multiply this by how much it costs per gallon of gasoline, and you get an answer of $35.7.

8 0
3 years ago
George and Riley are selling fruit for a school fundraiser. Customers can buy small boxes of oranges and large boxes of oranges.
worty [1.4K]

The cost of small box of oranges is $7.

The cost of large box of oranges is $13.

<u>Step-by-step explanation:</u>

It is given that,

3 small boxes of oranges and 14 large boxes of oranges for a total of $203.

11 small boxes of oranges and 11 large boxes of oranges for a total of $220.

Let us take,

  • The cost of small box of oranges = x
  • The cost of large box of oranges = y

<u>The system of equations are framed as :</u>

3x + 14y = 203  ---------(1)

11x + 11y = 220  ---------(2)

<u>To solve these equations for x and y values :</u>

Multiply equation (1) by 11 and equation (2) by 3

Subtract eq(2) from eq(1),

 33x + 154y = 2233

- <u>(33x + 33y = 660)  </u>

  <u>        121 y = 1573  </u>

⇒ y = 1573 / 121

⇒ y = 13

∴ The cost of large box of oranges is $13.

Substitute y=13 in the eq(1),

⇒ 3x + 14(13) = 203

⇒ 3x + 182 = 203

⇒ 3x = 203 - 182

⇒ 3x = 21

⇒ x = 21 / 3

⇒ x = 7

∴ The cost of small box of oranges is $7.

<u />

7 0
2 years ago
A serving of ice cream contains 144 calories of fat that is 20% of the calories how many total calories are in a serving of ice
Karo-lina-s [1.5K]

Answer: 2880

Step-by-step explanation: 144*20=2880 calories.

7 0
3 years ago
Other questions:
  • What is the value of arcsin (-0.18)? Use a calculator to determine the answer.
    14·2 answers
  • Mark earned $13.50 mowing lawns on Saturday. On Sunday, he spent $6.95 when he purchased a movie ticket. He needed to borrow mon
    14·2 answers
  • Cole's Cafe offers two kinds of espresso: single-shot and double-shot. Yesterday afternoon, the cafe sold 16 single-shot espress
    15·1 answer
  • How many five-minute segments are in 1 hour?
    12·2 answers
  • A grocery store is selling 12 bananas for $2.40 at this rate what is the cost of 15 bananas
    12·1 answer
  • Sociologists want to determine the probability of exactly 4 out of the next 7 individuals they survey earning over
    6·1 answer
  • In right triangle XYZ, the right angle is located at vertex Y. The length of line segment XY is 12.4 cm. The length of line segm
    9·1 answer
  • Which graph is the graph of f(x)= (x - 1)/(x + 2) ?
    15·1 answer
  • Graph<br> How to put -31/2 , 21/2 on a graph
    7·1 answer
  • people ask me sometimes why can’t you do your homework and I say it’s because I help people with theres and they never help me :
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!