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allochka39001 [22]
2 years ago
9

Two families went to a baseball game. The first family bought 5 pretzels and 4 sodas, which totaled $30. The second family bough

t 4 pretzels and 5 sodas, which totaled $33. How much did one soda cost?
Mathematics
1 answer:
Alinara [238K]2 years ago
5 0

The cost of one soda bought by both families is $5.

<h3>What is the total cost of shopping for each family?</h3>

The cost of purchase is the sum of number of items bought and their prices for each family.

Let us assume that x is for number of pretzels bought and y is for number of sodas bought, as a result, the total amount spent by each family and number of items bought are expressed thus:

5x+4y=30.....................(equation 1)

4x+5x=33 .....................(equation 2)

let us multiply equation 1 by 5

let us multiply equation 2 by 4

5*(5x+4y=30)25x+20x=150........(equation 3)

4*(4x+5x=33)16x+20x=132..........(equation 4)

equation 3 minus equation 4 is:

9x=18

x=18/9

x=2

price of pretzels is $2.00

Substitute for x in equation:

24x+5y=33(4*2)+5y=33

8+5y=33

5y=33-8

5y=25

y=25/5

y=5

price of one soda=$5

Find out more about simultaneous equations on:brainly.com/question/6597041

#SPJ1

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stepladder [879]

Answer:

B. <em>Output = Input x 5</em>

Step-by-step explanation:

Given:

Point (0,0)

To find which of the functions given will have the point (0,0) on its graph.

Solution:

In order to check whether a point (x,y) lies on the graph of the function, we plugin the x as the input in the function and y as the output of the function and see if it satisfies the equation.

Plugging in point (0,0) in the functions given:

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Plugging in Output=0 and Input=0

0=0+3

0=3

The above statement can never be true and hence, the function graph  does not have the point (0,0).

B. <em>Output = Input x 5</em>

Plugging in Output=0 and Input=0

0=0\times 5

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The above statement is always true and hence, the function graph does  have the point (0,0).

C. <em>Output = Input - 2</em>

Plugging in Output=0 and Input=0

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The above statement can never be true and hence, the function graph  does not have the point (0,0).

D. <em>Output = Input + 3</em>

Plugging in Output=0 and Input=0

0=0+3

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4 0
3 years ago
40% of an hour in minutes and secs
olga55 [171]

Answer:

<em>40% of an hour </em><em>equals: </em><em>24 minutes </em>

<em>40% of an hour also </em><em>equals: </em><em>1440 seconds</em>

<u>Skills needed: Time Units Conversion</u>

Step-by-step explanation:

1) First, we need to understand how to convert between hours, minutes, and seconds.

There are 60 minutes in 1 hour ==> 1 hour = 60 minutes

There are 60 seconds in 1 minute ==> 1 minute = 60 seconds

- This means that there are 3600 seconds in 1 hour (60*60=3600)

- This also means that there are 60 minutes in 1 hour

2) We are trying to find how many minutes (or seconds) 40% of an hour is.

---> When converted to decimal, 40\%=\frac{40}{100}=0.4

40% of an hour = 0.4 hours

Since there are 60 minutes in an hour, there are 60*0.4 minutes in 0.4 hours. 60*0.4=24 so, 24 minutes in 0.4 hours.

Since there are 3600 seconds in an hour, there are 3600*0.4 seconds in 0.4 hours. 3600*0.4=1440 so, 1440 seconds in 0.4 hours.

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Scilla [17]
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Decimals
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