Mathematics, 14.11.2019 23:31, lakinbacon4

Brainliest answer gets the mark. 10 pts. the torres family and the ross family each used their sprinklers last summer. the torres family's sprinkler was used for 30 hours. the ross family's sprinkler was used for 20 hours. there was a combined total output of 850 l of water. what was the water output rate for each sprinkler if the sum of the two rates was 35 l per hour?

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answered: tristenr5

The Torres family's output rate is 20 L per hour and

the Ross family's output rate is 15 L per hour

Step-by-step explanation:

The Torres family and the Ross family each used their sprinklers last summer.

Let x = the Torres family's sprinkler output rate.

Let y = the Ross family's sprinkler output rate.

The Torres family's sprinkler was used for 30 hours. The Ross family's sprinkler was used for 20 hours. This means that both family's sprinklers were used for ( 30x + 20y ) hours.

There was a combined total output of 850 L of water. Therefore,

30x + 20y = 850 - - - - - - - - - 1

The sum of the two rates was 35 L per hour. This means

x + y = 35

x = 35 - y

Put x = 35-y in equation 1. It becomes

30(35-y) + 20y = 850

1050 - 30y + 20y = 850

-30y + 20y = 850 - 1050

-10y = -200

y = 200/10 = 20 L per hour

Put y = 20 in y = 35-x

y = 35 - 20 = 15

answered: Guest

step-by-step explanation:

a. since the profit made in 2012 is equal to the profit made in 2014, the profit is symmetric about the line y = 120,000.

step-by-step explanation:

given that megan owns a clothing boutique.

the profits of 2010, 11, are recorded and shown as follows:

years since 2010 0 1 2 3 4 5

profits made in 1000's 39 84 111 120 111 84

we find that profit gradually increases form 2010 to 2013 upto 120, then starts decreasing.

the profits for 2012 and 2014 are the same while that of 2011 and 2015 are also the same.

this shows that there is symmetry about the line profit = 120000

hence answer is:

a. since the profit made in 2012 is equal to the profit made in 2014, the profit is symmetric about the line y = 120,000.

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Brainliest answer gets the mark. 10 pts. the torres family and the ross family each used their sprin...