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Nuetrik [128]
3 years ago
12

Evaluate each using the values given. 7) 3 - x + x + y; use x = 4, and y=-1

Mathematics
1 answer:
kkurt [141]3 years ago
4 0

Answer:

2

Step-by-step explanation:

3-4+4+(-1) (-4+4=0)

=3-1

=2

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29. A DVD player has a list price of $120. The
kvv77 [185]

Answer:

$90

Step-by-step explanation:

First the given is the listed price of DVD which is 120 dollars.

Now we need to find out what the price will be after discount of 25%

To do this we will have to convert the percentage to decimal by moving decimal 2 place left and removing percentage sign which will become 0.25.

Then we multiply  by the listed price which is 120

so 120*0.25=30

so we subtract 30 by original price cause that is the discount off we are receiving

120-30=90

so 90 will be the sale price after 25% discount.

8 0
3 years ago
A sports team came to town. the stadium filled all 10,000 seats at two-level pricing. level 1 tickets are $50 each, and level 2
marissa [1.9K]

x represents the number of tickets of level 1 and y represents the number of tickets of level 2 in the system given that there are 10,000 seats, level 1 tickets are $50 each, and level 2 tickets are $150 each and equation representing the situation:x + y = 10,000, 50x + 150y = 75,000. This can be obtained by understanding the question and observing the equations.

<h3>What do the x and y represent in the system?</h3>

Given that total number of seats is 10,000 and there are two levels pricing.

Thus by observing the equation, x + y = 10,000,

10,000 is the sum of 2 variable which obviously will be the number of tickets in level 1 and number of tickets in level 2.

Since there are two level pricing,

50x + 150y = 75,000 represent the addition of total cost of tickets of level 1 and 2.

Hence x represents the number of tickets of level 1 and y represents the number of tickets of level 2 in the system given that there are 10,000 seats, level 1 tickets are $50 each, and level 2 tickets are $150 each and equation representing the situation:x + y = 10,000, 50x + 150y = 75,000.

Learn more about algebraic equations here:

brainly.com/question/14737296

#SPJ4

3 0
2 years ago
Help don't get any of them. please explain
hammer [34]
You really just have to round the numbers. Its super simple what number would round to the number that they are saying they are?
8 0
3 years ago
Read 2 more answers
Find the output, y, when the input, x, is 3.<br><br> Y=-5x+13
Alexeev081 [22]

Answer:

y = -2

Step-by-step explanation:

y = -5x + 13

x = 3

y = -5(3) + 13

y = -15 + 13

y = -2

4 0
3 years ago
Read 2 more answers
What pair of factors of -45 has a<br> sum of 4?
damaskus [11]

Answer:

9 and -5

Step-by-step explanation:

9*-5=-45

9+-5=4

5 0
3 years ago
Read 2 more answers
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