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Contact [7]
3 years ago
9

Evaluate the expression 3x for x = 7

Mathematics
2 answers:
zavuch27 [327]3 years ago
8 0

Answer:

3(7)

the answer is 21

Step-by-step explanation:

slava [35]3 years ago
8 0

Answer:

the answer is 21.

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A ski rental store rents a pair of skis for $44 a day and a snowboard for $58 a day. Yesterday, the store made $2,232 on ski and
Katen [24]

First, let the number of skis rented by x and the number of snowboards rented by y. We can then assemble the first equation from the amount of money made from the rentals.


44x + 58y = 2232


The second equation can come from the fact that 9 more skis were rented than snowboards.


y = x - 9


Therefore our system is:


44x + 58y = 2232

y = x - 9

3 0
4 years ago
To rent a certain meeting room, a college charges a reservation fee of $19 and an additional fee of $4 per hour. The chemistry c
prisoha [69]

Answer:

t = 5

Step-by-step explanation:

  1. 19 + 4t = 39
  2. 4t = 20 Subtract 19 from 39
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X^2 + 2xy + -x + y^2 + -y + -12
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4 years ago
Please someone can help me with #13, 15 and 16 Thanks.
ladessa [460]
What's the question though?
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3 years ago
Jamal planted 53 fewer flowers than Heidi. Write an expression to show how many flowers Heidi planted.
Sergeu [11.5K]

Answer:

y = x + 53

Step-by-step explanation:

Let x be the number of flowers Jamal planted and y the number of flowers Heidi planted.

Jamal planted 53 fewer flowers than Heidi:

x = y - 53

Isolate the y.

x + 53 = y (Change the - sign to + sign when switching from different sides of an equation)

y = x + 53

6 0
3 years ago
Read 2 more answers
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