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Anit [1.1K]
3 years ago
8

Pls help! The price of an item has dropped to

Mathematics
1 answer:
murzikaleks [220]3 years ago
4 0
The percentage decrease is 60% decrease because it changed by 81 and 81 is 60% of 135
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Group of friends are going to see a movie. The admission cost is $8 per person. The table below represents the number of friends
vagabundo [1.1K]

Answer:

B) (2, 16), (3, 24), (4, 32), (5, 40)

Step-by-step explanation:

1 ticket costs $8. 8 x 2 = 16, so 2 tickets cost $16. 8 x 3 = 24, so 3 tickets cost $24. The same thing goes for 4 tickets, and 5 tickets.

4 0
3 years ago
Read 2 more answers
-2x-9y=-25 -4x-9y=-23 system with elimination
REY [17]
Multiply the first equation by -2. It turns into 4x+18y=50 and the other one stays -4x-9y=-23. Then you "eliminate" the equations by "adding" them. Set it up like this: 
4x+18y=50
      +
-4x-9y=-23
4x-4x= 0. 18y-9y= 9y and 50-23= 27
SO: 9y= 27 and y= 3
And then you plug that in to one equation: 4x +18(3)= 50. 4x= 50-(18*3)
4x= -4, so x=-1.
Plug it back in to check! 
Hope this helps. Happy solving! :)
4 0
3 years ago
Read 2 more answers
Is the point (3, 11) a solution for the linear equation 1/3x + y = 12? Explain.
PtichkaEL [24]

9514 1404 393

Answer:

  yes

Step-by-step explanation:

The point is on the line.

The coordinate values satisfy the equation:

  1/3x + y = 12

  1/3(3) + 11 = 12 . . . substitute for x and y

  1 + 11 = 12 . . . . . . . true

Any point that satisfies the equation is a solution. (3, 11) is a solution.

5 0
3 years ago
A student rides his bike to school with an average velocity of 10 miles per hour. It takes him 12 minutes to get to school. Writ
Dovator [93]

Answer:

The function is d=10t

domain is 0 to 0.2 hour.

range is 0 to 2 miles.

Step-by-step explanation:

Given that,

Average velocity = 10 miles/hour

Time = 12 min = 0.2 hour

We need to write a function that models the student's distance from home

Using formula of distance

d=v\times t

Where, v = velocity

t = time

d = distance

Put the value into the formula

d=10t

This is a function.

We know that,

Domain :

Domain shows the time.

So, domain = 0 to 0.2 hour

Range :

Range shows the distance.

The range at t =0,

Put the value of t in the function

d = 10\times0=0

The range at t =0.2 hour

d = 10\times0=0

d=2\ miles

So. range = 0 to 2 miles

Hence, The function is d=10t

domain is 0 to 0.2 hour

range is 0 to 2 miles

6 0
3 years ago
Bill drove to town hall and back. The trip there took 1.5 hours and 2hrs on trip back. If bill's speed there was 12 mph faster t
kipiarov [429]

Answer:

36 mph.

Step-by-step explanation:

Let x be the distance to the town hall.

Trip there:

speed (s) = distance / time

s = x / 1.5 so x = 1-5s

Trip back:

s - 12 = x / 2 so x = 2s - 24

AS they are both = to x:

1.5s = 2s - 24

0.5s = 24

s = 48.

Average speed on the way back = 48-12 = 36 mph.

3 0
3 years ago
Read 2 more answers
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