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steposvetlana [31]
3 years ago
9

I need to know math questions to study

Mathematics
1 answer:
malfutka [58]3 years ago
7 0

Answer:

69+69

Step-by-step explanation:

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FASTTTTTTTTT PPPPPPPPPPPPPPLLLLLLLLLLLLLLLLZZZZZZZZZZZZZZZ
Deffense [45]

Answer:

(a) B

(b) $2

Step-by-step explanation:

(a) Let's say the cost of a ticket is t and the cost of popcorn is p. Then we can write the two equations from the table:

12t + 8p = 184

9t + 6p = 138

We need to solve this, so let's use elimination. Multiply the first equation by 3 and the second equation by 4:

3 * (12t + 8p = 184)

4 * (9t + 6p = 138)

We get:

36t + 24p = 552

36t + 24p = 552

Subtract the second from the first:

    36t + 24p = 552

-    36t + 24p = 552

________________

       0 = 0

Since we get down to 0 = 0, which is always true, we know that we cannot determine the cost of each ticket because there is more than one solution (infinitely many, actually). The answer is B.

(b) Our equation from this, if we still use t and p, is:

5t + 4p = 82

Now, just choose any of the two equations from above. Let's just pick 9t + 6p = 138. Now, we have the system:

5t + 4p = 82

9t + 6p = 138

To solve, let's use elimination again. Multiply the first equation by 6 and the second one by 4:

6 * (5t + 4p = 82)

4 * (9t + 6p = 138)

We get:

30t + 24p = 492

36t + 24p = 552

Subtract the second from the first:

    36t + 24p = 552

-    30t + 24p = 492

________________

      6t + 0p = 60

So, t = 60/6 = $10. Plug this back into any of the equations to solve for p:

5t + 4p = 82

5 * 10 + 4p = 82

50 + 4p = 82

4p = 32

p = 32/4 = $8

So the ticket costs 10 - 8 = $2 more dollars than the popcorn.

5 0
3 years ago
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What value of r is the solution of the equation 3/4r = 7/3
Liula [17]
R= 28/9. Hope this helps
4 0
3 years ago
Is 1.403 bigger than 1.4
NISA [10]
Yes.    1.403  is  0.003  more than  1.4 .
5 0
3 years ago
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What's 111111 - 3 + 34. Whoever gets it right, we will do brainliest for brainliest.
kakasveta [241]
What's 111111 - 3 + 34. Whoever gets it right, we will do brainliest for brainliest.


that would 111142
6 0
3 years ago
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One dollar is worth 3 1/2 kruneros. What is the value of 43 3/4 kruneros?
Marina CMI [18]
The value of 43 3/4 is $12.50
4 0
3 years ago
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