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Grace [21]
3 years ago
10

Help Por favor! Will mark brainliest!

Mathematics
1 answer:
postnew [5]3 years ago
8 0

Answer: An adult’s ticket costs $9 while a children’s ticket costs $5.

Step-by-step explanation:

1). 2x + 3y = 33

2). 5x + 2y = 55

3). I’m going to use substitution.

Isolate a variable (x):

2x + 3y = 33

2x = -3y + 33

X = (-3y + 33)/2

X = -3/2y + 33/2

Substitute and solve for y:

5x + 2y = 55

5(-3/2y + 33/2) + 2y = 55

-15/2y + 165/2 + 2y = 55

-11/2y = -55/2

Y = 5 <— children’s ticket.

Solve for x:

2x + 3y = 33

2x + 3(5) = 33

2x + 15 = 33

2x = 18

X = 9 <— adult’s ticket.

Check:

5x + 2y = 55

5(9) + 2(5) = 55

45 + 10 = 55

55 = 55

2x + 3y = 33

2(9) + 3(5) = 33

18 + 15 = 33

33 = 33

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-3x =21<br> 1/3x =6<br> -1/2x =-7
Kitty [74]
-3x = 21
Divide -3 from both sides and you get x = -7

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The sum of 4 times a number and 7 is 19
Klio2033 [76]
So the sum of 4 times a number (4 times x or 4x) and 7 (+7) is (=) 19 (19)

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3 years ago
Read 2 more answers
Find the constant of variation for the relation and use it to write and solve the equation.
Ksenya-84 [330]

Answer:

When x = 1 and z = 4,   y=\frac{80}{9}

Step-by-step explanation:

The variation described in the problem can be written using a constant of proportionality "b" as:

y=b\,\,x\,\,z^2

The other piece of information is that when x = 5 and z = 1, then y gives 25/9. So we use this info to find the constant "b":

y=b\,\,x\,\,z^2\\\frac{25}{9} =b\,\,(5)\,\,(1)^2\\\frac{25}{9} =b\,\,(5)\\b=\frac{5}{9}

Knowing this constant, we can find the value of y when x=1 and z=4 as:

y=b\,\,x\,\,z^2\\y=\frac{5}{9} \,\,x\,\,z^2\\y=\frac{5}{9} \,\,(1)\,\,(4)^2\\y=\frac{5*16}{9}\\y=\frac{80}{9}

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3 years ago
Binomio al cubo <br> (x+2)3​
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3x+6

Step-by-step explanation:

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3x+6

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