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MrRissso [65]
3 years ago
7

A zoo train ride costs $5 per adult and $1 per child. On a certain day, the total number of adults (a) and children (c) who took

the ride was 17, and the total money collected was $65. What was the number of children and the number of adults who took the train ride that day, and which pair of equations can be solved to find the numbers?
A.) 5 children and 12 adults
Equation 1: a + c = 17
Equation 2: 5a − c = 65

B.) 12 children and 5 adults
Equation 1: a + c = 17
Equation 2: 5a + c = 65

C.) 12 children and 5 adults
Equation 1: a + c = 17
Equation 2: 5a − c = 65

D.) 5 children and 12 adults
Equation 1: a + c = 17
Equation 2: 5a + c = 65
Mathematics
2 answers:
Aneli [31]3 years ago
8 0
The answer is D. Because you need to add not subtract.
stiks02 [169]3 years ago
4 0
D: 5 Children and 12 Adults 
Equation 1:a + c= 17
Equation 2: 5a + c = 65

Have a nice day!
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nata0808 [166]

Answer:

y = -¼│x − 5│+ 3

Step-by-step explanation:

y = a│x − h│+ k

(h, k) is the vertex of the absolute value graph.  In this case, it's (5, 3).

y = a│x − 5│+ 3

One point on the graph is (1, 2).  Plug in to find the value of a.

2 = a│1 − 5│+ 3

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y = -¼│x − 5│+ 3

4 0
3 years ago
A bag contains green marbles and blue marbles, 55 in total. The number of green marbles is 7 more than 5 times the number of blu
MrRissso [65]

Answer:

Step-by-step explanation:

Total marbles in bag= 55

Given that

The number of green marbles is 7 more than 5 times the number of blue marbles.

Let green marble be x

And blue marble be y

Therefore,

Green=seven more than 5 times blue

Green=7+5timesblue

x=7+5y. Equation 1

Also the sum of the marbles is 55

x+y=55. Equation 2

Substitute equation 1 into 2

7+5y+y=55

7+6y=55

6y=55-7

6y=48

y=48/6

y=8

From equation 2

x+y=55

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x=55-8

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7 0
4 years ago
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Answer:

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Step-by-step explanation:

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x = \frac{-(-2) +\sqrt{(-2)^{2} - 4(1)(-15)}}{2(1)}  or  \frac{-(-2) -\sqrt{(-2)^{2} - 4(1)(-15)}}{2(1)}

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b) x^{2} + 8x - 10 =0

x = \frac{-(8) +\sqrt{(8)^{2} - 4(1)(-10)}}{2(1)}  or  \frac{-(8) -\sqrt{(8)^{2} - 4(1)(-10)}}{2(1)}

x = -4 + \sqrt{26} or -4 - \sqrt{26}

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3 years ago
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