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Elanso [62]
3 years ago
10

Y varies directly as the square x and inversely as z if y=12 when x=2 and z=7 find y when x=3 and z=9

Mathematics
1 answer:
mel-nik [20]3 years ago
8 0

Answer:

Step-by-step explanation:

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The Baltimore Aquarium requires 3 adult chaperones for every 15 students on a field trip. How many chaperones would be needed fo
Elden [556K]
There would need to be 25 adult chaperones. 

The ratio would be 3 adults to every 15 kids. 3:15
To find how many adults are needed for 125 kids you would simply divide.
125/5=25

Hope this helps! :)
6 0
4 years ago
Can someone please help me with this
UNO [17]
Ok so we know that student tickets cost $5, and adult tickets cost $8. We also know that the total no. of tickets sold was 150.

Let's make the amount of student tickets sold be S, and the no. of adult tickets sold be A.

We know that tickets sales amounted to $1,020, so:
8A + 5S = 1020
And:
A + S = 150. Multiply this by 5;
5A + 5S = 750

When you subtract the two equations;
(8A+5S) - (5A+5S) = 1020-750
So 3A = 270
A = 90
So 90 adult tickets were sold.
S = 150 - 90
= 60
So 60 student tickets were sold (although you don't need this as part of your answer)

Hope this helped
4 0
4 years ago
Scott walks to and from school each day. Each round trip is 3 kilometers long.
natka813 [3]

The equation that shows the relationship between the number of round trips, x and the number of kilometers, y Scott walked is y = 3x

Each round trip = 3 km

x = number of rounds

y = number of km he has walked in all.

1 rounds  = 3 km

Therefore,

x rounds = 3x km

Each round of trip covers 3km. This means for each round of trip a distance of 3km is covered. The total distance or number of kilometers is represented with y.

The equation to show the relationship between x(number of rounds) and y (number of km) can be represented below

  • y = 3x

read more: brainly.com/question/14197865?referrer=searchResults

8 0
3 years ago
Which expression is equal to<br> -18b^-4
victus00 [196]

Answer:

-  \frac{18}{ {b}^{4} }

Step-by-step explanation:

- 18b {}^{ - 4}

express b^-4 with a positive exponent using:

a {}^{ - n}  =  \frac{1}{ {a}^{n} }

- 18 \frac{1}{ {b}^{4} }

-  \frac{18}{ {b}^{4} }

8 0
3 years ago
Which is the graph of the linear inequality y &lt; 3x + 1?
vitfil [10]

Answer:

Step-by-step explanation:

6 0
3 years ago
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