4 years ago

The local high school is having a talent show.

1 answer:

7 0

5c + 3 a =25 c is the cost of children ticket and a is the cost for adult tickets.

4c +4a =28

Now multiply first equation by 4 and the second equation by 5

20c +12a =100
20c +20a = 140

Now subtract equation 2 from 1 we have -8a =-40 a = 5
Now substitute the value of a in equation 1 5c =25-15 c= 10/5 =2

children's ticket cost $2

You might be interested in

Find the value of Q in the following system so that the system to the solution is {(x,y) : x-3y=4}

Crank

Answer:

Step-by-step explanation:

7 0

3 years ago

How many times smaller is 2 × 10^-10 than 4 × 10^-5

natta225 [31]

Answer:

200,000

Step-by-step explanation:

To find how many times smaller is smaller number than greater number, divide greater number by smaller number.

Greater number $=4\times 10^{-5}$

Smaller number $=2\times 10^{-10}$

Then

$\dfrac{\text{Greater number}}{\text{Smaller number}}\\ \\=\dfrac{4\times 10^{-5}}{2\times 10^{-10}}\\ \\=\dfrac{4}{2}\times \dfrac{10^{-5}}{10^{-10}}\\ \\=2\times \dfrac{1}{10^{-5}}\\ \\=2\times 10^5\\ \\=2\times 100,000\\ \\=200,000$