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5-3: MathXL for School: Practice & Problem Solving
5.3.PS-10
Question Help
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Swimming Pool On a certain hot summer's day, 429 people

used the public swimming pool. The
daily prices are $1.75 for children and $2.50 for adults. The receipts for admission totaled
$974.25. How many children and how many adults swam at the public pool that day?
There were children at the public pool.

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

i think the correct option is the second option.

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet