The product of 3 and the sum of a number and 10 is 42

The number is 4

Step-by-step explanation:

[] Underlined means it is turned into a mathematical statement in the next line

-> Let n be "a number"

The product of 3 and the sum of a number and 10 is 42

The product of 3 and the sum of a number and 10 is 42

The product of 3 and the sum of a number and 10 = 42

The product of 3 and n + 10 = 42

3(n + 10) = 42

[] Now we can solve for n

3(n + 10) = 42

3n + 30 = 42

3n = 12

n = 4

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- Heather

3*(n+10)= 42

Step-by-step explanation

1. Product means the whole thing it multipling
2. The sum of n (a number) and 10 means n+10
3. Put it together and you get 3*(10+42)

4. Parenthesis because the sum is getting multiplied

5. For when it says a number you means you put a variable there.

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