Use the Pythagorean theorem
a^2 + b^2 = c^2
a^2 + 15^2 = 25^2
a^2 + 225 = 625
a^2 = 400
a = 20
Answer: 20 cm
Hope this helps!!
/////////////////////////////////////////////////////////////////////////////////////////////////////////////
Answer:
Gross Annual Income: $26,520
Step-by-step explanation:
Gross annual income is the amount of money made without any taxes or deductions subtracted from the total. If Brad earns $12.75 per hour and works 40 hours per week, we can first find his weekly income by multiplying the rate by the number of hours per week:
$12.75 x 40 = $510.00
Since Brad earns $510 per week and there are 52 weeks in one year, we can find his gross annual income again by multiply the weekly rate ($510) by the number of weeks in a year (52):
$510 x 52 = $26,520
-10x -120-11x
combine like terms so -10-11= -21x-120
Answer:

Step-by-step explanation:
<em>the sum means add</em>

the denominators stay the same, you just add the top two numbers.
(if you need to simplify it, it can be simplified to
)
Hope this makes sense! If you have further questions, let me know!
- profparis