Answer:
b = 12
Step-by-step explanation:
The mistake Megan has made is that she has squared the lengths and then added it instead of taking away the squared length's. The method she used was to work out the hypotenuse, so the correct method would be as follows:
a² + b² = c²
→ Substitute in the values
5² + b² = 13²
→ Simplify the equation
25 + b² = 169
→ Minus 25 from both sides to isolate b²
b² = 144
→ Square root both sides to find the value of b
b = 12
Answer:
c and d
Step-by-step explanation:
those are the only ones with two terms being added
That is incorrect. Three tenths multiplied by one hundred does not equal three hundred thousandths. The correct answer is 30. Watch your multiplication carefully, and place the decimal points where they're supposed to be.
Hope that helped.
Answer:
3 - 7j is the answer
Step-by-step explanation:
-5j + -2j + 3
|_______|
-7j + 3 [or vice versa, like in the above answer]