Whenever a number is beside a parenthesis without a sign it means multiplication. So you would use PEMDAS work in parenthesis then exponents, multiplication (from left to right) addition and subtraction (from left to right). so you would add 20+3 and get 23 then multiply that by -5 to get -115 as your answer.
Answer:
I did the first one on paper
Step-by-step explanation:
i also sent one page of my personal notes on right triangle Pythagoerean thereom I hope this helps
5 and 6. square of 5 is 25 and square of 6 is 36. must be between 5 and 6
Answer:
2x in common (slope)
Step-by-step explanation:
similar because they both have a slope of 2
different because the 2nd equation has a y intercept of 3
Answer:
This other side of the triangle is equal to about 11.7 cm
Step-by-step explanation:
In order to find out the third side of the triangle we will just use the Pythagoras Theorem.

Since we know the hypotenuse and we know one of the legs, in order to find the second leg we just substitute the values and solve the equation and so we get...


And so b ≈ 11.66190