Answer:a+b
Step-by-step explanation:
You can use the variables a and b to solve your equation if you need
Answer:
20%
Step-by-step explanation:
% increase = (final − initial) / initial × 100%
= (30 − 25) / 25 × 100%
= 20%
Answer:For the first one it would be x=35
And the 2nd one would just be x=-1
Step-by-step explanation:
20m per second, because the difference between -50 and 250 is 300, and just divide 300 by 15, because distance/speed.
19) No, 3 should multiply both x and 2. As they, (x+2) are both inside the parentheses. The correct answer should be 3x + 6.
20) No, when it comes to exponents and multiply, exponents is done first before multiply. Therefore, Brett should square 3 first before multiplying it by 2. the correct steps should be
2 * 3^2 + 5
= 2* 9 + 5
=18 + 5
=23
