Step-by-step explanation:
We are asked to simply (2√5 + 3√2)². Using formula: (a + b)² = a² + b² + 2ab. Let's say 2√5 = a, 3√2 = b. So,
→ (a + b)² = a² + b² + 2ab
→ (2√5 + 3√2)² = (2√5)² + (3√2)² + 2(2√5)(3√2)
We are aware about the fact that root means 1/2 and square of root means 2/2 that is 1. Using this we get:
→ (2√5 + 3√2)² = 4(5) + 9(2) + 2(2√5)(3√2)
Solve the brackets, to do so first put the like terms in one box.
→ (2√5 + 3√2)² = 4(5) + 9(2) + 2(2*3)(√5)(√2)
Solve the rest calculations.
→ (2√5 + 3√2)² = 20 + 18 + 2(6)(√10)
→ (2√5 + 3√2)² = 38 + 12√10
Option (a) (38 + 12√10) is the correct option.
Set it equal to 260, because thats what they all equal. so then do 260-15 because thats the only price we know, 260-15= 245. then do 245/7=35. each bracelet was 35 dollars. to check do 35*7=245 & 245+15 = 260
Answer:
it would be a positive number
Step-by-step explanation:
this is because you cant have a negative number of bikers.
y = 6.14 ft
The height of the ramp is about 6.14 ft.
Answer: 0.27
You can mark me brainliest on the other question you know
Step-by-step explanation:
