3(2a+1)=-5(a+6)
First expand the brackets.
6a+3=-5a-30
Now add 5a to both sides.
11a+3=-30
Then subtract 3 from both sides.
11a=-33
Finally divide both sides by 11.
a=- 33/11
=-3
Triangles ABC and ADE are similar triangles. That means the sides are all scaled by the same factor.
To go from side BC to side DE, you multiply by 1.25. That means 1.25 is your scale factor. Now apply that factor to the bottom side to get your answer.
Side AB is 6. That means side AD is 6 x 1.25 = 7.5. That means x = 7.5 - 6 = 1.5
And whats the rest of the question
Answer:
The answer is 12
Step-by-step explanation:
Multiply 1*3
Add 2 to the number
Change the first number to 5/3
Multiply 3*4
Answer:
19. 188
20. 18
21. 5
21. 4
Step-by-step explanation:
634.58 would round up to 635 and 436.79 would round up to 437.
20. 37.86 would round up to 38 and 19.92 would round up to 20.
21. 14.49 would round to 14 and 8.59 would round up to 9.
22. 7.45 would round down to 7 and 2.93 would round up to 3.
