CORRECT ANSWER WILL GIVE BRAINLIEST! These ratios are all equivalent to 7:15.
Fill in the gaps.
1)14:__
2)24.5:__
3)3.5:__
4)1:__
5)__:1
6)__:12
7)__:20

1) 14 : 30

2) 24.5 : 52.5

3) 3.5 : 7.5

4) 1 : 2.14

5) 0.47 : 1

6) 5.6 : 12

7) 9.33 : 20

Step-by-step explanation:

To get the answer for any gaps on the left e.g. 14 : __

divide the number that you have (14) by the number you were given (7).

And multiply your answer (2) by the number on the side you want to get (15), whatever you get from that (30) is you final answer.

To get the answer for any gaps on the right e.g. __ : 12

divide the number that you have (12) by the number you were given (15).

12÷15

And multiply your answer (0.8) by the number on the side you want to get (7)

0.8×7

whatever you get from that (30) is you final answer.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

answer: 298143

step-by-step explanation: