I need help pls branniest

21√10

Step-by-step explanation:

√3 x 7√30

= 7 √30 x 2

= 7√90

Simplifying 7√90

7√90

= 7 √9 x √10

= 7 x 3 x √10

= 21 x √10

= 21√10

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24