Correct each of the following errors by circling the error, describing what is wrong, entering what should be there instead, and entering the correct answer. 1. (3x2)(-2x4) = 3(-2)x2•4 = 6x8 2. 4a2 • 3a5 = (4 + 3)a2 + 5 = 7a7 3. x6 • x • x3 = x6+3 = x9 4. 34 • 23 = 64+3 Using the properties you've learned, complete each equation and solve for the variable. 5. 82 • 8x = 811 6. 57 • 5b = 53 7. x12 • xn = x12 Simplify. 8. (2x2y3)(4xy-2) 9. -4x3(2x2 - 9x) 10. 4y+1 • 41-x 11. 5t-2 • 2t-5 12. (3x)4 13. (6m4)2 14. (x2)5(x3)2 15. (3b-2)2(a2b4)3 16. (2a2b5)-4(b-1a8)6 Simplify. 17. 18. 19. 20. 21. 22.

they are simplified

step-by-step explanation:

if you need just tell me and i will come to the rescue.

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.