Question

Write an equation of each sentence. Use n to represent the unknown number. You can use the back page for your solution. (2 points each) 11. Six increased by a number is twenty. 12. A number decreased by seven is four. 13. The sum of two consecutive numbers is thirty-one. 14. The sum of twice a number and two is thirteen. 15. One less than a number is eighteen. 16. The square of a number increased by four is twice the number. 17. Twice a number is one-half. 18. The product of a number and its half is eighteen. 19. The average of a number and ninety is seventy. 20. Two more than a number is twelve.
PLEASE HELP Me​

Answer 1

Answer:

• 11. 6 + n = 20
• 12. n - 7 = 20
• 13. n + n + 1 = 31
• 14. 2n + 2 = 13
• 15. n - 1 = 18
• 16. n² + 4 = 2x
• 17. 2n = 1/2
• 18. n²/2 = 18
• 19. n/2 + 90/2 = 70
• 20. 2 + n = 12

Hoped this helped.

$-BrainaicUser1357-$

Answer 2

Let the number be x

#11

$\\ \sf\longmapsto x+6=20$

#12

$\\ \sf\longmapsto x-7=4$

#13

$\\ \sf\longmapsto x(x+1)=31$

#14

$\\ \sf\longmapsto 2x+2=13$

#15

$\\ \sf\longmapsto x-1=18$

#16

$\\ \sf\longmapsto x^2+4=17$

#17

$\\ \sf\longmapsto x^2/2=18$

#18

$\\ \sf\longmapsto x+90/2=70$