Answer:
width = x - 5
Step-by-step explanation:
x² - 25 = x + 5 × width
(x + 5)(x - 5) = x + 5 × width
x - 5 = width
width = x - 5
Step-by-step explanation:
Taking value of x= 4
16. 4 + 8 = <u>12</u>
17. 24 ÷ 4 = <u>6</u>
18. 3(4+4) = 3 × 8 = <u>24</u>
19. 5 × 4 = <u>20</u>
20. 30 - (5 × 4) = 30 - 20 = <u>10</u>
21.( 2 × 4 )+ 5 = 8 + 5 = <u>13</u>
22. 4 + 1 = <u>5</u>
23. 25 × 4 = <u>100</u>
24. 60 × 4 = <u>240</u>
25. (25×4) + 10 = 100 + 10 = <u>110</u>
The answer is B because x= the amount before tax and the coupon, 5 is how much is being taken off with the coupon, and 1.08 is the sales tax.
Answer:
angles are 48°, 48°, 84°
Step-by-step explanation:
ratio of angles = 4 : 4 : 7 = 4x : 4x : 7x ( x is a multiplier )
the sum of the 3 angles = 180 , then
4x + 4x + 7x = 180 , that is
15x = 180 ( divide both sides by 15 )
x = 12
the student made the error of assuming x = 12 was the size of the 2 equal angles.
the correct angles are
4x = 4 × 12 = 48°
4x = 4 × 12 = 48°
7x = 7 × 12 = 84°
Answer:
r =.3 is wrong for 2x = -6. you divide -6/2 which = -3 so r = -3
