Match the words 1-6 and A-F. Write down six combinations of numbers and letters with a comma (,).
Example answer: 1A, 2B, 3C, 4D, 5E, 6F
1. music A. album
2. musical B. instruments
3. sound C. charts
4. powerful D. tunes
5. latest E. voice
6. catchy F. effects
log(3x - 11) + log(x - 27) = 3
log[(3x - 11)(x - 27)] = 3
(3x - 11)(x - 27) > 0 <=> 3x^2 - 92x + 297 > 0
1. 3x - 11 > 0 => x > 11/3 => x > 27
x - 27 > 0 => x > 27
2. 3x - 11 < 0 => x < 11/3
x - 27 < 0
=>
одз x ∈(-∞; 11/3) & (27; +∞)
т.к. основание не указанно и написано log делаю вывод, что основание 10
3x^2 - 92x + 297 = 1000
3x^2 - 92x - 703 = 0
D = 92^2 + 4*3*703 = 16900 = 130^2
x1 = (92 - 130) / 6 = -19/3 оба икса подходят под одз
x2 = (92 + 130) / 6 = 37
1. Our clothes are washed by my mother on Saturdays.
2. The blackboard will be cleaned during the break by the pupil on duty.
3. Nice pictures were painted by Vasnetsov.
4. The radio is listened to by Mr Bell in the evenings.
5. Tests in English are regularly taken by us.
6. My relatives will be visited by me next week.
7. Helen's classmates’ photos are collected by her for her new album.
8. The theater was built in 1970.
9. The car will be fixed tomorrow by the mechanic.
10. A nice present was given by me to my friend on his birthday