Simplify, correct to three significant figures, (27.63)2 - (12.37)2
614
612
611
610
Correct answer is D
(27.63)2 - (12.37)2
= (27.63 + 12.37)(27.63 - 12.37)
= 40 x 15.26
= 610
y = 19
y = -19
y = -29
y = 29
Correct answer is B
y+12−2y−13 = 41
- 3(y+1)−2(2y−1)6=41
3y + 3 - 4y + 2 = 24
- y + 5 = 24
- y = 24 - 5 = 19
y = - 19
52
25
-25
-52
Correct answer is A
(0.064)−13
= (641000)−13
= 3√100064
= 104
= 52
Express, correct to three significant figures, 0.003597.
0.359
0.004
0.00360
0.00359
Correct answer is C
0,00 3597 = 0.00360 to 3 s.f
Find the non-zero positive value of x which satisfies the equation
[x101x101x] = 0
2
√3
rong>
1
Correct answer is C
No explanation has been provided for this answer.