Question 5. In the xy– plane, give line d with an equation of the form 3x – y + 2 = 0. Which the line as image of d under a reflection symmetry across Oy-axis:
A) 3x + y +2 = 0 B) 3x + y – 2 = 0 C) -3x + y + 2 = 0 D) x + 3y + 2 = 0
Question 6. Given regular tetrahedron SABC with every edge having length 1. Let I be the midpoint of edge AB and M be a point moving on segment AI. Through point M, draw plane (Q) parallel to plane (SIC). The parameter of cross section created by plane (Q) and tetrahedron SABC is
A) B) C) D) unable to calculate
Question 7. How many axes of symmetry does a square have?
A) 1 B) 2 C) 4 D) infinite
Question 8. Carbon-14 has a half- life of 5570 years. When analyzing a wood sample, it was determined 87.5% of radioisotope atoms of Carbon-14 were decayed into atoms. The age of this wood is:
A) 16714 years B) 17000 years C) 16100 years D) 16714 days Question 9. Give a sequential (un) u1 = - 2 un+1 = -2- 1/un, un be equal to A) (1-n)/n B) (n+1)/n C) –(n+1)/n D) –n/(n+1)
Question 10. In the Oxy plane, give (2;-1) and M(-3;2). Of the following coordinates, which does the image of the point M have under a
translation through vector ?
A) (5;3) B) (1;1) C) (-1;1) D) (1;-1)
Question 11. If (ax + 2)(bx + 7) = 15x2 + cx + 4, for all values of x and a + b = 8. Whats is the value of c?
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Question 12.
h |
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Xem toàn bộ 267 trang tài liệu này.
In the spring in the Northern villages, people play swings. When players move regularly, the swing vibrates around the balance point is a vertical equation. If the distance h between the players and the balance point
is measured by h= with (h measured by meters, t measured by seconds). So, what point of time in the first two seconds, players
is furthest from the balance point?
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Question 13. The probability for John to win a computer game is 0.4. How many times does he have to play to win that game with the probability
0.95 at least once?
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Question 14. Given equation . Solve the equation above
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Question 15. The two points M and N in the two cities lie on either side of a large river with two river banks (picture below). Demonstrated how for find a location to build a bridge across the river such that the bridge is perpendicular to the two banks and the distance from M to N is the shortest.
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STOP
PHỤ LỤC 3.8
BẢNG PHẦN TRĂM, TẦN SỐ, TẦN SUẤT,
GIÁ TRỊ TRUNG BÌNH CỦA CÁC ĐÁNH GIÁ VỀ SỰ CẦN THIẾT VÀ TÍNH KHẢ THI CỦA CÁC BIỆN PHÁP
Frequency | Percent | Valid Percent | Cumulative Percent | ||
Valid | Kha | 58 | 41.1 | 42.6 | 42.6 |
Rat | 78 | 55.3 | 57.4 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 | |||
CTGP2 | |||||
Frequency | Percent | Valid Percent | Cumulative Percent | ||
Valid | Kha | 77 | 54.6 | 56.6 | 56.6 |
Rat | 59 | 41.8 | 43.4 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 |
Frequency | Percent | Valid Percent | Cumulative Percent | ||
Valid | Kha | 32 | 22.7 | 23.5 | 23.5 |
Rat | 104 | 73.8 | 76.5 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 |
Frequency | Percent | Valid Percent | Cumulative Percent | |||||
Valid | Khong | 1 | .7 | .7 | .7 | |||
It | 9 | 6.4 | 6.6 | 7.4 | ||||
Kha | 72 | 51.1 | 52.9 | 60.3 | ||||
Rat | 54 | 38.3 | 39.7 | 100.0 | ||||
Total | 136 | 96.5 | 100.0 | |||||
Missing | System | 5 | 3.5 | |||||
Total | 141 | 100.0 | ||||||
CTGP5 | ||||||||
Frequ ency | Percent | Valid Percent | Cumulative Percent | |||||
Valid | It | 1 | .7 | .7 | .7 | |||
Kha | 102 | 72.3 | 75.0 | 75.7 | ||||
Rat | 33 | 23.4 | 24.3 | 100.0 | ||||
Total | 136 | 96.5 | 100.0 | |||||
Missing | System | 5 | 3.5 | |||||
Total | 141 | 100.0 | ||||||
CTGP6 |
Frequ ency | Percent | Valid Percent | Cumulative Percent | ||
Valid | It | 2 | 1.4 | 1.5 | 1.5 |
Kha | 61 | 43.3 | 44.9 | 46.3 | |
Rat | 73 | 51.8 | 53.7 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 | |||
KTGP1 | |||||
Frequ ency | Percent | Valid Percent | Cumulative Percent | ||
Valid | Kha | 62 | 44.0 | 45.6 | 45.6 |
Rat | 74 | 52.5 | 54.4 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 | |||
KTGP2 | |||||
Frequ ency | Percent | Valid Percent | Cumulative Percent | ||
Valid | Kha | 81 | 57.4 | 59.6 | 59.6 |
Rat | 55 | 39.0 | 40.4 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 | |||
KTGP3 | |||||
Frequ ency | Percent | Valid Percent | Cumulative Percent | ||
Valid | Kha | 45 | 31.9 | 33.1 | 33.1 |
Rat | 91 | 64.5 | 66.9 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 |
Frequency | Percent | Valid Percent | Cumulative Percent | ||
Valid | It | 16 | 11.3 | 11.8 | 11.8 |
Kha | 69 | 48.9 | 50.7 | 62.5 | |
Rat | 51 | 36.2 | 37.5 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 | |||
KTGP5 | |||||
Frequency | Percent | Valid Percent | Cumulative Percent | ||
Valid | It | 1 | .7 | .7 | .7 |
Kha | 103 | 73.0 | 75.7 | 76.5 | |
Rat | 32 | 22.7 | 23.5 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 |
Frequency | Percent | Valid Percent | Cumulative Percent | ||
Valid | It | 6 | 4.3 | 4.4 | 4.4 |
Kha | 60 | 42.6 | 44.1 | 48.5 | |
Rat | 70 | 49.6 | 51.5 | 100.0 | |
Total | 136 | 96.5 | 100.0 | ||
Missing | System | 5 | 3.5 | ||
Total | 141 | 100.0 |
Statistics
CTGP1 | CTGP2 | CTGP3 | CTGP4 | CTGP5 | CTGP6 | ||
N | Valid | 136 | 136 | 136 | 136 | 136 | 136 |
Missing | 5 | 5 | 5 | 5 | 5 | 5 | |
Mean | 3.57 | 3.43 | 3.76 | 3.32 | 3.24 | 3.52 | |
Mode | 4 | 3 | 4 | 3 | 3 | 4 | |
Std. Deviation | .496 | .497 | .426 | .629 | .443 | .530 |
Statistics
KTGP1 | KTGP2 | KTGP3 | KTGP4 | KTGP5 | KTGP6 | ||
N | Valid | 136 | 136 | 136 | 136 | 136 | 136 |
Missing | 5 | 5 | 5 | 5 | 5 | 5 | |
Mean | 3.54 | 3.40 | 3.67 | 3.26 | 3.23 | 3.47 | |
Mode | 4 | 3 | 4 | 3 | 3 | 4 | |
Std. Deviation | .500 | .493 | .472 | .655 | .438 | .583 |
PHỤ LỤC 3.9
BẢNG KIỂM ĐỊNH ONE- WAY ANOVA
VỀ SỰ CẦN THIẾT VÀ TÍNH KHẢ THI CỦA CÁC BIỆN PHÁP
1. Sự cần thiết
Test of Homogeneity of Variances
Levene Statistic | df1 | df2 | Sig. | |
CTGP1 | 3.573 | 4 | 131 | .008 |
CTGP2 | 2.852 | 4 | 131 | .026 |
CTGP3 | 1.491 | 4 | 131 | .209 |
CTGP4 | 3.587 | 4 | 131 | .008 |
CTGP5 | 4.779 | 4 | 131 | .001 |
CTGP6 | 7.577 | 4 | 131 | .000 |
ANOVA
Sum of Squares | df | Mean Square | F | Sig. | ||
CTGP1 | Between Groups | .813 | 4 | .203 | .821 | .514 |
Within Groups | 32.451 | 131 | .248 | |||
Total | 33.265 | 135 | ||||
CTGP2 | Between Groups | .770 | 4 | .193 | .773 | .545 |
Within Groups | 32.634 | 131 | .249 | |||
Total | 33.404 | 135 | ||||
CTGP3 | Between Groups | .248 | 4 | .062 | .335 | .854 |
Within Groups | 24.223 | 131 | .185 | |||
Total | 24.471 | 135 | ||||
CTGP4 | Between Groups | 6.088 | 4 | 1.522 | 4.213 | .003 |
Within Groups | 47.317 | 131 | .361 | |||
Total | 53.404 | 135 | ||||
CTGP5 | Between Groups | 3.684 | 4 | .921 | 5.296 | .001 |
Within Groups | 22.786 | 131 | .174 | |||
Total | 26.471 | 135 | ||||
CTGP6 | Between Groups | 3.748 | 4 | .937 | 3.590 | .008 |
Within Groups | 34.186 | 131 | .261 | |||
Total | 37.934 | 135 |
Robust Tests of Equality of Means
Statistica | df1 | df2 | Sig. | ||
CTGP1 | Welch | .816 | 4 | 27.607 | .526 |
CTGP2 | Welch | .743 | 4 | 27.584 | .571 |
CTGP3 | Welch | .336 | 4 | 27.957 | .851 |
CTGP4 | Welch | 11.034 | 4 | 30.304 | .000 |
CTGP5 | Welch | 4.443 | 4 | 27.738 | .007 |
CTGP6 | Welch | 5.800 | 4 | 28.513 | .002 |
a. Asymptotically F distributed.