That group of acronyms refers to basic knowledge () a.abc b.bbc c.voa

RELATED INFORMATIONS

1. After adding the same number to the numerator denominator of 9 / 17, the number of fractions equals 3 / 4. What is the number added?
2. Given a + B = 3 and A-B = - 1, what is the sum of the square of a and the square of B? Thank you very much
3. As shown in the figure, ∠ ACB = 90 ° in △ ABC, ad bisects ∠ BAC, de ⊥ AB in E
4. Triangle ABC, three sides ABC, 2b = a + C to find the value range of angle B
5. The area of a rectangular desktop is 1 square meter. The side length of a square desktop is 910 meters. How many square meters more is the area of a rectangular desktop than that of a square?
6. If the median line of trapezoid is 3 and the height is 2, the area of trapezoid is 2
7. Schematic diagram of knife lever principle
8. Distribution and characteristics of climate types in China
9. The positive scale function y = - 1 / 3x must pass through the point? And its image passes through the? Quadrant
10. When x = - 3, y = - 1, which quadrant does the image pass through In addition to the title, there is another question: Point (1 / 2,1). (fill in "on" or "not on") line y = 2x
11. In △ ABC, BC = 14, ab = 15. It is known that the area of △ ABC is 84, and the length of AC is obtained What's inside? I won't draw any pictures,
12. In the triangle ABC, BC = a, AC = C, and a = 45 degrees, C = 30 degrees, C = 10cm, find a, B and B!
13. Find the range of function y = sin (2x + π / 3), X ∈ (- π / 6, π)
14. The image of the function f (x) = | x + 1 | + | x-a | (x ∈ R, a is a constant) is symmetric about the y-axis The image of the function f (x) = ┃ x + 1 ┃ + ┃ x-a ┃ (x ∈ R, a is a constant) is symmetric about the Y axis. (1) find the value of a (2) Let G (x) = f (x-t) - f (x + T), judge the parity of G (x), and give the proof
15. If the absolute value of a = 3, the absolute value of B = 5, and a is different from B, then the absolute value of (a-b) =?
16. Little careless miscalculated 17 * (M + 3 / 10) as 17 * m + 3 / 10. What is the difference between his calculation and the correct answer
17. How to calculate 100 * 7.9 + 184 * 2.1 + 84 * 2.9
18. Find the slope of the straight line 3x + 4y-5 = 0 and its intercept (process) on x-axis and y-axis
19. Given that point a (a-2,2b + 1) is a point in Cartesian coordinate system, its symmetric point about origin is B (- 2, - 5), try to find the arithmetic square root of ab The process of calculation
20. It is known that there are only six integer solutions to the inequality system X − a ＞ 03 − 2x ＞ 0, then the value range of a is () A. （-∞，-4）B. [-5，-4）C. （-5，+∞）D. (−5，−32)