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How to divide 6552 by 56?
6552/56=（5600+560+392）/56
=100+10+7
=117
The area of a trapezoid is 56 square decimeters. Its height and bottom are 8 decimeters. How many decimeters is its top and bottom?
56×2 ÷8 - 8
= 14 - 8
=6 decimeters top and bottom length
The area of a trapezoid is 3.3m2. It is known that the upper bottom of the trapezoid is 1.6m and the height is 1.5m. What is the lower bottom of the trapezoid?
The bottom of this trapezoid is x m (1.6 + x) × 1.5 △ 2 = 3.3 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 2.4 + 1.5x = 3.3 × 2 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 2.4 + 1.5x = 6.6 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp
The area of a trapezoid is 66 square meters, the bottom of the trapezoid is 14 meters, and the height is 6 meters. How many meters is the top of the trapezoid?
Upper bottom = 2S / height lower bottom = 2 * 66 / 6-14 = 8M
It is known that the circumference of isosceles △ ABC is 10. If the waist length is x, then the value range of X is______ ．
According to the meaning of the question: 10-2x-x ＜ x ＜ 10-2x + X, the solution is 52 ＜ x ＜ 5
If the least common multiple of natural numbers a and B is 140 and the greatest common divisor is 5, then the maximum value of a + B is 140______ ．
According to the analysis, one of a and B is 140, and the other is 5, so the maximum value of a + B is 5 + 140 = 145, so the answer is 145
If the slope of a straight line is a, then its slope is Tana?
If a = 90, then the slope is Tana
It is correct to say that if the inclination angle of a straight line is a, then its slope is Tana or does not exist
Mother, is, your, this
Is this your mother?
When the value of the parabola y = x ^ 2-3kx + 2K + 4K is known, the parabola is symmetric about the Y axis
Why does the parabola pass through the origin when k value
Analysis: (1) if the parabola is symmetric about the Y axis, then the coefficient of the first term is 0, that is - 3K = 0, and K = 0
(2) To make the parabola cross the origin, the constant coefficient is 0, that is, 2K + 4 = 0, and K = - 2
(A-1) ² + B & #178; + 4B + 4 = 0, find the value of ab
(a-1)²+b²+4b+4=0
(a-1)²+（b＋2）²=0
therefore
(a-1)²-0,（b＋2）²=0
a-1=0,b＋2=0
a=1,b=-2
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- 9. One half minus one sixth minus one twelfth. What's one fifty-six Quick. There's a process. There's a formula Better have an explanation 1. 1 / 2 - 1 / 6 - 1 / 12 - 1 / 20 - 1 / 30 - 1 / 42 - 1 / 56 1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 +. + 1 / 72 + 1 / 9 11 × 13 / 1 + 13 × 15 / 1 + 15 × 17 / 1 + 17 × 19 / 1 + 19 × 21 / 1 4. (1-half) × (1-third) × (1-quarter) ×. (1-one hundredth) 5. (1 + 2 / 1 + 3 / 1 + 4 / 1) × (2 / 1 + 3 / 1 + 4 / 1 + 5 / 1) × (1 + 2 / 1 + 3 / 1 + 4 / 1 + 5 / 1) × (2 / 1 + 3 / 1 + 4 / 1) seek
- 10. 88,24,56,40,48, () 46a 38 B 40 C 42 d 44 () 11,9,9,8,7,5,6a 10 b 11 C 12 d 13
- 11. Calculation of 36 ° 27 ′ 38 ″ + 133 ° 41 ′ 54 ″
- 12. Calculation: (1) 36 ° 27'38 '' + 133 ° 41'54 '' = () (2) 100 ° - 37 ° 59'45 '' = () (3) 3 ° 23'50 '' × 5 + () （4）73°31'÷4=（） The third question is (3) 3 ° 23'50 '' × 5 = ()
- 13. -5 √ 8 out of 28 * √ 4 out of 3 * √ 56?
- 14. 21 out of 28 is 3 out of 56
- 15. What's 32 times two fifths In fact, I just want to test your computing ability. On the other hand, I want to help "novice" @ XX answer the most comprehensively.
- 16. 18.3 degrees - 26 degrees 34 '=__________________ .
- 17. How many degrees and seconds does 18.3 degrees equal?
- 18. What is 24 / 2 × 12
- 19. There are 600 parts that need to be processed in one day. When the working efficiency is p hours per person per day, Q workers are needed. If the working efficiency of each person per day is increased by 20%, how many times can the number of workers be reduced?
- 20. Five workers process 735 parts 735 parts were processed by one worker, and 135 parts were processed in two days. It is known that one of the two workers asked for leave for two days. If no one asked for leave in the next few days, how many days would it take to complete the task? The answer is 135 ± (5 × 2-1 × 1) × 5 = 75 (735-135) ± 75 = 8 days Why use 5x2 to explain each step in detail