Solve equation 4.4x-24 = 68 and write out the calculation process

Solve equation 4.4x-24 = 68 and write out the calculation process


4.4x=68+24
4.4x=92
x=92/4.4
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Solve the equation 4x-x = 24


4x-x=24
3x=24
x=24÷3
x=8



How many jin equals one kilogram?


2 kg



Two tons of apples were delivered to the fruit shop. Two fifths of the total apples were sold on the first day, and two fifths of the apples were sold on the second day. How many tons?


2×(1-2/5)-2/5
=6/5-2/5
=3 / 5 tons



It takes 15 hours for a master to do a project alone, and 18 hours for an apprentice to do it alone. Now the master will do it for 5 hours, and the apprentice will do the rest. How many hours will it take to complete it?


(1-115 × 5) △ 118, = (1-13) × 18, = 23 × 18, = 12 (hours); a: the rest will be done by the apprentice, and it will take another 12 hours to complete



How to judge whether Z is inductive or capacitive in sinusoidal steady-state alternating current
Find theory or formula or vector graph


RCZ series circuit, no inductance, only capacitance, is obviously capacitive circuit



The number of students in a class is close to 50. They are divided into 8 and 12 groups, and all the students are just finished


8=2×2×2
12=2×2×3
The least common multiple of 8 and 12 is 2 × 2 × 2 × 3 = 24
The common multiple of 8 and 12 close to 50 is 24 × 2 = 48
So there are 48 people in this class



Look at the graph and find the nth power of matrix A


Generally speaking, a ^ n is to diagonalize first and then find the nth power. But if a can't diagonalize, linear algebra has no way. There is a further discussion in matrix theory, which is called "jondan canonical form of matrix". It can solve all such problems. A = B + C, where B = 100



What about the plural w


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Case construction method pronunciation example words
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In general, add - S 1. Read after consonant / S /; map maps
2. Voiced consonants and bag bags after vowels
Read / Z /; car cars
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S, SH, CH,
The words ending in X and so on are read with - ES / iz / bus buses
watch-watches
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With CE, Se, Ze,
(d) And so on
S / iz / license licenses
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Change the consonant letter + y into I
At the end of the word, add es to read / Z / Baby --- babies
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There are 50 people going for a spring outing, and they need to rent a boat. The big boat costs 24 yuan each, and the limit is 6 people; the small boat costs 20 yuan each, and the limit is 4 people. How to rent a boat at least?


It's 220 yuan to rent 11 boats, 44 people, and 244 yuan for the other 6 people