this is a problem in English:
A shop on the first day was seventy eight sacks of rice import, the second day were 91 sacks of rice import. Knowing enter second day over the first day was five hundred and ninety-one point five kg of rice. Ask the store both days enter how much ki - Lot - grams of rice? (Know the weight of each bag of rice is the same)
Answer: Both days are kg rice import stores.
(Enter the result as the most compact decimal)

Bài này rất dễ , bạn nào làm được mk sẽ ủng hộ 2 cái

Twenty years ago few people ( 1. realize )........... that computer were about to become part of our daily lives. This short period of time (2. see)....... enormous changes in businees, education and public administration. Jobs which (3. take) ......... weeks to complete in the past are now carried out in minute. Clerks who(4. spend).......... all day copying and checking calculation are now freed from these tedious tasks. In offices, the soft hum and clicking of word processors (5. replace) ......... the clatter of typewrites. Schoolchildren (6. become )............. as familiar with hardware and software as their parents (7 be)...... with pencils and exercise books. Computerization of public records(8. enable) ......... government departments to analyze the needs of citizens in detail. Some of us may wonder, however, whether life (9. really/ improve) ...................... as a result of these changes. Many jobs (10.disappear) ............... for example when intelligent machines (11.take)........ over the work. Employers complain that clerial staff (12. become) ........... dependent on calculator and canot do simple arithmetic. There are fears that governments (13.not/do) ............. enough to ensure that personal information held on computers is really kept secret. Certainly, many people may now be wondering whether the spread of computer (14. bring) ............ us as many problems as it (15. solve).........

Câu 1 The function mm is defined on the real numbers by m(k) = \dfrac{k+2}{k+8}m(k)= k+8 k+2 ​ . What is the value of 10\times m(2)10×m(2)? Answer: Câu 2 The function ff is defined on the real numbers by f(x)= ax-3f(x)=ax−3. What is the value of a if f(3)=9f(3)=9? Answer: Câu 3 The function ff is defined on the real numbers by f(x)= 2x+a-3f(x)=2x+a−3. What is the value of a if f(-5)=11f(−5)=11? Answer: Câu 4 The function ff is defined on the real numbers by f(x) = 2 + x-x^2f(x)=2+x−x 2 . What is the value of f(-3)f(−3)? Answer: Câu 5 Given a real number aa and a function ff is defined on the real numbers by f(x)=-6\times|3x|-4f(x)=−6×∣3x∣−4. Compare: f(a)f(a) f(-a)f(−a) Câu 6 There are ordered pairs (x;y)(x;y) where xx and yy are integers such that \dfrac{5}{x}+\dfrac{y}{4}=\dfrac{1}{8} x 5 ​ + 4 y ​ = 8 1 ​ Câu 7 Given a negative number kk and a function ff is defined on the real numbers by f(x)=\dfrac{6}{13}xf(x)= 13 6 ​ x. Compare: f(k)f(k) f(-k)f(−k) Câu 8 Given a positive number kk and a function ff is defined on the real numbers by f(x)=\dfrac{-3}{4}x+4f(x)= 4 −3 ​ x+4. Compare: f(k)f(k) f(-k)f(−k). Câu 9 A=(1+2+3+\ldots+90) \times(12 \times34-6 \times 68):(\dfrac{1}{3}+\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{1}{6})=A=(1+2+3+…+90)×(12×34−6×68):( 3 1 ​ + 4 1 ​ + 5 1 ​ + 6 1 ​ )= Câu 10 Given that \dfrac{2x+y+z+t}{x}=\dfrac{x+2y+z+t}{y}=\dfrac{x+y+2z+t}{z}=\dfrac{x+y+z+2t}{t} x 2x+y+z+t ​ = y x+2y+z+t ​ = z x+y+2z+t ​ = t x+y+z+2t ​ . The negative value of \dfrac{x+y}{z+t}+\dfrac{y+z}{t+x}+\dfrac{z+t}{x+y}+\dfrac{t+x}{y+z} z+t x+y ​ + t+x y+z ​ + x+y z+t ​ + y+z t+x ​ is

Choose the letter A, B, C or D to complete the passage below

Water pollution happens __________ (1) toxic substances enter water bodies such as lakes, rivers, oceans and so on, getting dissolved in them, lying suspended in the water or depositing on the bed. This degrades the quality of water. Not __________ (2) does this spell disaster for aquatic ecosystems, the pollutants also seep through and reach the groundwater, which might end up in our households as contaminated water we use in our daily activities, including drinking.

Water pollution can be __________ (3) in a number of ways, one of the most polluting being city sewage and industrial waste discharge. Indirect sources __________ (4) water pollution include contaminants that enter the water supply from soils or groundwater systems and from the atmosphere via rain.

Question 2:

A. both

B. only

C. well

D. either