Design the concrete mix according to the following conditions: design environment building frame required design strength -27.6 mpa minimum dimension-150 mm minimum space between rebar minimum cover over rebar 40 mm statistical data indicate a standard deviation of compressive strength of 40 mm 2.1 mpa is expected (more than 30 samples) only air entrainer is allowed available materials air entrainer: manufacture specification 6.3 ml/100 air/100 kg cement. coarse aggregate: 19 mm nominal maximum size, river gravel (rounded) bulk oven-dry specific gravity-2.55. absorption-0.3% oven-dry rodded density - 1761 kg/m3 moisture content 2.5% fine aggregate: natural sand bulk oven-dry specific gravity-2.659, absorption-0.5% moisture content-2% fineness modulus 2.47

how is this a question? in order for me to answer it i have to understand the question

explanation:

answer:

science is the study of the nature and behavior of natural things and the knowledge that we obtain about them. a science is a particular branch of science such as physics, chemistry, or biology. physics is the best example of a science which has developed strong, abstract theories.

pseudoscience is a collection of beliefs or practices mistakenly regarded as being based on scientific method.

plz rate as brainliest

answer:

the answer is d

explanation:

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only