Answer:

Step-by-step explanation:
this goes with BODMAS .so it means bracket of divison,multiplication ,addition and subtraction
this means that you would have to solve the one in the bracket first before you'll continue with the rest,that is the subtraction.
Answer:
Step-by-step explanation:
Both 38 and 58 are even so they both can be divided by 2,
38/58
19/29
that is in the simplest form
Answer:
No they are equivalent
Step-by-step explanation:
3/7 =21/35
3/5=21/35
Answer:
In common scientific notation, any nonzero quantity can be expressed in two parts: sufficient whose absolute value is greater than or equal to 1 but less than 10, and a power of 10 by which the coefficient is multiplied. In some writings, the coefficients are closer to zero by one order of magnitude. In this scheme, any nonzero quantity is expressed in two parts: a coefficient whose absolute value is greater than or equal to 0.1 but less than 1, and a power of 10 by which the coefficient is multiplied. The quantity zero is denoted as 0 unless precision is demanded, in which case the requisite number of significant digits are written out