Answer:
a) 21m - 0.87 = m
b) m = 0.0435 mg
21(0.0435) - 0.87 = 0.0435
0.9135 - 0.87 = 0.0435
0.0435 = 0.0435
True statement, so correct
c) 21m - 0.87 = m
20m = 0.87
m = 0.87/20
m = 0.0435 mg
0 is the real number for which there is no multiplicative inverse.
<u>Solution:</u>
Need to find a real number not having multiplicative inverse. Let’s first understand what is multiplicative inverse.
<em>Multiplicative inverse of a real number</em> is that number which when multiplied to the real number gives result as 1.
That is product of real number and multiplicative inverse is always 1.
Can you imagine any real number which whatever be the case, when multiplied by any number will never give result as 1.
Think about 0.
Whenever any number multiplied by 0, result is always zero. So there will never be a case when zero multiplied by any number gives result as 1.
Hence 0 is that real number for which there is no multiplicative inverse.
To find the difference in two lengths we need to subtract them
but here both length are given in mix fraction form
let us first try to write them in simple fraction form .
the first is : 2 7/8 we write it as : (8* 2 + 7 )/ 8 = 23/8
The second is : 1 1/2 we write it as : ( 2*1 + 1) /2 = 3/2
Let us now try finding difference : 23/8 - 3/2
as both have different number in the bottom we try to make a same number in denominator of both fractions .
2 can become by multiplying it to 4 .
let us multiply 3/2 by 4/4 it makes : ( 12 /8 )
now both fractions can be subtracted . (23/8 ) - ( 12/8 )
( 23 - 12 ) /8 = ( 11/8 )
that is the answer : 11/8 miles.
Step-by-step explanation:
Sketh the graph of each linear inequality
Here is how to graph it :) :
