Answer:
- 7/5
Step-by-step explanation:
7*5
10*2
35/20 - -35/20
- 7/5
Answer:-7 1/7 or -7.14285714286
Step-by-step explanation:
(−2) ( 3 4 /7 )
(-2)(25/7)
(-50/7)
-7 1/7
Or in decimals: -7.14285714286
" 2.5 times a number 'n' " = 2.5n
" 2.5n is subtracted from 6.1 " . . . . that's 6.1 - 2.5n
" the result is -11.4 " . . . . . so <u> 6.1 - 2.5n = -11.4</u>
Add 11.4 to each side : 17.5 - 2.5n = 0
Add 2.5n to each side: 17.5 = 2.5n
Divide each side by 2.5 : 7 = n
We are tasked to solve for the values of z using and applying the zero product property which means that we need to get the factors and equate it to be equal to zero. Such that the given expression z² - 15z + 56 = 0 will have a solution shown below:
z² - 15z + 56 = 0
The expression will have a and b values such as a = - 7 and b = -8.
z² - 15z + 56 = 0
(z -7) (z-8) = 0
solving for the first value of z, we have it:
z - 7 = 0
z = 7
Solving for the second value of z, we have it:
z - 8 = 0
z = 8
Therefore, the answer to this problem is the letter "A" which is 7 and 8.