Answer:
Step-by-step explanation:
Rounding to nearest tenth:
i) if number in 100th place is 5,6,7,8 or 9, then add 1 to number in the tenth place and after adding remove all the digits right to it.
EG: 4.567 = 4.6
ii) if number in 100th place is 0,1,2,3 or 4, then write down number in the tenth place as it is and then remove all the digits right to it.
Eg: 4.523 = 4.5
a) 0.32 = 0.3 (b) 3.87 = 3.9 (c)0.709 = 0.7
d) 12.75 = 12.8 (d)12.745 = 12.8 e) 645.059 = 645.1
the discriminant b^2 - 4ac when the equation is in the form of ax^2 +bx+c=0
13x^2-16x = x^2 -x
we need to get in it the standard form
subtract x^2 from each side
12x^2 -16x = -x
add x to each side
12x^2 -15x = 0
12x^2 -15x -0 =0
a=12 b=-15 c=0
b^2 -4ac
the discriminant = b^2
b^2 = (-15)2 = 225
Answer:
y = 6x - 9
Step-by-step explanation:
The function is; y = 6x - 9
Here, variable x is independent.
Answer: x = 11
Step-by-step explanation:
<em>first, i did simple calculations.</em>
4x(2) = 88
<em>that calculates out to: </em>
8x = 88
<em>then, i divided both sides by 8, in order to get x by itself.</em>
8x/8 = 88/8
x = 11
Answer:
Step-by-step explanation: What was question 7
