1. if we add something in x then it will also add up in value of y
2. x by 5 times then y value increases by 3*5 = 15 times
3. if x is added with 5 then y value increases by 8.
<h3>What is Algebra?</h3>
Algebra is the part of mathematics that helps represent problems or situations in the form of mathematical expressions.
As, per the first part
y=x
So, if we add something in x then it will also add up in value of x.
In second part,
y=3x
If x by 5 times then y value increases by 3*5 = 15 times
In third part, if x is added with 5 then y value increases by 8.
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Answer:
(3,3)
(-5,19)
Step-by-step explanation:
y= x^2 - 6
y=-2x + 9
Set the two equations equal to each other y=y
x^2 - 6 =-2x + 9
Add 2x to each side
x^2 +2x- 6 =-2x+2x + 9
x^2 +2x- 6 = 9
Subtract 9 from each side
x^2 +2x- 6-9 =9- 9
x^2 +2x- 15 =0
Factor the left hand side
What 2 numbers multiply to -15 and add to 2
-3 *5 = -15
-3+5 = 2
(x-3) (x+5) =0
Using the zero product property
x-3 =0 x+5 =0
x=3 x=-5
Now we find y for each x
x=3
y=-2(3) + 9 = -6+9 =3
(3,3)
x=-5
y=-2(-5) + 9 = 10+9 =19
(-5,19)
AnsweP is eaqul to Q
Step-by-step explanation:
Answer:
(a) False
(b)True
Step-by-step explanation:
(a) A factor in any experiment is a variable (independent) that you can control as you study the results obtained while changing its conditions .This means that the levels of the variable are set by experimenter as you perform the experiment.A factor can have two or more levels.These levels when combined, they form treatments.A factor is controlled by setting it to different levels,two or more to enable the researcher introduce different values of the factor to observe the trend in the results.Hence, set a factor to levels is very important.
(b)Randomization is when participants in an experiment are chosen to prevent bias.When randomization is applied, the participating groups will be similar in that there will be no accidental bias due to unbalance criterion.Additionally, selection bias that could arise due to underrepresented group will be eliminated.
Answer:
4x+28-9
Step-by-step explanation:
4 times x and 7 - 9