If it si proportional
y/x=k or y=kx
if k is same throuout, then it is proportional
find their ratio
so
0/0=undefined, ignore
2/3=k
4/6=2/3=k
6/9=2/3=k
yes, proportional
y=kx
3=2k
1=2/3k
2/3 is answer
proprtional (2nd and 3rd)
graph is proprtional, first table is poroprtional
other ones are not
2nd picture is proportional, 3rd is not
(x,y), y is rise, x is run
unit rate is rise/run=15/6=5/2=2.5
unit rate is 2.5
unit rate is (1/2)/(2/5)=(1/2)(5/2)=5/4=1.25
unit rate is 1.25
The answer is 80, because 8 is in the hundreds place which means 80.
Answer:
x > -2
Step-by-step explanation:
Step 1 :
Pulling out like terms :
1.1 Pull out like factors :
-9x - 18 = -9 • (x + 2)
Equation at the end of step 1 :
Step 2 :
2.1 Divide both sides by -9
Remember to flip the inequality sign:
Solve Basic Inequality :
2.2 Subtract 2 from both sides
x > -2
Inequality Plot :
2.3 Inequality plot for
-9.000 X - 18.000 >
One solution was found :
x > -2
Processing ends successfully
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Answer:
A
Step-by-step explanation:
In this question, we are concerned with selecting which of the options best represents the difference of two squares.
Let’s have an exposition below as follows;
Consider two numbers, which are perfect squares and can be expressed as a square of their square roots;
a^2 and b^2
where a and b represents the square roots of the numbers respectively.
Inserting a difference between the two, we have;
a^2 - b^2
Now by applying the difference of two squares, these numbers will become;
a^2 - b^2 = (a + b)(a-b)
So our answer out of the options will be that option that could be expressed as above.
The correct answer to this is option A
Kindly note that;
x^2 -9 can be expressed as x^2 - 3^2 and consequently, this can be written as;
(x-3)(x + 3)
30x - 20 = 50
use inverse operations to isolate x
30x - 20 = 50
+ 20 +20
30x = 70
(30x = 70) /30
x= 7/3 (this is the simplified term)
