4:7
7-4=3
if al has 60 more than ruth
60=3 units
divide by 3
20=1unit
20 times 4=80
20*7=140
so ruth:alison=80:140
alisonn gave 35 to ruth
80+35=115
140-35=105
so ruth:alson=115:105=23:21
new ratio is 23:21
Answer:
Option B, two variables are measured and two groups are compared
Step-by-step explanation:
In a correlation study relationship between two variable is established.
The two variables represents two group.
For instance correlation study is conducted to determine the relationship between two variables X and Y
X and Y are variable
While X represents the group "number of cars passing through a lane"
Y represents the group "width of the road".
Hence, Option B is correct
Carlotta just needs to evaluate both expressions
Say y = 2
3y + 5y³ = 3(2) + 5(2)³ = 6 +40 = 46
8.y**4 <span> = 8*(2)**4 = 8*(16) = 128
This means that </span>3y + 5y³ ≠ 8.y**4
The new polynomial identity is 2(x² + 2xy + y²)
Given,
The polynomial identities
Column A Column B
(x − y) (x2 + 2xy + y2)
(x + y) (x2 − 2xy + y2)
(y + x) (ax + b)
(y − x) (cy + d)
We have to square an identity from column A and add it with any one identity from column B.
So,
Lets take (x + y)
(x + y)² = x² + 2xy + y²
We can add this identity with x² + 2xy + y² in column B.
That is,
x² + 2xy + y² + x² + 2xy + y²
= 2x² + 4xy +2 y²
= 2(x² + 2xy + y²)
That is,
The new polynomial identity is 2(x² + 2xy + y²)
Learn more about polynomial identity here;
brainly.com/question/11491967
#SPJ1
Answer:
7
Step-by-step explanation:
