Answer:
B ( 3.7 , -1.1)
Step-by-step explanation:
<h3>
Given</h3><h3>
x + y = 2.6.......equation 1</h3>
y = 3x - 12.2.......equation 2
Putting equation 2 I. equation 1
x + 3x - 12.2 = 2.6
4x = 2.6 + 12.2
4x = 14.8
Therefore x = 3.7
Now
y = 3 * 3.7 - 12.2
= 11.1 - 12.2
= -1.1
Answer:
y = -1/11
Step-by-step explanation:
-10y= y+ 1
-11y = 1
y = -1/11
Answer
Find out the possible heights of her fourth plant.
To prove
Let us assume that the possible heights of her fourth plant be x.
As given
Millie needs the average height of the plants she is buying to be atleast 73 inches.
She has selected three plants that are 70, 71, and 72 inches tall.
Average formula
Put the value
Here Total numbers of flowers = 4
Put in the formula
79 ≤ x
Therefore the possible height of the fourth plant be 79 .
Answer: C
Step-by-step explanation:
Ed is traveling at 63 miles per hour so it will have a variable. He already drove 242 miles, and is planning to drive 668 miles. Because the goal is 668, this whole equation equals 668.
Answer:
B
Step-by-step explanation:
Given
(x - 5)²
= (x - 5)(x - 5)
Each term in the second factor is multiplied by each term in the first factor, that is
x(x - 5) - 5(x - 5) ← distribute both parenthesis
= x² - 5x - 5x + 25 ← collect like terms
= x² - 10x + 25 → B
