Answer:
Step-by-step explanation:
hello :
(x² - 10x) + (y² - 2y) + 15 = 0
(x² - 10x+25-25) + (y² - 2y+1-1) + 15 = 0
(x² - 10x+25)-25 + (y² - 2y+1)-1 + 15 = 0
(x-5)²+(y-1)² = 11
the center is (5;1) and radius √11
Answer:
78 inches.
Step-by-step explanation:
By definition, a foot is equal to 12 inches. That is modeled by the equation you wrote, y = 12x, where x is the amount of feet.
Substitute 6.5 for x. y = 12*6.5 = 78 inches.
I hope this helps!
<span># of books = 4 ; original cost = 4*9=36; savings = 0.10*36= 3.60
</span>
<span># of books = 2 ;original cost = 2*20=40; savings = 0.20*40= 8.00
</span>
<span>Percent savings:
original total cost=$76
Total savings = $11.60
Percent savings: 11.60/76 = 0.1526..= 15.26%</span>
Answer:
6.84%
Step-by-step explanation:
we know that
In this problem
Tara's monthly income ($3,200) represent the 100%
so
using proportion
Find out what percentage represent $219
Let
x ----> the percentage that represent $219
Answer:
A
Step-by-step explanation:
Given
(3x² - 11x - 4) - (2x² - x - 6)
Distribute both parenthesis, noting the second is distributed by - 1
= 3x² - 11x - 4 - 2x² + x + 6 ← collect like terms
= x² - 10x + 2 ← this is a quadratic with 3 terms, thus trinomial → A
