Its 9-1 so that would be 8 idk if you are right just noticed and though it would help
Answer:
25/18
Step-by-step explanation:
hope this helps!
Answer:
$3.91
Step-by-step explanation:
This is a fraction equal to
100 count ÷ 25.54 cost
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 25.54
100 count ÷ 25.54
25.54 cost ÷ 25.54
=
3.915427 count
1 cost
=
3.915427 count
cost
= 3.915427 count per cost
Answer:
Walter builds birdhouses. he spends $5 on the materials for each birdhouse. he can build one in 30 minutes. he is semi-retired but earns $8 per hour at the local hardware store. he can sell a birdhouse for $20 each. refer to scenario 13-11. the explicit cost for one birdhouse is
Step-by-step explanation:
Answer:
(- 2, 15 ) and (2, 7 )
Step-by-step explanation:
Given the 2 equations
y = 3x² - 2x - 1 → (1)
2x + y = 11 → (2) ← subtract 2x from both sides
y = 11 - 2x → (3)
Substitute y = 3x² - 2x - 1 into (3)
3x² - 2x - 1 = 11 - 2x ( subtract 11 - 2x from both sides )
3x² - 12 = 0 ( add 12 to both sides )
3x² = 12 ( divide both sides by 3 )
x² = 4 ( take the square root of both sides )
x = ± 
= ± 2
Substitute these values into (3) for corresponding values of y
x = - 2 : y = 11 - 2(- 2) = 11 + 4 = 15 ⇒ (- 2, 15 )
x = 2 : y = 11 - 2(2) = 11 - 4 = 7 ⇒ (2, 7 )
