9514 1404 393
Answer:
y = -3x^2 +3x +6
Step-by-step explanation:
For roots p and q, the equation can be written as ...
y = a(x -p)(x -q)
The value of 'a' must be determined so that the product <em>apq</em> is equal to the y-intercept. One could say that the formula is ...
y = (y-intercept)/(pq)·(x -p)(x -q)
For your given values of p = 2, q = -1, y-intercept = 6, this becomes ...
y = 6/(2(-1))(x -2)(x +1)
y = -3(x^2 -x -2) . . . . . simplifying a bit
y = -3x^2 +3x +6
Is the question how much it cost per kg?
If so, divide $13 by 1 3/7 kg.
13/(1 3/7) = 13/(10/7) = 13 * 7/10 = 91/10 = 9 1/10
Answer is 9 1/10 dollars per kg.
(Assuming I guessed your question correctly.)
Answer:
A
Step-by-step explanation:
The rhombus cuts the shorter side of the rectangle in half so it's equal to 5
we use pythagoras
so the larger side is 2x=24
so the area is 24*10=140cm^2
Divide the total number of yards (5 yards) by the bracelet size (18").
STEP 1:
convert total yards to inches
1 yard= 36 inches
= 5 yards * 36 inches
= 180 inches total
STEP 2:
divide total inches by bracelet size
= 180 ÷ 18 inch bracelet
= 10 bracelets
ANSWER: She can make 10 bracelets.
Hope this helps! :)