2 years ago

Find each product using the FOIL method (6d-5)(4d-7) Plz help!

Mathematics

1 answer:

Stells [14]2 years ago

4 0

The answer is 24d^2-62d+35

You might be interested in

Mario has a business selling muffins. Let x be the price of a muffin. Then, the profit P for Mario’s business is given by p(x)=-

Rufina [12.5K]

To make a positive profit p(x)>0 we need to make:
$-100 x^{2} +350x-150 \ \textgreater \ 0$

Now we solve this for x:
$-2 x^{2} +7x-3 \ \textgreater \ 0$

We have:
a = -2
b = 7
c = -3

We will use formula for quadratic equation:
$x_{1} = \frac{-b+ \sqrt{ b^{2}-4ac } }{2a} \\ \\ x_{2} = \frac{-b- \sqrt{ b^{2}-4ac } }{2a} \\ \\ x_{1} = \frac{-7+ \sqrt{ 49-24 } }{-4} = \frac{-7+5 }{-4} = \frac{-2 }{-4} = \frac{1}{2} \\ \\ x_{2} = \frac{-7- \sqrt{ 49-24 } }{-4} = \frac{-7-5 }{-4} = \frac{-12 }{-4} = 3$

We got two solutions. One is fraction other is whole number. We will not consider fraction because the amount of muffins sold must be whole number. So our solution is:
x>3

5 0

2 years ago

Read 2 more answers

Subtract -1/2n - (-1/2n)

9966 [12]

Answer: 0
Explanation:
-1/2n -(-1/2n)
= -1/2n + 1/2n
= 0

8 0

2 years ago

Please find sin r please

LiRa [457]

Sin r = 20/29

SOHCAHTOA

R:
(O) opposite - 20
(A) adjacent - 21
(H) hypotenuse - 29

4 0