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tankabanditka [31]
3 years ago
9

If u were me which homework would you do first?Aka FF.4 is math.And teenbiz is Ela.

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
4 0
I would do Math First just to nock it out the way
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Keegan is printing and selling his original design on t-shirts. He has concluded that for x shirts, in thousands sold his total
Katarina [22]

Answer:

t-shirts: 2790

profit: $12209

Step-by-step explanation:

Given  the function:

p(x) = -x³ + 4x² + x

we want to maximize it.

The following criteria must be satisfied at the maximum:

dp/dx = 0

d²p/dx² < 0

dp/dx = -3x² + 8x + 1 = 0

Using quadratic formula:

x = \frac{-b \pm \sqrt{b^2 -4(a)(c)}}{2(a)}

x = \frac{-8 \pm \sqrt{8^2 -4(-3)(1)}}{2(-3)}

x = \frac{-8 \pm 8.72}{-6}

x_1 = \frac{-8 + 8.72}{-6}

x_1 = -0.12

x_2 = \frac{-8 - 8.72}{-6}

x_2 = 2.79

d²p/dx² = -6x + 8

d²p/dx² at x = -0.12: -6(-0.12) + 8 = 8.72 > 0

d²p/dx² at x = 2.79: -6(2.79) + 8 = -8.74 < 0

Then, he should prints 2.79 thousands, that is, 2790 t-shirts to make maximum profits.

Replacing into profit equation:

p(x) = -(2.79)³ + 4(2.79)² + 2.79 =  12.209

that is, $12209

3 0
3 years ago
Lalo has 1,500 minutes per month on his cell phone plan. How many more minutes can he use if he has already talked for 785 minut
emmainna [20.7K]

Answer:

All you have to do is subtract 1500-785 in order to find the number of minutes left for him.

1500-785=715 more minutes left



4 0
3 years ago
2 2/3× 4 1/5 help me plzzzzz!!!
Rus_ich [418]
First let's multiply the whole numbers 2 and 4. Obviously that is 8. Now let's put aside the whole number and multiply fractions.

2/3 x 1/5 is equal to 2x1/3x5 so it's 2/15 which is already in simplest form. 

So your final answer is 8 and 2/15 :)

If this was helpful would you mind marking mine as brainliest please? It helps me rank up a lot!
8 0
3 years ago
Can somebody help me
Alex
31 i hope u got it right !!
3 0
3 years ago
You have a new mobile phone. the phone costs £140 and then you pay for a one year contract at £15 a month. how much do you pay i
wel
£140 + <span>£15(month) =
</span>
£140 + <span>£15(12) =
</span>
£140 + <span>£180 =
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£320<span />
3 0
3 years ago
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