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2 years ago

11

A school wants to buy a chalkboard that measures 3 feet by 4 feet the chalkboard cost $6.14 per square foot. How much will the c

halkboard cost

1 answer:

ElenaW [278]2 years ago

8 0

Answer:

$49.12

Step-by-step explanation:

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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

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2 years ago

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5x+3y>_ 9 <br> ^<br> This sign is supposed to be greater than Or equal to. Sorry.

Andre45 [30]

It’s saying the equation is going to be equal to.

HOPE THIS HELPS

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2 years ago

Geoff earns 10% commission on his total sales at work..To pay for a concert ticket, Geoff needs to earn $135 in commission. What

statuscvo [17]

Answer:

$1350

Step-by-step explanation:

Percentage commision earned = 10%

Amount needed to pay for concert = $135

Hence, total sales for the week must be :

Let total sales = x

10% of total sales = $135

10/ 100 * x = $135

0.1x = $135

x = $135 / 0.1

x = $1350

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2 years ago

What is the difference? <br> 4/3-7/9

Alecsey [184]

Answer:

Step-by-step explanation:

4/3-7/9=12/9-7/9=5/9.

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2 years ago

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What is the next term of the geometric sequence?<br> 2,6,18,

DedPeter [7]

Answer:

54

Step-by-step explanation:

keep multiplying by 3

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3 years ago