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emmainna [20.7K]

3 years ago

7

Which answer choice correctly completes the sentence? The bridge was closed, but that hasn't __________ us any time. A. costed B

. costen C. cost

1 answer:

Rainbow [258]3 years ago

7 0

The bridge was closed, but that hasn't <span>cost </span>us any time

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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

5 0

2 years ago

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Which graph represents x

Maurinko [17]

The answer is the second graph.

$\frac{x}{3} \leq 2$
You need to isolate x, in order to do this you need to multiply both sides by 3, or 3/1
2*3 = 6
x/3 * 3 = x
Your equation should now be
$x \leq 6$

So the circle should be filled in and pointing towards the left starting from 6

4 0

3 years ago

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Use benchmarks to estimate the sum of 9 1/16 +3 1/16

Leno4ka [110]

12 and 1/8, I just simplified 2/16 to 1/8

5 0

3 years ago

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Can there be more than one mean or mode in a math problem??

astraxan [27]

Math. When no number occurs more than once in a data set, there is no mode. If each of two numbers occurs twice, we say the set is bimodal.

5 0

2 years ago

Sherwood has a square flower garden

almond37 [142]

Answer:

9 times

Step-by-step explanation:

3 × 3 = 9

172 ÷ 9 = 9 and 1/9

so she can only fertilize the garden 9 times

7 0

3 years ago