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2 years ago

PLEASE HELP

1 answer:

3 0

The inequality that would represent the possible values for the number of cupcakes purchased will be 1.75b + 4.50c = 50

<h3>How to compute the inequality?</h3>

The cupcake costs $4.50 and each brownie costs $1.75 and Fwam has a total of $50 to spend on cupcakes and brownies. W

number of cupcakes purchased = c

number of brownies purchased = b.

Therefore, the inequality that would represent the possible values for the number of cupcakes purchased will be:

= (1.75 × b) + (4.50 × c) = 50.

= 1.75b + 4.50c = 50

The inequality is 1.75b + 4.50c = 50.

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Consider f(x)=-(x+7)^2+4. Which of the following are true for f(x)?Check all that apply.

lisabon 2012 [21]

Answer:

A, D, F

Step-by-step explanation:

A. True, because $f(x)=-(x+7)^2+4$ represents quadratic function (the greatest power of x is 2)

B. False, because this function is quadratic, so cannot be linear

C. False. The vertex of the parabola is at point (-7,4) (see diagram)

D. True. The axes of symmetry is the line x=-7 that passes through the vertex.

E. False. The y-intercept is at point x=0 and $y=-(0+7)^2+4=-49+4=-45.$

F. True. The graph has the maximum at vertex, where $y_{max}=4.$

G. False. The graph of the parabola intersects the x-axis at two points (-9,0) and (-5,0), so x=-9 and x=-5 are two real solutions of the equation f(x)=0.

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3 years ago

The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The d

zaharov [31]

Answer:

P(61≤ X≤94) = 49.85%

Step-by-step explanation:

From the given information:

The mean of the bell shaped fluorescent light bulb μ = 61

The standard deviation σ = 11

The objective of this question is to determine the approximate percentage of light bulb replacement requests numbering between 61 and 94 i.e P(61≤ X≤94)

Using the empirical (68-95-99.7)rule ;

At 68% , the data lies between μ - σ and μ + σ

i.e

61 - 11 and 61 + 11

50 and 72

At 95%, the data lies between μ - 2σ and μ + 2σ

i.e

61 - 2(11) and 61 + 2(11)

61 - 22 and 61 +22

39 and 83

At 99.7%, the data lies between μ - 3σ and μ + 3σ

i.e

61 - 3(11) and 61 + 3(11)

61 - 33 and 61 + 33

28 and 94

the probability equivalent to 94 is when P(28≤ X≤94) =99.7%

This implies that ,

P(28≤ X≤94) + P(61≤ X≤94) = 99.7%

P(28≤ X≤94) = P(61≤ X≤94) = 99.7 %

This is so because the distribution is symmetric about the mean

P(61≤ X≤94) = 99.7 %/2

P(61≤ X≤94) = 49.85%

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3 years ago

One of Tyler’s chores is to feed the chickens. Two bags of chicken feed will last 5 days. How many days will 8 bags of chicken f

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Answer:

20days

Step-by-step explanation:

1 bag feed : 5/2 = 2.5 days

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3 years ago

Help and please explain so I can do it on my own. There are a couple more on this sheet.

Andreas93 [3]

Answer:

(2, -10)

Step-by-step explanation:

so first i find the axis of symmetry using the equation x= -b/2a

in this problem

a=3

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2 will be the x point for your vertex

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