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3 years ago

93 is what percent of 186?

Mathematics

2 answers:

ValentinkaMS [17]3 years ago

8 0

Answer:

50 %

Step-by-step explanation:

186 ............. 100%

93 ....................x%

x = 93×100/186

= 100/2

= 50 %

ra1l [238]3 years ago

4 0

Answer:

50%

Step-by-step explanation:

93/186=.5

.5*100=50%

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What percent of 135 is 68? Round to the nearest tenth of a percent.

Sholpan [36]

Answer:

68 ÷ 134 = 0.5075

0.5075 * 100 = 50.75

68 of 134 = 50.75%

Step-by-step explanation:

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2 years ago

How do I find the maximum profit of -30x2+660x-1500

lina2011 [118]

Answer:

2,130

Step-by-step explanation:

1. solve for x.

$x=-\frac{b}{2a}$

when $ax^{2} +bx+c$

$x=\frac{-660)}{2(-30)}\\\\x=\frac{-660)}{-60}\\\\x=11$

2. place value for X into equation

$y=-30x^{2} +660x-1,500\\y=-30(11)^{2} +660(11)-1,500\\y=-30(121)+7,260-1,500\\y=-3,630+7,260-1,500\\y=3,630-1,500\\y=2,130$

Maximim profit is 2,130.

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3 years ago

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

An article claims that 12% of trees are infested by a bark beetle. A random sample of 1,000 trees were tested for traces of the

inna [77]

Answer: 0.6812

Step-by-step explanation:

Let p be the population proportion of trees are infested by a bark beetle.

As per given: p= 12%= 0.12

Sample size : n= 1000

Number of trees affected in sample = 1000

Sample proportion of trees are infested by a bark beetle. = $\hat{p}=\dfrac{127}{1000}=0.127$

Now, the z-test statistic : $z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

So, $z=\dfrac{0.127-0.12}{\sqrt{\dfrac{0.12\times 0.88}{1000}}}$

$z=\dfrac{0.007}{\sqrt{\dfrac{0.1056}{1000}}}\\\\\\=\dfrac{0.007}{\sqrt{0.0001056}}\\\\\\=\dfrac{0.007}{0.010276}\approx0.6812$

Hence, the value of the z-test statistic = 0.6812 .

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3 years ago