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lakkis [162]
2 years ago
13

Officer Brimberry wrote 32 tickets for traffic violations last week, but only 20 tickets this week. What is the percent decrease

? Give your answer to the nearest tenth of a percent.
The percent decrease is
%.

PLEASE HELP!!!!!!!!!!!!
Mathematics
2 answers:
Lerok [7]2 years ago
6 0
0.375 i think is the answer
Papessa [141]2 years ago
6 0

Answer with explanation:

Number of tickets wrote by Officer Brimberry last week = 32

Number of tickets wrote by Officer Brimberry this week = 20

Percent Decrease

     =\frac{\text{Last week}-\text{This week}}{\text{Last week}}\times 100\\\\=\frac{32-20}{32}\times 100\\\\=\frac{12}{32}\times 100\\\\=\frac{1200}{32}\\\\= 37.5

So, Percent decrease in ticket from last week to this week =37.5%  

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PLEASE HELP!!! Blue whales eat an average of 5,000 pounds of fish daily, with a standard deviation of 850 pounds. Approximately
REY [17]

Answer:

15.87% of blue whales eat more than 5,850 pounds of fish

Step-by-step explanation:

Mean = 5000

Standard Deviation = 850

We need to find P(x>5850) = ?

We can find using z-score

z = x - mean/ standard deviation

z = 5850 - 5000/850

z = 850/850

z = 1

Now, P(x>5850) = P(z>1)

Finding value of P(z>1) by looking at the z-score table

P(z>1) = 0.8413

The normal distribution gives area to the left , so subtracting it from 1 to gain the answer

1-0.8413 = 0.1587

Now, to find percentage multiply it with 100

0.1587 * 100 = 15.87 %

15.87% of blue whales eat more than 5,850 pounds of fish

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Step-by-step explanation:

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Maggie has a ribbon 27 feet long.What is the length of the ribbon in yards?
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The ribbon would be 9 yards long
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The product of two consecutive negative integers is 600. What is the value of the lesser integer?
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Let's say the first number is -a, so "a" will be some positive value, and we multiply -1 to it, we get the -a

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\bf (-a)(-a+1)=600\implies a^2-a=600
\\\\\\
\begin{array}{lcclll}
a^2&-a&-600=0\\
&\uparrow &\uparrow \\
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\end{array} \implies (a-25)(a+24)=0
\\\\\\

\begin{cases}
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\end{cases}

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