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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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Marine scientists have previously measured the weight of a wide-ranging fish to be 9.0 lbs with a standard deviation of 0.35 lbs
fenix001 [56]
Given:
Actual: 9.0 lbs with standard deviation of 0.35 lbs
sample: 8.2 lbs

standard deviation means that the fish caught should be within the range of  8.65 and 9.35

9.00 + 0.35 = 9.35 lbs
9.00 - 0.35 = 8.65 lbs

The sample that had an average weight of 8.2 lbs is not a representative of the population because its weight goes beyond the standard deviation. 
8 0
2 years ago
Jenna concludes that (4,9) is the solution to the system of these two equations. which of the following justifies her conclusion
nalin [4]

<u><em>Answer:</em></u>

a. The point (4,9) appears in both tables

<u><em>Explanation:</em></u>

<u>Note:</u> This question can be solved without the need of the tables

<u>A solution of a system of equations</u> is defined as a point (or set of points) that satisfy both equations

<u>This means that,</u> this point should belong to all the equations in the system

Now, a table is used to show a set of points that belong to a certain line

This means that, all vales in the table belong to the line they represent

<u>Since the point (4,9) appears in both tables</u>, therefore, it belongs to both lines and, therefore, is a solution to the system of equations consisting of these two lines

Hope this helps :)

5 0
2 years ago
A sailor is looking at a kite. If he is looking at the kite at an angle of elevation of 36and the distance from the boat to the
Nonamiya [84]

Answer:

Height of the kite from the ground is 29.2 feet.

Step-by-step explanation:

For better explanation of the solution, see the figure attached :

The angle formed by the height of kite to that of the surface of the ground is right angle.

⇒ m∠ABC = 90°

Let angle of elevation be θ

Now, to find height of the kite : find length of AB

In right angled triangle ABC , using tan rule, we have\tan\theta=\frac{Perpendicular}{Base}\\\\\tan36^{\circ}=\frac{AB}{BC}\\\\\implies \tan36^{\circ}=\frac{AB}{40}\\\\\implies AB=0.73\times 40\\\\\bf\implies AB=29.2\thinspace{ feet}

Hence, Height of the kite from the ground is 29.2 feet.

7 0
2 years ago
The coordinate values of the vertices of △klm are integers. triangle klm has vertices located at (1, 1), (5, 4) and (5, 1). whic
worty [1.4K]
The rest of the queastion is :
<span> A) (-1, 1), (-1, 4), (2, 1)
B) (0, 0), (3, 4), (0, 5)
C) (-1, 1), (-4, 5), (-1, 5)
D) (0, 0), (-5, 0), (0, 4)
==============================
</span>

<span>The distance between two points (x₁,y₁),(x₂,y₂) = d
d = \sqrt{ (x2-x1)^{2} + (y2-y1)^{2} }</span>


we have <span>K(1, 1), L(5, 4) and M(5, 1)
we will find the length between each two points.
KL = </span><span>d = \sqrt{ (5-1)^{2} + (4-1)^{2} } = 5
</span>LM = <span>d = \sqrt{ (5-5)^{2} + (1-4)^{2} } = 3
KM = </span><span>d = \sqrt{ (5-1)^{2} + (1-1)^{2} } = 4

now check each group from the choices
the group that will give the same result will be the correct choice.
</span>The correct choice is C
<span>C) (-1, 1), (-4, 5), (-1, 5)

check the answer;
</span><span>K'(-1, 1), L'(-4, 5), M'(-1, 5)
</span>
<span>K'L' = <span>d = \sqrt{ (-4+1)^{2} + (5-1)^{2} } = 5
</span>L'M' = <span>d = \sqrt{ (-1+4)^{2} + (5-5)^{2} } = 3
K'M' = </span><span>d = \sqrt{ (-1+1)^{2} + (5-1)^{2} } = 4</span></span>
6 0
2 years ago
What is the median of these numbers 2.4,2.8,2.3,2.9,2.9
liberstina [14]

Answer:

2.8

Step-by-step explanation:

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