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Alexxandr [17]
4 years ago
5

Is it c or d ?im confused on this question

Mathematics
1 answer:
sladkih [1.3K]4 years ago
8 0
It’s D, when lines are perpendicular, the slopes of the lines are opposite reciprocals.
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The perimeter of a rectangle is 20 ft. The width 8th 4 ft less than the length. Find the dimensions of the rectangle
Gala2k [10]
Perimiter is 20ft
width is
what
do you mean the width is  8 feet less than the length? or 4ft less?

anyway

P=2(L+W)
20=2(L+W)
divide by 2
10=L+W
and
L=10-W

width is 4ft less than length (I assuming)
W=-4+L
repalce W with -4+L
L=10-(-4+L)
L=10+4-L
L=14-L
2L=14
L=7
W=-4+L
W=-4+7
W=3

it is 7ft by 3ft
7 0
3 years ago
Suppose about 400,000 people live in an area of 160 square miles. What is the best estimate for the population density?
blondinia [14]

Answer:

2500 people PER square mile

Step-by-step explanation:

THe population density is the population per unit area.

Here,

Given:

Population = 400,000

Total Area = 160 sq. miles

To get population density, we would need the population PER UNIT AREA, per miles.

We can get that by dividing the total population by total area:

400,000/160 = <u>2500 people PER square mile</u>

This is the population density.

5 0
4 years ago
Nvm lollll jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
Inessa [10]
What is the question that you are wanting answered.
3 0
3 years ago
Read 2 more answers
Diabetes is a disease that affects millions of Americans. In fact, about 25,585,000 U.S. adults had diabetes in 2010. At that ti
denis-greek [22]

Answer:

8.28%

Step-by-step explanation:

According to the U.S. Census Bureau, the legal official department in charge of the National Census every ten years, the population of the U.S.A in 2010 was<em> 308,745,538 inhabitants.</em>

If about 25,585,000 had diabetes, then <em>cross multiplying</em>

308,745,538-------100%

25,585,000---------x%

and

\frac{308,745,538}{25,585,000}=\frac{100}{x}

and so, about

x=\frac{25,585,000*100}{308,745,538}=8.28 \%

Americans had diabetes in 2010.

7 0
4 years ago
Please please please help!! I need this URGENT
Alinara [238K]

Answer:

So it depreciates at a rate of 1.4% so 25% a year and you do £2700 multiply by 25 each year £2700 multiply by 25 x 5 = £540 in 5 years

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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