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Marizza181 [45]
3 years ago
8

Use the chart below to answer the question

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
8 0

Answer:

Denmark has the greatest population density, While the USA has the least density population

Step-by-step explanation:

When Calculating Population Density you use d = p/a

Which would make the USA density population

USA

29.12 = 272,648,000 / 9,364,520

Denmark

124.72 = 5,248,000/42,077

Ghana

77.21 = 18,339,000/237,533

Where D is the density, P is the population, A = the area.

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Please help!<br><br> If sin(xº)=cos(yº) find k if x=2k+3 and y=6k+7
USPshnik [31]

answer

10

step-by-step explanation

the equation given is sin(x) = cos(y) with x = 2k + 3 and y = 6k + 7

substitute in 2k+ 3 for x in sin(x) and substitute in 6k + 7 for y in cos(y)

sin(x) = cos(y)

sin(2k + 3) = cos(6k + 7)

we know that sin(x) = cos(90 -x)

sin(2k + 3)

= cos(90 - (2k + 3) )

= cos(90 - 2k - 3)

= cos(87 - 2k)

substitute this into the equation sin(2k + 3) = cos(6k + 7)

sin(2k + 3) = cos(6k + 7)

cos(87 - 2k) = cos(6k + 7)

87 - 2k = 6k +7

80 = 8k

k = 10

7 0
3 years ago
Nick and Adam workout together. Nick weighs 160 pounds and is gaining 3 pounds per week. Adam weighs 195 pounds and is losing ab
hoa [83]

Answer:

7 wks, 181 lbs

Step-by-step explanation:

160+3t=195-2t

160+5t=195

5t=35

t=7 weeks

160+3(7)=195-2(7)=181 pounds

5 0
3 years ago
12w-24=12 solve for 12​
USPshnik [31]

Answer:

3

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Given f(x)= -x^2+3x-4 and g(x)=2/3x +5 find f(g(-9))
scZoUnD [109]

Answer:

0

Step-by-step explanation:

First, you plug -9 into g(x) and you get g(-9) = - 1. After that, you solve f(-1), which you then reach the solution of 0 by solving.

6 0
3 years ago
In December 2004, a report based on the National Survey on Drug Use and Health estimated that 20% of all Americans aged 16 to 20
o-na [289]

Answer:

542

Step-by-step explanation:

We are required to find the sample size at 98% confidence interval in this question

E = 0.04

P* = 20% = 0.20

n = p* x (1-p)(Zα/2÷E)²

α = 1 - 0.98

= 0.02

To get Critical value

= 0.02/2 = 0.01

The critical value at 0.01 is 2.33

Inserting values into formula:

O.2 x 0.8(2.33/0.04)²

= 0.8 x 0.2 x 58.25²

= 542.89

The value of n must be an integer therefore the answer is 542.

4 0
3 years ago
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