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3 years ago

I need help answering this plus I need my work shown too

Mathematics

2 answers:

Virty [35]3 years ago

8 0

Answer:

b=18

Step-by-step explanation:

1) Add 2/9b to both sides:

3=5/9b-7

2) Add 7 to both sides:

5/9b=10

3) Multiply both sides by the reciprocal of 5/9: (9/5)

b=90/5

4) Simplify:

b=18

Tasya [4]3 years ago

3 0

You can use algebra Calculators they also tell you how to do it and show the work and give the correct answer

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Country A has a growth rate of 3.4% per year. The population is currently 4,118,000, and the land area of Country A is 29,000

Eduardwww [97]

Answer:

time period is 260.57 years

Step-by-step explanation:

given data

growth rate = 3.4 % = 0.034

population = 4118000

area P = 29000000000 square yard

to find out

time period that one person for every square yard of land need

solution

we will apply here population growth formula that is

total population P = initial population × $e^{rt}$ ..............1

here r is rate of growth and t is time period and

we consider here initial population is current population

so put value in equation 1 to get t

29000000000 = 4118000 × $e^{0.034t}$

take ln both side

ln 7042.25 = ln $e^{0.034t}$

8.8596 = 0.034 t

t = 260.57

so time period is 260.57 years

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3 years ago

#3 please. Thank you

pav-90 [236]

Do it do it do it do it do it figure the answer

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3 years ago

F the radius of a flying disc is 7.6 centimeters, what is the approximate area of the disc?

hoa [83]

Answer:

3.14x7.6=23.864 because raidus is the disctance around one circle

Step-by-step explanation:

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3 years ago

What is the exact value of x?

Nadya [2.5K]

Exact value of x will be 8 x sin(60)

Exact value of sin 60 = √3/2

So √3/2 x 8= 8 √3/2

Can be simplified to 4 √3

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2 years ago

81% of___ is 405<br> Pls help

motikmotik

Of means multiplication and Is means equals. So 0.81x =405
X = 500

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3 years ago

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