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Lerok [7]
3 years ago
14

The lines below are parallel. If the slope of the green line is -3, what is the

Mathematics
1 answer:
julia-pushkina [17]3 years ago
8 0

Answer:-3

Step-by-step explanation:

The expression is already in decimal form.

−3 slope

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The population of a city is growing at an average rate of 3% per year in 1990 the population was 45 000.
Nonamiya [84]
This is an exponential growth/decay problem...

F=Ir^t, F=final value, I=initial value, r=rate, t=time, in this case:

F=I(1.03)^t  and they just want to know when F=2I so

2=1.03^t  take natural log of both sides...

ln2=t*ln1.03

t=ln2/(ln1.03)

t≈23.45

So it will take approximately 23.45 years for the population to double..

1990+23.45=2013.45

So during the year of 2013 the population will have double from its 1990 level.
5 0
3 years ago
Lightning electronics changes $9.98 plus 0.75 per pound to ship electronics purchases. Write and solve an equation to find the w
Blizzard [7]

Answer: 11 pounds

Step-by-step explanation:

x : # of pounds an electronic is

9.98 + 0.75x : total cost of shipping an electronic that is "x" pounds

9.98 + 0.75x = 18.23

0.75x = 8.25

x = 11 pounds

4 0
3 years ago
A line with a slope of 4 passes through the point (2, 1). What is the equation of this line?
olasank [31]

Answer:

point slope form: y - 1 = 4 (x -2)

slope intercept form: y = 4x -7

Step-by-step explanation:

If you want it in point slope form it would be: y - 1 = 4 (x -2)

but if you want it in slope intercept form, you solve this equation

y -1 = 4 (x-2)

y-1 = 4x -8

 +1          +1

y = 4x -7 in slope intercept form

7 0
3 years ago
Staci has seven more cats than Taylor. Write an expression that illustrates how many cats Staci has. Use X to represent the numb
Tanzania [10]

Answer:

x + 7

Step-by-step explanation:

If the amount of cats Taylor has is x and Staci has 7 more cats you are basically adding 7

so since The amount of Taylor's cats are x and you are adding 7 it would be written as

x+7

8 0
3 years ago
The area of square ABCD is 144 square units. The area of square EFGH is 64 square
Mariana [72]

Answer:

80

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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