el parqueo a abarca un área de 4926 kilómetros cuadrados.esto es 1845 kilómetros cuadrados más que el parqueo b.el parqueo c es 4006 kilómetros cuadrados más que el parqueo a.cual es el área de estos tres parqueo? evaluar la razonabilidad de su respuesta

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Answer 1

Answer: Can you translate the question in English

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Answer the question as an multiple choice.
Substitution for 4x+y=9 and y=-7
Evaluate the expression 15-(37 8) divided by 3

Linear equation of line with slope 1/4

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Answer:

1/4x

Step-by-step explanation:

1/4x is a linear equation because it has a constant slope, and the slope of a line is shown before the x.

What's 3 17/100 as a decimal

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3 17/100 as a decimal is 3.17

3.17 because 3 is the whole number and 17 out of 100 is 17 hundredths

Solve for c

1.2c = 0.6

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1.2c=0.6
you have to divide 1.2 on both sides. 0.6/1.2=1/2
c=1/2

1.2c=0.6

Divide both sides by 1.2

1.2c/1.2=0.6/1.2

c= 0.5

Check the answer

Replace c by its number

1.2*0.5=0.6

0.6=0.6

So the answer is good

I hope that's help !

How do you solve this system equation using elimination 3x +y = 23
3x - 2y = 8

please show work and the solution to the system for x, y
I have tried and tried can't seem to get it to work out.

Answers

3x +y = 23 this is the same as y=23-3x
3x - 2y = 8 this is the same as 3x/2-8/2=y, which gives you; y=1,5x-4
so;y=23-3xy=1,5x-4
y=y
23-3x=1,5x-4
23+4=1,5x+3x
27=4,5x
27/4,5=x
x=6
the y is:
3*6+y=23
18+y=23
y=23-18
y=5

1) 3x +y=23 try to label them one and two.

2)3x -2y=8 First lets find the x. To do that we have to changed the y,and find the common number fo them.

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1) 3x+y=23 try to times the whole equation number 1) by 4, and equation 2) by 2.

2) 3x-2y=8

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1) 12x+4y=92 That's how the euation should look after you would times it.

2) 6x-4y=16 Then add them.

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12x +6x = 18x ..... 4y+4y_ this won't have to be solved at we only had to times it so we could eliminate does y's as we only wanted to find out x.

92+16=108

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So then we have...

18x = 108 This means we have to divide 108 by 18 to find out x.

108/18 = 6.

x=6.

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To find y we have to do the same method but we have to eliminate x, by findin a common number in x's.

1) 3x+y=23 Try to time the two equations by 2.

2)3x-2y=8

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1) 6x+2y=46 Yoou should get something like that. Then add them.

2) 6x-4y=16

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6x+6x_ we won't gonna add them as we only had to multiply them to get the same answer to eliminate these.

2y+ -4y= -2y ............. 46+16=62

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So it should be: 2y=62

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No we only have to divide 62 by 2, which is 31

so y=31.

Find the angle of elevation from the point on the ground 90 feet from the base of a building that is 200 feet tall

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$Look\ at\ the\ picture.\n\ntg\alpha=(200)/(90)\n\ntg\alpha=(20)/(9)\n\ntg\alpha=2.222...\n\n\alpha\approx66^o$

You didn't say so, but I'm assuming that what you want is the angle of elevation
when you're looking at the top of the building.

Also, since you didn't specify it, we have to assume that you and the building
are on level ground, and we also have to assume that your eye is located at
ground level. In other words, your eye is level with the base of the building.

Now ... The building is perpendicular to the ground. So the building, the line
on the ground from the building to you, and the line of sight from your eye to
the top of the building, form a right triangle.

The angle we need is the angle located at your eye. The line along the ground
from the building to you is the side of the triangle that's adjacent to that angle.
And the building is the side of the triangle that's opposite that angle.

The tangent of the angle is (opposite) / (adjacent) = 200/90 = 2.2222...

Put that number into your calculator, and find the angle whose tangent it is.
(That's called the 'arctangent' of 2.2222, or tan⁻¹(2.2222) .)

The angle is about 65.77 degrees. (rounded)

Solve for x in the equation:3 over 7 x + 5 = 8
— please help i will give brainliest!