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lara [203]
4 years ago
8

Please help !!!!!!!!!!!!

Mathematics
1 answer:
Levart [38]4 years ago
3 0

Answer:

a=-2

Step-by-step explanation:

If a line segment has one endpoint on the line y=x, then its coordinates are (b,b). The first endpoint of the segment is at point (a,0). We can find the coordinates of the midpoint of this segment as the average value:

x_{\text{midpoint}}=\dfrac{x_{\text{first endpoint}}+x_{\text{second endpoint}}}{2},\\ \\y_{\text{midpoint}}=\dfrac{y_{\text{first endpoint}}+y_{\text{second endpoint}}}{2}.

Thus,

2019=\dfrac{a+b}{2},\\ \\2020=\dfrac{0+b}{2}.

From the second equation

b=2\cdot 2020=4040.

Substitute it into the first equation:

a+4040=2\cdot 2019,\\ \\a=4038-4040=-2.

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Is π^2 greater or less than 7.2?
STatiana [176]

Answer:

less than

Step-by-step explanation:

Well pi divided by 2 is 1.57 and you need to figure out if 7.2 is greater than or less than pi^2 aka 1.57 so theres your ansewr

4 0
2 years ago
Read 2 more answers
190 + 200 its IMPOSSIBLE
nirvana33 [79]

Answer: 390

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is the value of y? ​
alexira [117]

9514 1404 393

Answer:

  y = 8√3

Step-by-step explanation:

In the 30°-60°-90° "special" triangle, the ratio of sides lengths is ...

  1 : √3 : 2 = 8 : y : hypotenuse

In order for these ratios to be equal, we must have ...

  y = 8√3

__

If you want to solve this using your trig skills, you recognize that ...

  Tan = Opposite/Adjacent

  tan(30°) = 8/y

  y = 8/tan(30°) . . . . where tan(30°) = 1/√3

  y = 8√3

4 0
3 years ago
The diameter of a iron sphere is 8 cm. It is beaten and drawn into a wire with a diameter of 2 mm. Find the length of the wire.
djyliett [7]

Answer : The length of the wire is, 8533 cm

Step-by-step explanation :

As the iron sphere is beaten and drawn into a wire. That means, their volume will be equal.

Volume of iron sphere = Volume of cylindrical wire

The formula will be:

\frac{4}{3}\pi r_1^3=\pi r_2^2h

where,

r_1 = radius of sphere = \frac{Diamtere}{2}=\frac{8cm}{2}=4cm

r_2 = radius of cylindrical wire = \frac{Diamtere}{2}=\frac{2mm}{2}=1mm=0.1cm

h = height of cylindrical wire or length of wire

Now put all the given values in the above formula, we get:

\frac{4}{3}\pi r_1^3=\pi r_2^2h

\frac{4}{3}\times r_1^3=r_2^2h

\frac{4}{3}\times (4)^3=(0.1)^2h

h=8533.33cm\approx 8533cm

Therefore, the length of the wire is, 8533 cm

6 0
4 years ago
Pls help me guys!<br> And Pls explains how you got the answer!<br> Thanks :D
ollegr [7]

Answer:

Its 8

Step-by-step explanation:

I know this because 8 is the only number they give you the other numbers they dont suply. Ps dont use my spelling and you might want to come up with a better answer. good luck

6 0
4 years ago
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