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lyudmila [28]
3 years ago
7

What is the positive solution to the equation 0=-x^2+2x+1?

Mathematics
1 answer:
Hatshy [7]3 years ago
3 0

Answer: x^2-2x-1

Step-by-step explanation:

0=x^2+2x+1

x^2-2x-1

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Elephant eats 250 pounds of food every day how many days would it take an elephant to eat a ton of food
ankoles [38]
1 ton= 2,000 pounds

250 x 8 = 2,000 

final answer: it would take the elephant 8 days to eat a ton of food

*HOPE I HELPED!*
5 0
3 years ago
Solve for x:<br> 4(1 – x) + 2 x = -3( x + 1)
valentinak56 [21]

Answer:

<u>4(1 – x) + 2 x = -3( x + 1)</u>

first do 4 time 1= 4

then do 4 times x =4x

now the equation should look like this

4-4x+2x=-3(x+1)

then do the other side of the equation

-3(x+1)

=-3x-3

Now collect the like terms:

-4x-2x

now the equation should look like this

4-2x=-3x-3

now add 3x add on both sides

4-2x+3x=-3

put the 4 on the other side

-2x+3x=-3-4

now again collect the like terms (-2x+3x=1 which is just x and -3-4 =-7)

x=-7

answer

x=-7

3 0
3 years ago
Read 2 more answers
The radii of Earth and Pluto are 6,371 kilometers and 1,161 kilometers, respectively. Approximately how many spheres the size of
antoniya [11.8K]
The volume of a sphere is (4/3) (pi) (radius cubed).

The volume of one sphere divided by the volume of another one is

 (4/3) (pi) (radius-A)³ / (4/3) (pi) (radius-B)³

Divide top and bottom by (4/3) (pi) and you have     (radius-A)³ / (radius-B)³
and that's exactly the same as
                                                         ( radius-A / radius-B )  cubed.

I went through all of that to show you that the ratio of the volumes of two spheres
is the cube of the ratio of their radii.

Earth radius = 6,371 km
Pluto radius = 1,161 km

Ratio of their radii = (6,371 km) / (1,161 km)

Ratio of their volumes =  ( 6,371 / 1,161 ) cubed = about <u>165.2</u>

Note: 
I don't like the language of the question where it asks "How many spheres...".
This seems to be asking how many solid cue balls the size of Pluto could be
packed into a shell the size of the Earth, and that's not a simple solution.
The solution I have here is simply the ratio of volumes ... how many Plutos
can fit into a hollow Earth if the Plutos are melted and poured into the shell.
That's a different question, and a lot easier than dealing with solid cue balls.
4 0
4 years ago
Read 2 more answers
Which of the following combinations of side lengths will form a triangle with vertices X, Y, and Z?
Vikentia [17]

It should be C I’m not 100% shor tho

3 0
3 years ago
Hi hope u have a good day tell me a joke plz and whats 5+5
a_sh-v [17]

Answer

55

Step-by-step explanation:

5 + 5 = 55

7 0
3 years ago
Read 2 more answers
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