Can anyone tell me why?

Mathematics

1 answer:

Rom4ik [11]2 years ago

5 0

Answer:

See the top left picture. the answer is there

Step-by-step explanation:

I will assume big cylinder is A. and small one is B.

Volume A = 424

Volume B = 188

the difference is 424 - 188 = 236.

If you see the top left picture, the side is divided by 2. Left side 188 and right side 188. Next step is, we can see that the shape is only difference at the top (for diameter), so we must slice it diagonally, means we need to divided it again by 2. So the remaining is 188/2 for both left and right.

Now add all the volume together (look at the shape)

Cylinder B + remaining left + remaining right = 188 + 94 + 94 = 306

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F(x)=25x^2-10x+1 what is the the value of the discriminant of f

Elanso [62]

Answer:

Step-by-step explanation:

Quadratic equation

$x=\frac{-b+-\sqrt{b^{2}-4*a*c} }{2*a}$

The discriminant is the part of the quadratic formula within the square root symbol: ${b^{2}-4*a*c}$ . The discriminant indicates if there are two solutions, one solution, or none.

The discriminant can be positive, zero or negative which determines how roots exist for the given quadratic equation.

So, a positive discriminant tell us that the quadratic has two different real solutions.

A discriminant of zero tell us that the quadratic has two real and equal solutions.

And a negative discriminant tell us that none of the solutions are real numbers.

In this case: 25x^2-10x+1=0

We can see that

a= 25 b=-10 c=1

Using: ${b^{2}-4*a*c}$

We have $-10^{2}-4* 25*1 =100-100=0$

the answer is zero, so the quadratic has two real and equal solutions

7 0

3 years ago

1. What is the approximate solution of the linear system represented by the graph below?

nlexa [21]

Answer:

x = 5 and y = 6; that is the (5, 6) (x, y) pair.

Step-by-step explanation:

The graph shows two lines that cross at the point (5, 6) on the plane (see attached image).

This means that the point x=5 and y=6 belongs to both lines (is a solution for both equations representing the lines) and therefore this pair of values is the solution to both equations in the system.