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2 years ago

20 is 50% of what base

Mathematics

1 answer:

Tresset [83]2 years ago

5 0

The base would be 40

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I need to know 5.08x0.26

navik [9.2K]

Answer:

1.3208

Step-by-step explanation:

3 0

2 years ago

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How do i do this question y=-1/2x-2 i am suppoted to graph it

inysia [295]

No your supposed to do the math and cancel out each nunber until you find y

8 0

2 years ago

Factor the following Polynomials 2x2 + 5x + 2

Leokris [45]

Answer:

Step-by-step explanation:

Find the multiples of 2x^2 and 2

for 2x^ you get 2,1 but they need to have x to get x^2 so; (2x and x)=2x^2

for 2 you get 2,1 (2x1)=2

Because your equation has a 5x and no negatives you know that your factors need to be positive.

(2x+1)(x+2)

when you multiply these you get

2x^2+4x+x+2 (remember 2x multiplies with everything inside (x+2) = 2x^2+4) and so on for the x (x+2) =x+2 )

Then you combine like terms 4x+x=5x

and those are the only like terms available and you get

2x^2+5x+2

Hope it helped

3 0

2 years ago

4 A curve has equation y=x^3 - 2x² +5. Find the coordinates of its two stationary points.

vodomira [7]

Answer:

Stationary points are (0, 5) and (4/3, 103/27)

Step-by-step explanation:

At stationary point (turning point), dy/dx :

$y = {x}^{3} - 2 {x}^{2} + 5 \\ \frac{dy}{dx} = 3 {x}^{2} - 4x \\ \\ \frac{dy}{dx} = x(3x - 4)$

but dy/dx = 0:

$x(3x - 4) = 0 \\ either \: x \: is \: 0 \: and \: (3x - 4) = 0 \\ x = 0 \\ and \\ 3x - 4 = 0 \\ x = \frac{4}{3}$

let y = x³ - 2x² + 5:

$when \: x \: is \: 0 \\ y = 5 \\ when \: x \: is \: \frac{4}{3} \\ \\ y = {( \frac{4}{3}) }^{3} - 2 {( \frac{4}{3} )}^{2} + 5 \\ \\ y = \frac{103}{27}$

5 0

2 years ago

What are the solution(s) to the quadratic equation 40 - x2 = 0?

kakasveta [241]

Answer:

±2sqrt(10)

Step-by-step explanation:

40 - x^2 = 0

Add x^2 to each side

40 -x^2 + x^2 = x^2

40 =x^2

Take the square root of each side

±sqrt(40) =sqrt(x^2)

±sqrt(4)sqrt(10) =x

±2sqrt(10) =x

4 0

2 years ago