2 years ago

How do you write 3x to the -5 power using only positive exponents?

Mathematics

1 answer:

Inga [223]2 years ago

4 0

Negative:

(3x)^-5

Positive:

(1/3x)^5

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The center of a circle is (0, -8). The radius is 9. What is the equation of the circle? Select all that apply.

taurus [48]

Answer:

x² + (y + 8)² = 81

Step-by-step explanation:

Centre (h,k) = (0,-8)

radius (r) = 9

(x - h)² + (y - k)² = r²

(x - 0)² + (y + 8)² = 9²

x² + (y + 8)² = 81

8 0

3 years ago

What is the vertex form of y=-2x2+4x + 3?

sukhopar [10]

Answer:

$y=-2(x-1)^2+5$

Step-by-step explanation:

we have

$y=-2x^2+4x+3$

This is the equation of a vertical parabola open downward

The vertex represent a maximum

Convert the quadratic equation into vertex form

step 1

Factor -2

$y=-2(x^2-2x)+3$

step 2

Complete the square

$y=-2(x^2-2x+1)+3+2$

$y=-2(x^2-2x+1)+5$

step 3

Rewrite as perfect squares

$y=-2(x-1)^2+5$ ----> equation in vertex form

The vertex is the point (1,5)

3 0

3 years ago

Simplify all the ratios. Show your work!

Dmitrij [34]

I can help u but just give me 5 mins or 2 to help u :) ill get back to u right away

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3 years ago

Evaluate [(30 + 6) − 32] ÷ 9 ⋅ 2 1.5 6 6.7 10

Andrews [41]

Use PEMDAS:

[(30+6) -3^2] / 9* 2

= (36 -9)/ 9* 2

= 27/9* 2

= 3*2

= 6

The final answer is 6~

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3 years ago

Read 2 more answers

The diameter of a circle is 6 units. What is the radius of the circle?

KengaRu [80]

Answer:

Step-by-step explanation:

The radius is half of the diameter so 6/2 is 3

3 0

2 years ago