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2 years ago

Which one of the following functions is an exponential decay function?

Mathematics

2 answers:

vekshin12 years ago

7 0

Answer:

Answer D

Step-by-step explanation:

stepan [7]2 years ago

6 0

Answer:

Step-by-step explanation:

Its decaying since its being multiplied by by a number less than 1

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Joy uses 9.5 pints of blue paint and white paint to paint her bedroom walls. 3 5 of this amount is blue paint, and the rest is w

Nana76 [90]

Answer:

6 pints of white paint she used to paint her bedroom walls.

Step-by-step explanation:

Joy uses 9.5 pints of blue paint + white paint.

Joy used 3.5 pints of blue paint.

So, white paint used = total paint - blue paint used

Plug in the known values into the equation.

White paint used = 9.5-3.5 =6 pints

3 0

2 years ago

Homer wants to identify the center and radius of the circle defined by the equation x2 + y2 - 14x +

Klio2033 [76]

Homer has made mistake in step 2

When you complete the square, you need to add the values to both sides of equation

Solution:

Given equation of circle:

$x^2 + y^2 -14x + 2y -25 = 0$

Let us first calculate center and radius and find out where he did the mistake

Step 1:

Group the terms

$x^2 -14x + y^2 + 2y = 25\\\\(x^2 -14x) + (y^2 + 2y) = 25$

Step 2:

$(x^2 -14x + 49) + (y^2 + 2y + 1) = 25 + 49 + 1$

But homers step 2 is:

$(x^2 -14x + 49) + (y^2 + 2y + 1) = 25$

So homer has made mistake in this step

When you complete the square, you need to add the values to both sides of equation

But homer did not add 49 and 1 to right side of equation

Correct steps are:

$(x^2 -14x + 49) + (y^2 + 2y + 1) = 75\\\\(x-7)^2 + (y+1)^2 = 75$

Comparing general equation of circle,

$(x-h)^2 + (y-k)^2 = r^2$

Therefore, center is ( 7, -1) and radius is 8.66

8 0

3 years ago

What area formula does a triangle have?

ANTONII [103]

Answer:

The area of a triangle can be found using:

a=1/2 bh

a=(bh)/2

where b is the base and h is the height

7 0

3 years ago

Read 2 more answers

Shade an equivalent fraction

Rainbow [258]

Answer:

sorry I don’t have a notebook on me right now , hope I could help

Step-by-step explanation:

3 0

3 years ago

Multiply and simplify: x+4/x-5*x-1/x^2+2x-8

____ [38]

Hope it could help u

7 0

3 years ago