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Iteru [2.4K]
3 years ago
10

Please help! I’ll really appreciate it!

Mathematics
1 answer:
Sauron [17]3 years ago
7 0
<span>Part A- Explain why the x-coordinates of the points where the graphs of the equations y=2^-x and y=8^x+4 intersect are the solutions of the equation 2^-x=8^x+4

Because the intersection point has the a unique pair of (x,y) coordinates; such coordinates x,y belong to both equations.

Part B- Make tables to find the solution to 2^-x = 8^x+4. Take the integer values of x between -3 and 3.

x        2^ (-x)                 8^(x + 4) <------ this is how I understand the right side

- 3      2^3 = 8               8^(1) = 8

- 2      2^2 = 4               8^(2) = 64

- 1     2^1 = 2                8^(3) = 512

 0      2^0 = 1                8^(4) =  4,096

=> solution x = - 3

You can continue filling the table for x =1, x = 2 and x = 3, but the solution is already stated x = - 3.

Part C- How can you solve the equation 2^-x=8^x+4 graphically?

Draw the graphs of both equation is the same coordinate system and the solution will be the point where the two curves intersect each other.
</span>
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I need helpppppp asap
user100 [1]

Answer:

graph A

Step-by-step explanation:

When looking at a graph, there are two different axes. The vertical values--marked by the center up/down line--are "y-values"; and this is called the "y-axis"

The horizontal values--marked by the left/right line--are "x-values"; and this is called the "x-axis"

For the x-axis, values to the left side of the origin (the place where the y-axis and x-axis intercept) are smaller than 0--they are all negative values.

Values to the right side of the origin are positive--greater than 0.

For the y-axis, positive numbers are on the top half [once again, the midpoint / 0 is where the two lines are both = to 0; the origin] and negative numbers are on the bottom half.

Ordered pairs (points) are written as (x,y)

(x-value, y-value)

We are looking for a graph that decreases (along the y-axis), hits a point below the origin, and goes flat/stays constant.

When a graph is decreasing (note: we read graphs from left to right), the line of the graph is slanted downwards (it looks like a line going down).

So, if we look at the graphs, we can see Graph A descending, crossing the y-axis {crossing the middle line /vertical line / y-axis} at a value of -7, and then staying constant (it is no longer increasing or decreasing because the y-values stay the same)

hope this helps!!

4 0
1 year ago
Write 2x=y/3-4 in standard form
Sveta_85 [38]
Look in the attached file to see answer

7 0
3 years ago
Read 2 more answers
An artist sells 4 paintings for $20 each,4 sculptures for $60 each, and 4 photographs for $10 each at her art show. The artist s
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The artists made $640 so far

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3 years ago
Which expression is equivalent to the following complex fraction? StartFraction 2 Over x EndFraction minus StartFraction 4 Over
aliina [53]

Answer:

its A

Step-by-step explanation:

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A regular square pyramid just fits inside a cube (the base of the pyramid is congruent to a face of the cube and
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Volume of reg sq. pyramid = vp
vp = 1/3×s^2×h, where s = side and h = height
Volume of cone = vc =1/3×h×pi×r^2
Now we know that h is the same for both, and the cones diameter = s of square base, so radius (r) = 1/2 s
so now vc = 1/3×h×pi×(1/2s)^2
let's remove the same items for both vc and vp
so 1/3 and h
now let's plug an arbitrary number into each:
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So any square pyramid has slightly more volume than the cone
4 0
2 years ago
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