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solmaris [256]
3 years ago
13

Multiply by 6

Mathematics
1 answer:
IRISSAK [1]3 years ago
5 0

Answer: D (1,0): (6,5); (36,10): (216,15)

Step-by-step explanation:

Because 1x6=6 0+5=5

                6x6=36 5+5=10 ect.

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The percent decrease of an item that dropped in price from $50 to $43 is _____.
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Hopefully I’m correct but I think it is 7% because 50 -43 equals 7%
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3 years ago
A radioactive substance decays exponentially: The mass at time t is m(t) = m(0)ekt, where m(0) is the initial mass and k is a ne
velikii [3]

Answer:

M = 1/0.000121 = 8264.5 years

Step-by-step explanation:

M = − k ∫∞₀ teᵏᵗdt

To obtain this mean life, we'll use integration by parts to integrate the function ∫ teᵏᵗdt

∫udv = uv - ∫ vdu

u = t

du/dt = 1

du = dt

∫ dv = ∫ eᵏᵗdt

v = eᵏᵗ/k

∫udv = ∫ teᵏᵗdt

uv = teᵏᵗ/k

∫ vdu = eᵏᵗ/k

∫ teᵏᵗdt = (teᵏᵗ/k) - ∫eᵏᵗ/k

But, ∫eᵏᵗ/k = (1/k) ∫eᵏᵗ = (1/k²) eᵏᵗ = eᵏᵗ/k²

∫ teᵏᵗdt = (teᵏᵗ/k) - eᵏᵗ/k²

The rest of the calculation is done on paper in the image attached to this question

3 0
3 years ago
Find the axis of symmetry and what direction the parabola opens.<br> -1/4(y+4)=(x-3)²
MariettaO [177]
First, convert the equation to the standard equation of a parabola.
-1/4(y+4)=(x-3)^2     ---multiply -4 on both sides   
y+4=-4(x-3)^2           ---subtract 4 on both sides
y=-4(x-3)^2-4
From the equation, we know that the parabola was moved by 3 to the right, because of (x-3)^2. So the axis of symmetry is x=3. Now look at the number in front of (x-3)^2. It is -4. Since it is negative, the parabola opens downwards. 

7 0
3 years ago
Read 2 more answers
20 points to help with this
Vikentia [17]

Answer:

Help what?

Step-by-step explanation:

6 0
2 years ago
Please help me! Given triangle ABC with A(-4,-2), B(4,4), and C(18,-8) write the equation for the line containing the perpendicu
Aleks [24]
On a phone here and no access to paper but you must first find the midpoint of AC which is the average of the coordinates. The perpendicular bisector will have a gradient that multiplies by AC's gradient to make -1. This will obviously pass through its mid point so as long as you know how to use y=mx+c you should be good.
5 0
3 years ago
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