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nikklg [1K]
3 years ago
14

-2/3x + 2.8 = -8.2 what is x

Mathematics
1 answer:
JulsSmile [24]3 years ago
6 0
-2/3x + 2.8 = -8.2 what is x
Add 2.8 on both side of the equation
-2/3x=-11
Divide both side by -2/3
x=33/2

Check: -2/3(33/2)+ 2.8 = -8.2
-11+2.8=-8.2
-8.2=-8.2

Answer is x=33/2
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15: 15, 30, 45, 60, 75, 90

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How to find the average squared distance between the points of the unit disk and the point (1,1)
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\mathbf p(r,\theta)=(r\cos\theta,r\sin\theta)

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(x-1)^2+(y-1)^2=(r\cos\theta-1)^2+(r\sin\theta-1)^2
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5 0
2 years ago
Please help!!! I will mark someone brainliest!
valina [46]

Answer:

a = 8, b = \frac{3}{2}

Step-by-step explanation:

Given the exponential function

f(x) = ab^{x}

To find a and b use the given coordinate points on the graph

Using (0, 8 ), then

8 = ab^{0} [ b^{0} = 1 ] , then

a = 8

f(x) = 8b^{x}

Using (2, 18 ) , then

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\frac{18}{8} = b² , that is

b² = \frac{9}{4} ( take the square root of both sides )

b = \sqrt{\frac{9}{4} } = \frac{3}{2}

Thus

f(x) = 8(\frac{3}{2}) ^{x}

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