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ki77a [65]
3 years ago
8

TEN POINTS!!!! 8^-2 * 8^-9 in exponential form

Mathematics
1 answer:
muminat3 years ago
3 0

Answer:

8^ -11

Step-by-step explanation:

8^-2 * 8^-9

The bases are the same so we can add the exponents

8 ^ (-2+-9)

8^ -11

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Please help mee, (30 points will give brainliest!!!)
Vadim26 [7]

Answer:

-4

+3

12

-0.5, 12.25

x = -0.5

Step-by-step explanation:

The x intercepts are the values of x when y = 0 ie the roots of the equation
-x^2 -x +12 = 0

or

x^2  + x  - 12 = 0

We can re-write the above as:
(x+4) (x-3) = 0
This gives the two roots as x = -4 and x = +3. Leftmost (smallest) root is -4 and rightmost(largest) root is +3

y intercept is when x = 0. Plugging into the original equation, y value at x = 0 is 12

Vertex x value is given by the formula -b/2a where a is the coefficient of x^2 and b the coefficient of x

Here a = -1, b= -1 so vertex x value = - (-1)/(-1).2 = - 1/2 = -0.5

Plugging this value of x into the original function gives the vertex y value
y = - (0.5^{2}) - (-0.5) + 12\\= -0.25 + 0.5 + 12 = 12.25

The line of symmetry is the vertical line corresponding to the vertex x value so line of symmetry is at x = -0.5

The graph of the quadratic function shows these values

3 0
2 years ago
Angle C is an inscribed angle of circle P. Angle C measure (17x-2) and arc AB measure (20x+10). Find X
jeyben [28]
10x + 5 = 16x - 1 
<span>6x = 6 </span>
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5 0
3 years ago
(Writing to Explain) There are 12 plots in a community garden. What Information do you need to know if you wanted to know how mu
USPshnik [31]
You would need to know the length and width of each plot.
3 0
3 years ago
Please tell me y what 6(2y−9)=-42
Bad White [126]

Answer:

y =1

Step-by-step explanation:

6(2y−9)=-42

Divide each side by 6

6/6(2y−9)=-42/6

2y -9 = -7

Add 9 to each side

2y -9+9 = -7+9

2y =2

Divide by 2

2y/2 = 2/2

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4 0
3 years ago
Uhmmmm... yea............ ​
Korvikt [17]

Answer:

You add 12.5+12.5+3.02+3.02 which equals 31.04

Step-by-step explanation:

8 0
3 years ago
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