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3 years ago

Please help me answer these questions if you give an answer you are a lifesaver

Mathematics

1 answer:

il63 [147K]3 years ago

4 0

On Part A you have to subtract $2.39-$1.99. Then in Part B you have to multiply $4.50 by 2. And then I think you have to add $3.79 when u are done multiplying.

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Which expression is equivalent to (r^-7)^8

ahrayia [7]

Answer:

1/r^56

Step-by-step explanation:

Not sure if you did a typo there or what cus 7 x 8 should be 56

Whenever the power of a number is negative, you flip. So r^-7 becomes 1/r^7

Remove the bracket and distribute 8 to the power of 1 and r^7

1 to the power of 8 will still be 1, r^7 x 8 = r ^ 56

6 0

3 years ago

HELP!!! 50 POINTS!!!! a transformation is a _____ to the _____ or _____ of a figure

Temka [501]

Answer:

a transformation is a rotation or reflection  to the position or co-ordinates of a figure

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3 years ago

How to do terrible triangle trouble puzzles??

Marianna [84]

I would start at making it more easy by asking my dad or mom for help

4 0

3 years ago

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Solution to 2x -9 < 7

Yanka [14]

You said 2x - 9 < 7

Add 9 to each side: 2x < 16

Divide each side by 2 : x < 8 .

3 0

3 years ago

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The path of a skateboarder can be modeled by the equation (x – 3)2 = –8(y – 8), where distance is in feet and air resistance is

yKpoI14uk [10]

The maximum height and horizontal distance is required.

Maximum height 8 feet; horizontal distance 16 feet

The given path is $(x-3)^2=-8(y-8)$

If the skateboarder jumps at x = 0 she will land at y = 0. However there will be at horizontal displacement.

$(x-3)^2=-8(0-8)\\\Rightarrow (x-3)^2=8^2\\\Rightarrow x-3=\pm 8\\\Rightarrow x-3=8\\\Rightarrow x=11$

$x-3=-8\\\Rightarrow x=-5$

The distance between -5 and 11 is $11-(-5)=16$

Middle point would be $\dfrac{16}{2}=8$ from $-5$ .

$-5+8=3$

So, $x=3$

The maximum height will be

$(3-3)^2=-8(y-8)\\\Rightarrow y-8=0\\\Rightarrow y=8$

The maximum height is 8 feet and the horizontal distance is 16 feet.

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3 years ago

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