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algol [13]
3 years ago
5

True or False: The value of r represents the reference angle when plotting a point in polar coordinates.

Mathematics
1 answer:
timama [110]3 years ago
4 0
<span>The value of r represents the reference angle when plotting a point in polar coordinates.
False
</span>
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A stapes bone has a mass of about 4.27mg.round this number to the nearest hundredth of a milligram ,the nearest of a tenth of a
hammer [34]

round to the nearest

hundredth of milligram :  4.27

tenth of milligram: 4.3

milligram : 4

8 0
3 years ago
The length of AB is 9 centimeters. A dilation with a scale factor of 2 is applied to AB. What is the length of the image AB afte
OLEGan [10]

Answer:

18cm

Step-by-step explanation:

Given:

- The length of AB is 9 centimeters

- A dilation with a scale factor of 2

The length of the image AB after the dilation is applied:

9 x 2 = 18

dilation is used to make an image or in this case AB, with a scale factor of 2 means that its doubling in size. If the scale factor was 1/2 that it would be decreasing in size since it will be half of the original size

5 0
2 years ago
X²+8x-84=0 <br><br>Formúla General ​
Brums [2.3K]

Answer:

                x_{1} =-14\\\\x_{2} =6

Step-by-step explanation:

x^{2} +8x-84=0\\\\x=\dfrac{-b \pm \sqrt{b^{2}-4ac } }{2a} \\\\a=1; \: \: b=8; \: \: c=-84\\\\x=\dfrac{-8 \pm \sqrt{8^{2}-4 \cdot 1 \cdot (-84) } }{2 \cdot 1}=\dfrac{-8 \pm \sqrt{400 } }{2}=\dfrac{-8 \pm20}{2} =-4 \pm 10\\\\x_{1} =-14\\\\x_{2} =6

8 0
3 years ago
Please help with questions 1 2 3 and 4 thank you
VikaD [51]
I believe that number one is 4<span />
6 0
3 years ago
Read 2 more answers
On top of a hill, a rocket is launched from a distance 80 feet above a lake. The rocket will fall into the lake after its engine
Free_Kalibri [48]
The maximum height is 144 feet.

The maximum height is the y-coordinate of the vertex.  To find the vertex, we first use x = -b/2a.  For our information, that is x=-64/2(-16) = -64/-32 = 2.

Now we substitute this into the equation:
y = -16(2²) + 64(2) + 80 = -64 + 128 + 80 = 144
3 0
3 years ago
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