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leonid [27]
3 years ago
7

Which object has the mass of about one gram

Mathematics
2 answers:
Phantasy [73]3 years ago
3 0
A nickel has the mass of one gram. Objects that take up space and have mass are called matter
Colt1911 [192]3 years ago
3 0
Need options but an option might be a paperclip, where that would be the answer.
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What is the polar form of Negative 9 StartRoot 3 EndRoot + 9 i?
kondor19780726 [428]

Answer:

Step-by-step explanation:

In the rectangular complex number -9√3 + 9i, which has a standard form a + bi, the a = -9√3 and the b = 9. We need this in polar form (r, θ) where

r=\sqrt{a^2+b^2} and filling in:

r=\sqrt{(-9\sqrt{3})^2+(9)^2 } (notice we do not put the i in there with the 9).

r=\sqrt{243+81} so

r = 18. Now let's move on to the angle, which is a little more difficult. The angle is found in the inverse tangent ratio:

tan^{-1}(\frac{b}{a}) so filling that in, we have:

tan^{-1}(\frac{9}{-9\sqrt{3} })=\frac{1}{-\sqrt{3} } Since tangent is the side opposite over the side adjacent, y is positive and x is negative in the second quadrant. This is a 30 degree angle in QII, which has a reference angle of 150 degrees. This angle in radians is \frac{5\pi}6}, so the polar form of that number is (18, \frac{5\pi}{6})

7 0
3 years ago
Let f(x)=14/7+2e^−0.6x . What is f(3) ? Enter your answer, rounded to the nearest tenth, in the box.
Gelneren [198K]

Answer:

f(3)=1.9

Step-by-step explanation:

we have

f(x)=\frac{14}{7+2e^{-0.6x}}

we know that

f(3) is the value of the function for the value of x equal to 3

so

substitute the value of x=3 in the function

f(3)=\frac{14}{7+2e^{-0.6(3)}}=1.9

5 0
3 years ago
The coordinates of an ordered pair have opposite signs. In which quadrant(s) must the ordered pair lie? Explain.
rusak2 [61]
Quadrant 2 or 4. All points in quadrant 1 are both positive, all points in quadrant 3 are both negative.
4 0
3 years ago
Does the rule y=2•4^x represent an exponential function? Explain.
Andre45 [30]

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3 0
3 years ago
Help pls if someone could explain how to do it (or just do it) that would be great
Drupady [299]

Answer:

okay for #2 do 3 times 3.14 divided by 4

Step-by-step explanation:

do that and tell me what you get

8 0
3 years ago
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