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k0ka [10]
3 years ago
14

(2-4d)(2+4d)=0 Help please, Its the 0 property

Mathematics
1 answer:
lianna [129]3 years ago
4 0

Answer:

d1=-1/2,d2=1/2

Step-by-step explanation:

hope this helps

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Circle Q is centered at the origin with radius r. Point P(x, y) lies on circle Q. Make a conjecture. How can you find an equatio
salantis [7]

Answer:

The relation x^{2} +y^{2} =r^{2} is explained below.

Step-by-step explanation:

P(x, y) is a point on the circle. Q is the origin. Join PQ.

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Therefore, PQ = r

Draw PS perpendicular to the x-axis.

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Sally has twice as many dimes as nickels. The total value is $3.50 how many nickels and dimes does she have?
Murljashka [212]
D=2n
.05n+.1d=3.5
I multiplied the nickels and dimes by these values because that is their actual monetary value 
.05n=3.5-.1d
multiply everything by 20
n=70-2d
d/2=70-2d
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checking this answer 
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3 years ago
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How do you find the parameterization of a helix?
Marina CMI [18]

Answer:

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\left\{\begin{array}{l}x=r\cos t\\ \\ y=r\sin t\\ \\z=at\end{array}\right.,

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What is the decimal expansion for 12 8/9 ​?
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Answer:

The decimal form of the fraction is 12.88...

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