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KiRa [710]
2 years ago
13

I need HELPPP!!!!! Pls

Mathematics
1 answer:
Schach [20]2 years ago
3 0
This was written using the associative property.
(7+5) +2 equals 12+2 which equals 14.
7 +(5+2) equals 7+7 which equals 14.
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2/5of a number is 80. What is 34of the same number?
Masja [62]

Answer:

150

Step-by-step explanation:

First you have to find what number 80 is 2/5 of, to do this do the reciprocal of 2/5 which would be 5/2. Multiply 80 by 5/2 and you'll get 200, then find what 3/4 of 200. Multiply 200 by 3, then divide by 4 to get the answer of 150.

3 0
3 years ago
How do you find the parameterization of a helix?
Marina CMI [18]

Answer:

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

Step-by-step explanation:

A <u>helix</u> is a curve for which the tangent makes a constant angle with a fixed line. The shortest path between two points on a cylinder (one not directly above the other) is a fractional turn of a helix, as can be seen by cutting the cylinder along one of its sides, flattening it out, and noting that a straight line connecting the points becomes helical upon re-wrapping (see attached diagram for helix).

The parametrization for the helix is

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

where r is the radius of the helix, a is the constant, and t\in [0,2\pi ) is the parameter

7 0
4 years ago
Use the substitution method to solve this system of linear equations y-2x=6 x=7
-Dominant- [34]

Answer:

x≈1.166666667

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Step-by-step explanation:

8 0
3 years ago
Help anyone? Please
Alex787 [66]

I wanna say A. y = 3x + 5    y= 1/2x + 2 but I really am not sure

Hope that I kinda helped

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3 years ago
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bearhunter [10]
I got y=2/5x+31/5 as the answer
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3 years ago
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