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zalisa [80]
3 years ago
12

PLZ HELP

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
8 0

y = -7/6x - 8/3

y=mx+b

m is also the slope

b= y-intercept

m=-7/6

y-intercept=-8/3

Answer:

A. M = -7/6

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Solve the equation x/2=x/3+1/2​
Mice21 [21]

Answer: x=3

Step-by-step explanation:

Move all x terms to the same side- x/2-x/3-1/2

Multiply to get common denominator- 3x/6-2x/6=1/2

Subtract 3x/6 and 2x/6 - x/6=1/2

Simplify - x=3

7 0
3 years ago
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What is f=kry, for y
geniusboy [140]
F = kry

f/kr = y

y = f/kr

Answer: y = f/kr

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7 0
3 years ago
A sector of a circle has a central angle of 45 . Find the area of the sector if the radius of the circle is 15 cm.
prohojiy [21]

Answer:

A = 28.125 * pi cm^2

A = 88.357  cm^2


Step-by-step explanation:

Area of a sector is 1/2 r^2 theta  where theta is in radians

convert 45 degrees to radians

theta = 45 * pi/180 = pi/4

A = 1/2 * 15^2 * pi/4

A =1/2 * 225 * pi/4

A = 28.125 * pi cm^2

A = 88.357  cm^2


6 0
3 years ago
Determine if the graph is symmetric about the x-axis, the y-axis, or the origin.<br> r = 9 sin 7θ
boyakko [2]

Answer:

The given function symmetric about the y-axis.

Step-by-step explanation:

The given function is

r=9\sin 7\theta                .... (1)

1. Symmetry about the x-axis: If the point (r, θ ) lies on the graph, then the point  (r,-θ ) or (-r, π - θ ) also lies on the graph.

2. Symmetry about the y-axis: If the point (r, θ ) lies on the graph, then the point (r,π - θ ) or (-r, -θ ) also lies on the graph.

3. Symmetry about the origin: If the point (r, θ ) lies on the graph, then the point (-r, θ ) or (r, π + θ ) also lies on the graph.

Put (r, -θ ) in the given function.

r=9\sin 7(-\theta)=-9\sin 7\theta=-r\neq r

Therefore it is not symmetric about x-axis.

Put (-r, -θ ) in the given function.

-r=9\sin 7(-\theta)=-9\sin 7\theta=-r

Therefore it is symmetric about y-axis.

Put (-r,θ ) in the given function.

-r=9\sin 7(\theta)=r\neq -r

Therefore it is not symmetric about the origin.

3 0
3 years ago
there are about 100 million smartphones in the U.S. your teacher has one smartphone. what share of US smartphones does your teac
barxatty [35]
100 000 000 =  10^{8}

\frac{1}{100 000 000} =  10^{-8}
3 0
3 years ago
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