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Kay [80]
3 years ago
12

Use the formulas for a cylinder: r = 2 h = 6 SA = ?

Mathematics
1 answer:
IrinaK [193]3 years ago
4 0
SA=2 \pi rh+2\pi r^{2}
SA=2 \pi (2)(6)+2\pi  (2)^{2}
SA=24\pi + 8\pi
SA=32\pi
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Writing in Slope-Intercept Form, 4 Ways <br><br> (3, 2) &amp; (-3, -4)
andre [41]

Answer:

y = x +1

Step-by-step explanation:

y= mx + b

where m is the slope and b is the y-intercept

m = (y2-y1)/ (x2-x1) = 2+4 / 3+3 = 6/6 = 1

from the point -slope equation we have

y-y1 = m* (x-x1)

y-3 = 1* ( x-2)

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3 years ago
Which option correctly represents the graph of f(x) = 2x2 -3 and describes
Naya [18.7K]

Answer:

even

Step-by-step explanation:

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What is an equation of the line that passes through the points (-8, 2) and (-4, -3)?
denpristay [2]

Answer:

y = (-6/13)x + (4/13).,

Step-by-step explanation:

the equation of the line is:

y = mx + b, where "m" is the slope and "b" gives the y-intercept

m = (y2 - y1)/(x2 - x1)

m = (-2 - 4)/(5 - (-8))

m = -6/13

y = (-6/13)x + b

the line passes through the point (-8,4) means that for x = -8, y = 4

4 = (-6/13)(-8) + b

b = 4 - (-6/13)(-8)

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the equation of the line that passes through the points (-8,4) and (5,-2) is:

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5 0
3 years ago
A person who is 6ft tall walks away from a streetlight. When the person is 15 feet away from the light, the tip of his shadow is
Citrus2011 [14]
We essentially have a ratio here:
\frac{shadow}{actual}

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\frac{5}{6}=\frac{20}{h}
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3 years ago
A radio is being discounted 40%. If the sale price of the radio is $31.02, what was the original price of the radio?
kobusy [5.1K]

Answer:

$51.70 is the original price

Step-by-step explanation:

Step 1:

Turn 40% into a decimal which makes it 0.40

ex. 50% would be 0.50, 5% would be 0.05 etc.

Step 2:

Put the numbers into this formula: Original Price (x) - Percent Off times Original Price = Sales Price

x - 0.40x = 31.02  this is basically 1x - 0.40x = 31.02 so,

Solving the left side of our equation gives us 1x - 0.40x = 0.60x

so now you have: 0.60x = 31.02

Step 3:

Divide both sides by 0.60 which gets x by itself and gives us the original price which is $51.70

8 0
3 years ago
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