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Serga [27]
3 years ago
6

QUIZ

Mathematics
1 answer:
Dominik [7]3 years ago
7 0

Answer:

C

Step-by-step explanation:

O x² + 9x -3x – 27 = (x + 9)(x – 3)

x² + 6x - 27 = (x + 9)(x - 3)

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An observer stands 25 feet from the base of a flagpole and watches a flag being lowered at a rate of 5 ft/sec. Determine the rat
Sedaia [141]

Answer:

0.1 rad/s

Step-by-step explanation:

Since the distance from or to the flagpole is not given, I will assume. And my assumption is 50 ft

Now, the elevation angle A = 45 degrees, converting to radians, we have π/4 radians

Remember that the tan of an angle is OPP/HYP, and so

tan A = h/25, on differentiating, we have

d tan A/dA = sec^2 A = (1/25) dh/dA

Next, we have

25 sec^2 A * dA/dt= dh/dt = 5

Making dA/dt the subject of formula, we have

dA/dt = (1/5) cos^2 A

but cos^2 A from trigonometry = 1/2, this means that

dA/dt = .1 radians/second

If you want to convert to degrees, your have

.1 Rad/s( 180 deg/rad) = 18 degrees/second

3 0
2 years ago
Find the equation in slope-intercept form (10,4) that is perpendicular to y=5x-3
TEA [102]
Perpendicular equation: y=-1/5x + 6
7 0
2 years ago
Which point on the number line is at 58/100
liberstina [14]

Answer:

R

Step-by-step explanation:

if you look at it 0 is the first one then count up by tens Q would 48 because it’s before 50 so 50 is right next to Q so then R is before 60 and after 50 so R is 58/100

8 0
2 years ago
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Solve for x: −2(x + 3) = −2(x + 1) − 4
mash [69]
-2(x + 3) = -2(x + 1) - 4
-2x - 6 = -2x - 2 - 4
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0x = 0

x = unknown
4 0
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Please help me on this question?
NeTakaya
Four times fifteen plus twenty in parentheses
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