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abruzzese [7]
3 years ago
8

What are the solutions to the equation? 3x2+6x=45

Mathematics
1 answer:
daser333 [38]3 years ago
4 0

Answer:

x = 3, -5

Step-by-step explanation:

hope this helps plz give brainiest

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Answer: 1.55, and -0.83

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Jane has 6 red marbles. 4 green marbles, and 2 black marbles in a bag. What is the probability of ramdomly pulling out a green m
fomenos

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4 0
3 years ago
WILL MARK BRAINLIEST!!! Find the fifth roots of 243(cos 240° + i sin 240°).
Snowcat [4.5K]

Answer:

<h2>3(cos 336 + i sin 336)</h2>

Step-by-step explanation:

Fifth root of 243 = 3,

Suppose r( cos Ф + i sinФ) is the fifth root of 243(cos 240 + i sin 240),

then r^5( cos  Ф  + i sin  Ф )^5 = 243(cos 240 + i sin 240).

Equating equal parts and using de Moivre's theorem:

r^5 =243  and  cos  5Ф  + i sin  5Ф = cos 240 + i sin 240

r = 3 and  5Ф = 240 +360p so Ф =  48 + 72p

So Ф = 48, 120, 192, 264, 336  for   48 ≤ Ф < 360

So there are 5 distinct solutions given by:

3(cos 48 + i sin 48),

3(cos 120 + i sin 120),

3(cos 192 + i sin 192),

3(cos 264 + i sin 264),

3(cos 336 + i sin 336)

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2 years ago
Convert 29 inches to feet. Round answers to the nearest tenth
Bess [88]
29 ÷ 12 = 2.41667
Your answer is 2.4 feet
7 0
3 years ago
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