3 years ago

What is the area of a triangle that has a 55 degree angle and side lengths of 3 and 7?

Mathematics

1 answer:

sergey [27]3 years ago

6 0

Answer: A≈8.6 is the answer

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Please help me on one math question thanks !

lina2011 [118]

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Step-by-step explanation:

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3 years ago

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Can someone PLEASE help with this one question!?

Vikentia [17]

Answer:

x^2= 25

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3 years ago

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27^x = 9^x − 4 Question 1 options: x = 8 x = 4 x = −4 x = −8

Mariulka [41]

Answer:

x = -8

Step-by-step explanation:

Given the equation:

$27^x=9^{x-4}$

Note that

$27=3^3\\ \\9=3^2,$

then

$27^x=(3^3)^x=3^{3x}\\ \\9^{x-4}=(3^2)^{x-4}=3^{2(x-4)}$

Rewrite the equation as

$3^{3x}=3^{2(x-4)},$

then

$3x=2(x-4)\\ \\3x=2x-8\\ \\3x-2x=-8\\ \\x=-8$

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4 years ago

What's better for homework at 4:30 p.m. she finished at 5:05 p.m. how many seconds does it take her to finish her homework?

Leto [7]

It took 2100 seconds for her to complete her homework.

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3 years ago

Brent checks the sales records for a random sample of 16 days and finds the mean number of gallons sold is 150 gallons per day;

Basile [38]

Answer:

[143.61, 156.39]

Step-by-step explanation:

Because the population standard deviation is not available AND the sample size is less than 31, we can use a t procedure here.

Plug these values into your calculator:

Sample mean = 150

Sample size = 16

Standard deviation = 12

Confidence level = 95% = 0.95

and get [143.61, 156.39] as your confidence interval

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2 years ago