Find the value of x in the figure

Mathematics

2 answers:

kvv77 [185]3 years ago

8 0

Answer:

I am 99% sure it's $x = 100$ °, here's why (down)

Step-by-step explanation:

The total is 180°. When adding 57° + 23° = 80°. To get $x$ , you have to subtract 80° from 180°. The difference is 100°, which is the answer of this problem.

Lemur [1.5K]3 years ago

3 0

X= 100°
180° - 57° = 123
x + 23°= 123°
x = 100°

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In a random sample of 16 residents of the state of Washington, the mean waste recycled per person per day was 2.8 pounds with a

kakasveta [241]

Answer: The required confidence interval would be (2.72,2.89)

Step-by-step explanation:

Since we have given that

Mean = 2.8 pounds

Standard deviation = 0.24 pounds

n = sample size = 16

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z=1.341

So, the confidence interval will be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=(2.8\pm 1.341\times \dfrac{0.24}{\sqrt{16}})\\\\=(2.8\pm 1.314\times 0.06)\\\\=(2.8-0.07884,2.8+0.07884)\\\\=(2.72116,2.87884)$