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3 years ago

(PLEASE HELP! WILL MARK BRAINLIEST!!!!)

Mathematics

1 answer:

Delvig [45]3 years ago

5 0

Answer:

false and sum of the three angles of any triangle is equal to 180 degrees.

Step-by-step explanation:

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Give triangle TRY, find TY. Round your answer to the nearest hundredth.

3241004551 [841]

The length of TY is 2.26.

Solution:

In ΔTRY, θ = 37°, Adjacent side = 3.

To find the length of TY.

Using trigonometry identity,

$$\tan\theta=\frac{{opposite}}{{Adjacent}}$

$$\tan37^\circ=\frac{{TY}}{3}$

$$3\tan37^\circ=TY$

$$3\times 0.75355=TY$

$$TY=2.26065$

TY = 2.26

Hence the length of TY is 2.26.

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3 years ago

6 Monica reads 15 pages of a mystery book in 9 minutes. What is

Ivan

Answer:

135

Step-by-step explanation:

15 x 9 = 135

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3 years ago

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The. Approximate value of 200,000×200

SCORPION-xisa [38]

Answer:it would be 40000

Step-by-step explanation:

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3 years ago

Help me with math please

Firdavs [7]

Answer is A..... hope it helps

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3 years ago

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In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2455 subjects randomly select

Genrish500 [490]

Answer: 0.355,0.405)

Step-by-step explanation:

Given : Significance level : $\alpha=1-0.99=0.01$

Number of subjects (n) = 2455

Number of surveys returned = 931

The probability of surveys get return will be :-

$p=\dfrac{931}{2455}=0.379226069246\approx0.38$

The confidence interval for proportion is given by :-

$p\pm z_{\alpha/2}\times\sqrt{\dfrac{p(1-p)}{n}}$

$0.38\pm z_{0.005}\times\sqrt{\dfrac{0.38(1-0.38)}{2455}}\\\\=0.38\pm(2.576)0.0098\\\approx0.38\pm0.025=(0.355,0.405)$

Hence, the 99% confidence interval for the proportion of returned surveys : (0.355,0.405)

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3 years ago