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3 years ago

Plz help im helping my brother :)

Mathematics

2 answers:

likoan [24]3 years ago

7 0

Answer:

Step-by-step explanation:

Tju [1.3M]3 years ago

5 0

Answer:

Step-by-step explanation:

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how long is the arc intersected by a central angle of π/3 radians in a circle with a radius of 6 feet round your answer to the n

riadik2000 [5.3K]

$\bf \textit{arc's length}\\\\ s=r\theta ~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad radians\\ \cline{1-1} r=6\\ \theta =\frac{\pi }{3} \end{cases}\implies s=6\left( \frac{\pi }{3} \right)\implies s=2\pi \implies \stackrel{\textit{rounded up}}{s=6.3}$

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3 years ago

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The picture shows a triangular island:

Rzqust [24]

Answer:

I think the answer is C but I'm not 100% sure

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2 years ago

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Liliana used for dark power crystals to race 14 zombie soldiers she wants to know if she can raise with dark power crystals how

gtnhenbr [62]

So.. Liliana used 4 crystals to race 14 zombie soldiers.

14 / 4 = 3.5. She can race 3.5 zombie soldiers if she uses 1 crystal. So, all you need to do it multiply 3.5 by 10 and you end up with 35.

So, Liliana is able to race 35 zombie soldiers with 10 power crystals.

Glad I could help!

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2 years ago

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50 points!! Please help!! Will mark brainliest and random answers will be reported

Triss [41]

Answer:

In the above figure

both the sides are equal then angle between them will also equal

so,

(2x+2) + (2x+2) + (3x+1) = 180

7x + 5 = 180

7x = 175 

x = 175/7

x = 25

hence angle will (25 *2) +2 =52

other angle is( 25*3)+1 = 76

hope it helps and your day will fine

6 0

2 years ago

A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past

Minchanka [31]

<h2>Answer with explanation:</h2>

Let $\mu$ be the distance traveled by deluxe tire .

As per given , we have

Null hypothesis : $H_0 : \mu \geq50000$

Alternative hypothesis : $H_a : \mu$

Since $H_a$ is left-tailed and population standard deviation is known, thus we should perform left-tailed z-test.

Test statistic : $z=\dfrac{\overlien{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

where, n= sample size

$\overline{x}$ = sample mean

$\mu$ = Population mean

$s$ =sample standard deviation

For $n= 31,\ \sigma=8000,\ \overline{x}=46,800\ \&\ s=46,800$ , we have

$z=\dfrac{46800-50000}{\dfrac{8000}{\sqrt{31}}}=-2.23$

By using z-value table,

P-value for left tailed test : P(z≤-2.23)=1-P(z<2.23) [∵P(Z≤-z)=1-P(Z≤z)]

=1-0.9871=0.0129

Decision : Since p value (0.0129) < significance level (0.05), so we reject the null hypothesis .

[We reject the null hypothesis when p-value is less than the significance level .]

Conclusion : We do not have enough evidence at 0.05 significance level to support the claim that t its deluxe tire averages at least 50,000 miles before it needs to be replaced.

4 0

3 years ago