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Paraphin [41]
3 years ago
11

A swimmer covers 180m in 20 seconds. How many metres does she swim in one second?​

Mathematics
1 answer:
mylen [45]3 years ago
6 0

Answer:

She swims 9m in one second

Step-by-step explanation:

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PLEASE ANSWER THESE QUESTIONS!!!!! I WILL MARK YOU AS BRAINLIEST!!!!!! :) :)
Dimas [21]

Answer:

I really don't know how to work this problem sorry. I just wanted to say something so you didn't think that I was Ignoring you

6 0
3 years ago
Is anyone in geometry (10th-grade math)? I need some help
goldenfox [79]

Answer:

angleB = 41.4°

Step-by-step explanation:

✨ Trigonometry✨

cos theta = adj / hyp

theta = inverse-cos adj / hyp

theta = inverse-cos 12 / 16

theta = inverse-cos .75

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5 0
3 years ago
A well respected wild life researcher recently conducted a
Marina CMI [18]

Answer:

Claim : men weigh of wild jackalopes is 69.9

The null hypothesis : H0 : μ = 69.9

Alternative hypothesis : H1 : μ ≠ 69.9

Test statistic = −2.447085

P value = 0.0174

Conclusion :

Fail to Reject the Null hypothesis

Step-by-step explanation:

From the question given :

The claim is that : mean weight of wild jackalopes is still the same as 10 years with a mean weight of 69.9 lbs.

The null hypothesis : H0 : μ = 69.9

Alternative hypothesis : H1 : μ ≠ 69.9

Using calculator :

Sample mean (x) = 66

Sample standard deviation (s) = 12.345

The test statistic t :

(x - μ) / (s/√n)

n = sample size = 60

(66 - 69.9) / (12.345 / √60)

t = −2.447085

P value at α 0.01, df = 59 is 0.0174

Since the p value is > 0.01, the result is not significant at 0.01. Therefore, we fail to reject the Null

7 0
3 years ago
Who can help me on my math I’m failing can y’all please help me on some questions.
Anton [14]

Answer:

7 quarters and 3 dimes

Step-by-step explanation:

7 quarters equal $1.75

3 dimes equal $0.30

If you add them together you get $2.05

3 0
3 years ago
|2x+5| greater than of equal to 7
natta225 [31]

Answer:

x is less than or equal to -6 or x is greater than or equal to 1

5 0
3 years ago
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