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V125BC [204]
2 years ago
14

Whoever gets it right is gets brainly also e x p la i n

Mathematics
2 answers:
Tema [17]2 years ago
6 0

Answer:

D

Step-by-step explanation:

The answer is D because the opposite of -1.9 is 1.9 and the opposite of 1.9 is -1.9, therefore it's D

Hope this helps and that you have an amazing day! Also can I get brainliest? If not it ok! :)

QveST [7]2 years ago
3 0

Answer:

D. D

Step-by-step explanation:

Where -1.9 is!!

The question states the : opposite of the opposite.

So- we find the opposite of (-1.9) =1.9 and the opposite of that is = -1.9.

So- it is situated at -1.9

Hope this helps!! =)

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Two 5-year girls, Alyse and Jocelyn, have been training to run a 1-mile race. Alyse's 1 mile time A is approximately Normally di
tatyana61 [14]

Answer:

1.7 × 10⁻⁴

Step-by-step explanation:

The question relates to a two sample z-test for the comparison between the means of the two samples  

The null hypothesis is H₀:  μ₁ ≤ μ₂

The alternative hypothesis is Hₐ: μ₁ > μ₂

z=\dfrac{(\bar{x}_1-\bar{x}_2)-(\mu_{1}-\mu _{2} )}{\sqrt{\dfrac{\sigma_{1}^{2} }{n_{1}}-\dfrac{\sigma _{2}^{2}}{n_{2}}}}

Where;

\bar {x}_1 = 13.5

\bar {x}_2 = 12

σ₁ = 2.5

σ₂ = 1.5

We set our α level at 0.05

Therefore, our critical z = ± 1.96

For n₁ = n₂ = 23, we have;

z=\dfrac{(13.5-12)-(0)}{\sqrt{\dfrac{2.5^{2} }{23}-\dfrac{1.5^{2}}{23}}} = 3.5969

We reject the null hypothesis at α = 0.05, as our z-value, 3.5969 is larger than the critical z, 1.96 or mathematically, since 3.5969 > 1.96

Therefore, there is enough statistical evidence to suggest that Alyse time is larger than Jocelyn in a 1 mile race on a randomly select day and the probability that Alyse has a larger time than Jocelyn is 0.99983

Therefore;

The probability that Alyse has a smaller time than Jocelyn is 1 - 0.99983 = 0.00017 = 1.7 × 10⁻⁴.

8 0
3 years ago
Middle School Math Medium Level
Nata [24]

Answer:

Its 0, 1.

Step-by-step explanation:

ItsQuipo on yt

7 0
2 years ago
if you’re using the inspection method, what constant term would you need in the numerator of this rational expression for to be
Fed [463]
Here you go hope this helps

4 0
3 years ago
Ignacio is going on vacation. He needs to drive 520 miles in 8 hours. What is his average speed in miles per hour?​
Gnom [1K]

Answer:

65 miles per hour

Step-by-step explanation:

520 divided by 8

8 0
2 years ago
Read 2 more answers
2) The two rectangles shown are similar.
Citrus2011 [14]

Answer:

6\ cm

Step-by-step explanation:

First Rectangle:

length(l_1)=24\ cm\\\\Width(b_1)=9\ cm

Second Rectangle:

length(l_2)=16\ cm\\\\Let\ Width=b_2\ cm

Since\ these\ two\ rectangles\ are\ similar\\\\\frac{l_2}{l_1}=\frac{b_2}{b_1}\\\\\frac{16}{24}=\frac{b_2}{9}\\\\16\times 9=24\times b_2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ cross\ multiplication\\\\b_2=\frac{16\times 9}{24}\\\\b_2=6\ cm

5 0
3 years ago
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