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Kobotan [32]
4 years ago
7

How to solve this proof

Mathematics
1 answer:
iris [78.8K]4 years ago
4 0

they are Acute angles because is is smaller than 90 degrees

obtuse = >90 degrees

right angle = 90 degrees

Acute = < 90 degrees


I hope this helps:)

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Step-by-step explanation:

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30 + (1/6)^-2 - (-52) What is the value?<br> Is 62 correct?
slava [35]

Answer:

No, the value is 118

Step-by-step explanation:

30+( 1/ 6 )^−2−(−52)

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MA = (4x - 2) and mzB = (11x + 17)°. Find x if the angles are
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yKpoI14uk [10]

Answer:

La cantidad de dinero adeuda al final de los dos procesos es $1450

Step-by-step explanation:

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La cantidad pagada por la ropa = $2600

La cantidad prestada a un amigo = $650

La cantidad adeuda por teléfono celular durante 3 meses = $250

Deje que 'C', represente la suma de las transacciones anteriores, tenemos;

∴ C = 2,000 - 2,600 - 650 - 200 = -1,450

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Por lo tanto, al final de los dos procesos, la cantidad de dinero adeuda es C = $1,450

-

3 0
4 years ago
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
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