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3 years ago

Name a semicircle for circle O.A) NQPB) MQNC) MPQD) RPQ

Mathematics

2 answers:

blagie [28]3 years ago

7 0

Answer:

Step-by-step explanation:

A semicircle is half the circle and is the region enclosed between a diameter and the arc subtending the diameter.

In this case MQN is a semicircle → B

Reika [66]3 years ago

3 0

i think the answer is MQN

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Which sequences of transformation applied to shape 1 prove that shape 1 is similar to shape 2

stellarik [79]

All it did was shrink in size and move to the square diagonal from it

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2 years ago

The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam

irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)$

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

$\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)$

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

4 0

3 years ago

Metodo igualacion A) x+ y = 12 B) x - y = 4 ?

Olenka [21]

<span>No sé la forma correcta de hacerlo, pero encontrar conjuntos de dos números que pueden igualar 12, luego encontrar cuál de los encaja en la segunda ecuación correctamente.</span>

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3 years ago

Simplify -16/24 pleasee

melamori03 [73]

Answer:

-2/3

Step-by-step explanation:

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3 years ago

Read 2 more answers

I really need help please

Leokris [45]

Answer:

So we have two given angles- 31* and 43*.

First we add those together.

31* + 43* = 74*

Then, we subtract that amount from 180*

180* - 74* = 106*

106* is the missing angle.

x106* - 31* = 75*

x106* + 43* = 149*

~Hope this helps~

6 0

2 years ago