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Komok [63]
3 years ago
8

Name

Mathematics
1 answer:
kozerog [31]3 years ago
5 0

2, 8, 32, 128,

Multiply by 4 for each number

8/2= 4

32/8= 4

128/32= 4

128*4=512

512*4= 2,048

Answer: D 512, 2,048

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Black_prince [1.1K]

Answer:

It would be A, C, and D.

Step-by-step explanation:

7 0
2 years ago
Income tax returns show that the mean income of self-employed persons in a particular year was £15,000, with a standard deviatio
DochEvi [55]

Answer:

Yes, There is significant difference.

Step-by-step explanation:

Null Hypothesis , H0 : Mean income = 15000

Alternate Hypothesis , H1 : Mean income  ≠  15000

t = (x - u) / ( s / √n)

x = sample mean = 14500 here, u = population mean = 15000 here ,             s = standard deviation =  975 here  , n = sample size

t = (14500 - 15000) / (975 / √169)

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As  calculated t value in absolute terms is > 1.96 , ie tabulated value at 95% significance level (two sided). So we reject the null hypothesis in favor of alternate hypothesis. Hence, we state that 'Mean Income ≠  15000'

6 0
3 years ago
A triangle cannot be both A. obtuse and right. B. acute and isosceles. C. equilateral and equiangular. D. scalene and acute.
Lady bird [3.3K]
A.) A Triangle cannot be both "Obtuse and Right"

[ It must be either Obtuse, Right or Acute. Never with two multiple properties ]

Hope this helps!
6 0
3 years ago
Read 2 more answers
In triangle ABC, a = 9, c = 5, and angle B = 120°. Find the measure of angle A to the nearest degree. Show your work.
slamgirl [31]

<u>Answer:</u>

Angle A = 39°

<u>Step-by-step explanation:</u>

We are given that there is a triangle ABC where a = 9, c = 5 and angle B = 120° and we are to find the measure of angle A.

But first we need to find the side b using the law of cosine:

b^2 = a^2 + c^2- 2a*c*cos(120)

b^2 = 81 + 25 - 2*9*5*(-0.5)

b=\sqrt{151}

Now finding angle A using law of cosine:

cos(A) = \frac{b^2+c^2-a^2}{2b*c}

cos(A) = \frac{151+25-81}{2*12.29*5}

cos A=0.7730

A=39.38

Therefore, the measure of angle A = 39°.

7 0
3 years ago
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which of the following regular polygons can make a tessellation: a)septagon b)octagon c)square d)hexagon
adell [148]

Answer:

septagon

Step-by-step explanation:

septagon is the only regular polygon that can make a tessellation

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3 0
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