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vaieri [72.5K]
2 years ago
13

Whats the 8th term of 12,18,27

Mathematics
2 answers:
yuradex [85]2 years ago
5 0

Answer:

205.03125.

Step-by-step explanation:

18/12 = 1.5

27/18 = 1.5

This is geometric with nth term = ar^(n-1)

Here first term a = 12 and common ratio r = 1.5, so

The 8th term = 12(1.5)^(8-1)

= 205.03125

vekshin12 years ago
4 0
THIS QUESTION IS SOLVED BY DOUBLE DIFFERENCE

8,12,18,27

DIFFERENCE NO. 1

12–8=4

18–12=6

27–18=9

DIFFERENCE NO. 2

6–4=2

9–6=3

FINALLY

4+9=13

13+27=40

ANSWER= 40
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A sample of 65 observations is selected from one population with a population standard deviation of 0.75. The sample mean is 2.6
Angelina_Jolie [31]

Answer:

Step-by-step explanation:

The null hypothesis is

H0 : μ1 ≤ μ2

The alternative hypothesis is

H1 : μ1 > μ2

a) it is a one-tailed and also a right tailed test

b) The decision rule is the basis on which the null hypothesis is rejected or not. If 0.08 > p value, reject H0. If 0.08 < p value, do not reject H0.

c) Since the population standard deviations are known, we would use the formula to determine the test statistic(z score)

z = (x1 - x2)/√σ1²/n1 + σ2²/n2

Where

x1 and x2 represents sample means

σ1 and σ2 represents population standard deviations

n1 and n2 represents number of samples

From the information given,

x1 = 2.67

x2 = 2.59

σ1 = 0.75

σ2 = 0.66

n1 = 65

n2 = 50

z = (2.67 - 2.59)/√0.75²/65 + 0.66²/50

= 0.08/√0.00865 + 0.008712

z = 0.61

From the normal distribution table, the probability value corresponding to the z score is 0.73

d) If 0.08 > 0.73, we would reject H0

e) the p-value is 0.73

3 0
3 years ago
James earns $9.45 per hour. IfJames worked 37.75 hours last week, what was his gross pay?
tresset_1 [31]

Answer:

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Step-by-step explanation:

6 0
3 years ago
What’s the answer?????
S_A_V [24]
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3 years ago
Solve the equation 14y+82=6x-20 for x if y is 25
Leni [432]

Answer:

x= 226/3 or 75.33333333333333333333333333333

Step-by-step explanation:

14y+82=6x-20

y=25

Sub y=25 into 14y+82=6x-20

14y+82=6x-20

14(25)+82=6x-20

Calculate as follows:

14(25)+82=6x-20

350+82=6x-20

432=6x-20

Add twenty to both sides:

432+20=6x-20+20

452=6x-0

452=6x

Divide both sides by 6

452=6x

452/6=6x/6

452/6=x

x= 226/3 or 75.33333333333333333333333333333

8 0
3 years ago
What the sum of 1/3 2/5
goblinko [34]
Yes it is 11/15 1/3= 5/15 2/5= 6/15 5/15 + 6/15= 11/15
5 0
3 years ago
Read 2 more answers
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