All categories

3 years ago

What are arithmetic sequences

1 answer:

7 0

In an arithmetic sequence, the difference between consecutive terms is always the same. For example, the sequence 3, 5, 7, 9 ... is arithmetic because the difference between consecutive terms is always two.

You might be interested in

Wilma works at a bird sanctuary and stores bird seed into plactic containers. She has 3 small containers that hold 8 pounds of b

Leona [35]

Answer:

Step-by-step explanation:

Calculation for how much birdseed does she have left over

First step

(3*8*6*12) - 4-2*30

Second step

=[24+6*(10+2)] - 4-60

Third step

Let remove the bracket of (10+2)

=[24+6*10+6*2] - 4-60

Fourth step

=(24+60+12) - 4-60

Fifth step

=(84+12)-4-60

Sixth step

=96-4-60

Seventh step

=92-60

=32

Therefore the amount of birdseed that she have left over will be 32

4 0

3 years ago

A sample of 173 students using Method 1 produces a testing average of 88. A sample of 127 students using Method 2 produces a tes

Lerok [7]

Answer:

43 < μ₁ - μ₂ < 49

Step-by-step explanation:

Sample 1:

Mean x₁ = 88

Sample size n₁ = 173

Sample standard deviation s₁ = 12,22

Sample 2:

Mean x₂ = 53,5

Sample size n₂ = 127

Sample standard deviation s₂ = 13,59

CI 95 % α = 5% α = 0,05 α/2 = 0,025

We need to find:

( x₁ - x₂ ) - tα/2,v *√ (s₁²/n₁ ) + (s₂²/n₂) < μ₁ - μ₂ < ( x₁ - x₂ ) + tα/2,v *√ (s₁²/n₁ ) + (s₂²/n₂)

v = degree of fredom

v = [ ( s₁²/n₁ + s₂²/n₂)² / (s₁²/n₁)² /n₁-1 + (s₂²/n₂)²/n₂-1

v = [ (0,86 + 1,45 ) / 0,0043 + 0,017

v = 2,31 / 0,0213

v = 108

Then t 0,025, 108 from t table is: We will take v = 100

t = 1,984

Now

√ (s₁²/n₁ ) + (s₂²/n₂) = √ 0,86 + 1,43

√ 2,3 = 1,51

Then: CI:

(173 - 127 ) - 1,984*1,51 < μ₁ - μ₂ < ( 173 - 127 ) + 1,984*1,51

46 - 3 < μ₁ - μ₂ < 46 + 3

43 < μ₁ - μ₂ < 49

8 0

3 years ago

Helppppp mehhhhh just 1 questionnnnnn 1 pic includedddddd...

Grace [21]

Answer:

600 students, because 35%=0.35. When you multiply 0.35 by 600 you get 210.

5 0

3 years ago

How to convert decimals into fractions in simplest form

madam [21]

For example, lets take $\frac{25}{100}$

We need to first factor the numerator and denominator to find the common numbers which we can simplify it by.

$\frac{25}{100} = \frac{5 \times 5}{5\times 5\times 4}$

If we divide by 5 x 5 on both the numerator and denominator because both of them have it in common, we will get the simplest form.

$\frac{5 \times 5\div 5 \div 5}{5\times 5\times 4\div 5\div 5} = \frac{1}{4}$

5 0

3 years ago

Matt is on a road trip and is

Svet_ta [14]

Answer:

80 miles

Step-by-step explanation:

basically just 4×20. quite simple really

7 0

3 years ago

Read 2 more answers