Ask question

Ask question

All categories

3 years ago

15

a builder needs 1,044 nails to finish a project. if the nails come in packages of 58, how many packages should the builder purch

ase

1 answer:

Natali [406]3 years ago

4 0

9514 1404 393

Answer:

18

Step-by-step explanation:

(1044 nails)/(58 nails/pkg) = 18 pkg

The builder should purchase 18 packages of nails.

You might be interested in

Wewaii [24]

13 hours
200 divided by 15 = 13.33333333333333
So since this a long number I have to round.
Answer: 13 hours

5 0

3 years ago

Read 2 more answers

12,11,28,27,44,43,60,59 what number pattern?

Alinara [238K]

05 22 –27<span> 08 40 37 –03 22 –22 –23 –02 –20 48 53 18 31 –41 –38 –29 –47 30 – 13 46 –07 29 –06 –40 – 19 –20 02 22 20 –06 17 35 31 –01 –37 –34 – 18 –30 ... </span>27 28<span> 10 —ll 16 10 –50 –52 – 10 — 13 35 40 </span>27 28<span> –54 –70 –36 –39 –48 –05 03 03 – </span>12<span> –24 – 13 – 14 – 14 –46 –29 –40 39 </span>60<span> 38 48 –</span>59<span> –</span>59–43<span> –</span>27<span> –</span>44<span> –01 ...ik this didnt help but ill never know if it acually did </span>

6 0

4 years ago

Read 2 more answers

A music store gives every 20th customer A $5 gift card. Every 50th customer gets A $10 gift card. Which customer will be the fir

slavikrds [6]

The 100th customer would be the first to receive both.
20×5=100
50×2=100

3 0

3 years ago

Read 2 more answers

Pilates is a popular set of exercises for the treatment of individuals with lower back pain. The method has six basic principles

Bas_tet [7]

Answer:

a) We reject H₀ We find difference between the mean of the two groups

b) we accept H₀ : There is no statistical difference ( in the scale of pain) when the difference in samples means is 1

Step-by-step explanation:

Group 1: Only with educational material

Sample size n₁ = 42

Sample mean x₁ = 3,2

Sample standard deviation s₁ = 2,3

Group 2: With exercises with the treatment of individuals

Sample size n₂ = 42

Sample mean x₂ = 5,2

Sample standard deviation s₂ = 2,3

Test Hypothesis

Null Hypothesis H₀ x₂ - x₁ = 0 or x₁ = x₂

Alternative Hypothesis Hₐ x₂ - x ₁ > 0 or x₂ > x₁

Significance level α = 0,01

Sample sizes are n₁ = n₂ > 30

We use z-test

for α = 0,01 z(c) ≈ 2,32

To calculate z(s)

z(s) = ( x₂ - x₁ ) / √ (2,3)²/42 + (2,3)²/42

z(s) = ( 5,2 - 3,2 )/ √0,2519

z(s) = 2 / 0,5

z(s) = 4

Comparing z(s) and z(c)

z(s) > z(c)

z(s) is in the rejection region. We reject H₀ the true average pain level for the control condition exceeds that for the treatment condition.

b) Does the true average pain level for the control condition exceed that for the treatment condition by more than 1.

In this case

z( s) = x₂ - x₁ / 0,5

z(s) = 1 /0,5

z(s) = 2

Comparing z(s) and z(c) now

z(s) < z(c) 2 < 2,32

And z(s) is in the acceptance region ( for the same significance level) and we should accept H₀ equivalent to say that the two groups statistical have the same mean

5 0

3 years ago

How does the graph of the function g(x) = 2x – 4 differ from the graph of f(x) = 2x

Lena [83]

9514 1404 393

Answer:

the y-intercepts differ

Step-by-step explanation:

The x-coefficient is the same for each function, so parallel lines are described. The function g(x) has a y-intercept of -4; f(x) has a y-intercept of 0.

The graphs differ in their intercepts.

__

<em>Additional comment</em>

g(x) can be considered to be a translation downward of f(x) by 4 units. The same graph of g(x) can be obtained by translating f(x) to the right by 2 units. That is, both the x-intercepts and y-intercepts differ between the two functions.

5 0

3 years ago