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2 years ago

Please help correct answer gets brainliest

Mathematics

2 answers:

umka2103 [35]2 years ago

4 0

can you send the question on here or put the camera closer because i cant see that and i would like to help.

Aleks [24]2 years ago

3 0

Answer:

If he will get a simple interest of 40 dollars in 4 years, (if he doesn't spend anything) the answer for annual rate is 10 dollars.

Explanation: Divide 40 by 4=10

Annual means a year.

Just divide the amount of money by the amount of years. And bingo!

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What is the system of equations that describes the following graph

barxatty [35]

X < = -3
y > = 0
x < = 4.....but all the shading is not here....

I wanna say A is correct....but if A is correct, there would be more shading in ur graph...but it is the closest

8 0

3 years ago

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

Is it possiible to develop a place without a prior plan?give four points

Volgvan

Uhmmmm is there a picture of the problem i’m confused

4 0

3 years ago

Monica wants to save at least $399 to buy a new laptop computer. She has $284 saved already. Which options below will allow her

german

Answer:

She is given $205 and spends $57.

She earns $580 and spends $422.

She is given $38 and earns $42.

She earns $56 and is given $59.

Step-by-step explanation:

You just have to do the math.

4 0

3 years ago

The minimum number of rigid transformations required to show that polygon ABCDE is congruent to polygon FGHIJ is 1 2 3 4 . A rot

MaRussiya [10]

I found the corresponding image. Pls. see attachment.

<span>The minimum number of rigid transformations required to show that polygon ABCDE is congruent to polygon FGHIJ is 2 (translation and rotation).

A rotation translation must be used to make the two polygons coincide.

A sequence of transformations of polygon ABCDE such that ABCDE does not coincide with polygon FGHIJ is a translation 2 units down and a 90° counterclockwise rotation about point D </span>

8 0

2 years ago

Please help correct answer gets brainliest​

Please help correct answer gets brainliest