I need the answer plzz I need help

Answer:

4.11

Step-by-step explanation:

Margin of error equals critical value times standard error.

MoE = CV × SE

For 90% confidence and n > 30, the critical value is z = 1.645.

The standard error is SE = σ/√n = 15/√36 = 2.5.

Therefore, the margin of error is:

MoE = (1.645) (2.5)

MoE = 4.11

The margin of error of a 90% confidence interval for the mean IQ score of all students with the disorder is 4.1125 and this can be determined by using the formula of margin of error.

Given :

According to the given data, the confidence is 90% and n > 30, so the critical value is z = 1.645.

Now, to determine the standard error using the below formula:

[tex]\rm SE = \dfrac{\sigma}{\sqrt{n} }[/tex]

[tex]\rm SE = \dfrac{15}{\sqrt{36} }=\dfrac{15}{6}[/tex]

SE = 2.5

Now, the formula of margin of error is given by:

[tex]\rm MOE = z\times SE[/tex]

MOE = (1.645) [tex]\times[/tex] (2.5)

MOE = 4.1125

So, the margin of error is 4.1125.

For more information, refer to the link given below:

https://brainly.com/question/22771970

answer:35 grams

explication: because if he need 350 grams of sugar to make 100 cookies , we have to divide 350 by 100 so it gives 35

The number of grams of sugar would he need to bake 10 cookies will be 35 grams.

A ratio is a collection of ordered integers a and b represented as a/b, with b never equaling zero. A proportionate expression is one in which two items are equal.

To bake 100 of his favorite cookies, Mr.Wallis needs 350 grams of sugar.

Let x be the amount of sugar for 10 cookies.

The number of grams of sugar would he need to bake 10 cookies will be

x / 10 = 350 / 100

x / 10 = 3.5

x = 35 grams

The number of grams of sugar would he need to bake 10 cookies will be 35 grams.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

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Answer:

b = $4000

Step-by-step explanation:

Let b represent the bonus amount.

Then the bonus, b, less the three deductions, is represented by

b - 0.30b - 0.30b - 025b, and this comes to $600.  Find the value of b.

b - 0.85b = $600, or

0.15b = $600

Then b = $4000

Answer:

[tex]a=2\frac{A}{P}[/tex]

Step-by-step explanation:

[tex]A=\frac{1}{2} ap[/tex]

because you want a, divide both sides by p

[tex]\frac{A}{p} =\frac{1}{2} a[/tex]

then, because the reciprocal of 1/2 is 2, multiply both sides by 2

[tex]a=2\frac{A}{P}[/tex]

Answer:

f(-9)= -189

Step-by-step explanation:

f(-9)= -3(-9)^2-6(-9)

f(-9)= -3(-9)^2 +54

f(-9)= -3(81) +54

f(-9)= -243 + 54

f(-9)= -189

[tex]f(-9)[/tex]  is [tex]-189[/tex]

What is function?

In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function. Functions were originally the idealization of how a varying quantity depends on another quantity.

According to question, we have the function [tex]f(x)=-3x^2-6x[/tex]

We have to find [tex]f(-9)[/tex]

So,  [tex]f(-9)=-3[/tex]×[tex](-9)^{2}[/tex][tex]-6(-9)[/tex]

                [tex]=-243+54[/tex]

                [tex]=-189[/tex]

Hence, we can conclude that   [tex]f(-9)[/tex] is [tex]-189[/tex]

Learn more about function here:

https://brainly.com/question/15912209?referrer=searchResults

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Answer:

1

Step-by-step explanation:

you asked to type 1

Answer:

B

Step-by-step explanation:

Isoceles triangle

Answer:

B. 65 degrees

Sorry it's been longer than 10 min I hope this is accurate.

Answer:6

Step-by-step explanation:

Answer:

1. 6

2. Add

3. (-2,-4)

Step-by-step explanation:

Edge2020

Answer:

it is 10 because 5x2= 10and20-10=10

Answer:

x = C+d-r

Step-by-step explanation:

C - x = r - d

-x = r - d - C

x = -(r - d - C)

x = -r+d+C

x = C+d-r

the answe is it is 2.5 or 2 1/2 as he said but in conclusion answe 2 1/2 or 2 and 1 half

Distance can be defined as how far a person or an object can go or cover.

The number of miles Mark walked in 1 hour is [tex]2\frac{1}{2}[/tex]  miles

From the question,

In 5 hours, Mark walked a distance of 12 1/2 miles.

Hence,

5 hours = [tex]12\frac{1}{2}[/tex]  miles

1 hour = ?

Cross Multiply

1 hour x [tex]12\frac{1}{2}[/tex]  miles / 5 hours

= [tex]2\frac{1}{2}[/tex] miles

The number of miles Mark walked in 1 hour is  [tex]2\frac{1}{2}[/tex] miles

To learn more, visit the link below:

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Answer:

I think it's J

Step-by-step explanation:

Because the ratio is 5:3:2

There are 150 raisins

And since 2 is one less than 3 my estimate would be subtracting 50 from 150 making there be 100 chocolate chips. Then if the unit is 50, 50 x 5 ( 5 in the ratio) would be 250.

I hope this helps, have a good day.

Answer:

B 0.375

Step-by-step explanation:

Google told me that 3/8 of a whole is 0.375

Answer:The anwser is B 0.375

Step-by-step explanation:

3 dived by 8 is 0.375

Answer:

...It is 10

Step-by-step explanation:

Answer: 2.5

Step-by-step explanation:

Answer:

2 1/2

Step-by-step explanation:

Do keep change flip. Make 2 an improper fraction by making it 2/1. Change the division symbol to a multiplication symbol. Flip 4/5 to 5/4. The equation you should have is 2/1x5/4.  2x5=10 1x4=4. the fraction you should have is 10/4. 10 divided by 4 =2.5. the fraction you should have now is 2 2/4. Simplify 2 2/4 to 2 1/2.

Answer:

Step-by-step explanation:

She has to raise 289 bats more

x₁ = 5

x₂ = - 2

Hi there !

x² - 3x - 10 = 0

x² + 2x - 5x - 10 = 0

x(x + 2) - 5(x + 2) = 0

(x - 5)(x + 2) = 0

x - 5 = 0 => x₁ = 5

x + 2 = 0 => x₂ = - 2

Good luck !

Answer:

A Book:Title

Step-by-step explanation:

Answer:

Badger: animal

Step-by-step explanation:

i took the test and its right

17 -7 ( 4 - 5 ) square = 17 -7 ( 1) = 17 - 7 ×1 = 17 -7 = 10 is the answer.

Answer:770

Step-by-step explanation:30% of 1100 is 330 330-1100=770

Answer:

1st box

3rd box

5th Box

Step-by-step explanation:

For the first equation, you have to move the decimal place 11 places to the right.

For the second equation, you have to move the decimal 13 places to the right.

-tell me if I'm wrong

Answer:

J

Step-by-step explanation:

Answer:

Line segments J'K' and M'N' do not intersect and are the same distance apart as JK and MN.

Step-by-step explanation:

If the line segments are translated 2 units to the left, then JK will start at (1, -1) and go to (5, -1), and MN will start at (1, -2) and to to (5, -2).  So the line segments remain parallel and the same distance apart.

Answer:

I suppose its " Kenya used money directly from her bank account to buy the jeans" because there are not any like supportive explanation for the others.

Step-by-step explanation:

Answer:

^^^Agreed^^^

Step-by-step explanation:

They're just simply correct, They helped me so let them help you!

Correct Choice is "A"

Go ahead and mark the other person Brainliest, they were the first correct answer!   :)

Have a good day!

Answer:

1500ml

Step-by-step explanation:

300 x 5 = 1,500ml

Please mark me brainliest! Hope this helps!

God bless :)