Two students are interested in whether or not there is variation in their test scores for math class. There are 15 total math tests they have taken so far. The first student's grades have a standard deviation of 38.2. The second student's grades have a standard deviation of 22.5. The second student thinks his scores are lower. State the null and alternative hypotheses.

Answer:

F for number 14

Step-by-step explanation:

Answer:

110

Explanation:

First move the decimal point over to the left twice.

.375

Then multiply 80 by .375 like this :

.375 x 80 = 30

Lastly, add 30 to 80 and put the dollar sign.

$110

Answer:

11

Step-by-step explanation:

11 has 85° because it is opposite to 9

The angle that must also be measured of 85° is angle 11.

Option C is the correct answer.

The angles between two lines are the angles formed by two intersecting lines, measured in degrees or radians.

Several different types of angles can be formed between two lines, including acute angles, right angles, and obtuse angles.

We have,

In the diagram,

∠9 = 85

This means,

∠9 and ∠11 are opposite angles.

And,

Opposite angles are equal.

So,

∠9 = ∠ 11 = 85

Thus,

The measure of angle 11 is also 90.

Learn more about angles here:

https://brainly.com/question/7116550

The complete question.

In the diagram, the measure of angle 9 is 85°

Which angle must also measure 85°?

Answer:

4/5 x 1/4 = 4/20 as simplified as 1/5 in fraction form.

4/5 x 1/4 = 0.2 in decimal form.

Step-by-step explanation:

Answer:

0.2

Step-by-step explanation:

hope it helps dawg

Answer:

the answer is 4.15.

Step-by-step explanation:

this is super easy my ffriend. think about it. 53 miles per hour. how many miles do u go in an hour... 53 MILES PER HOUR. so you now know you go 53 miles every hour. so what you then do is see that it is 220 miles to ur destination. in an hour you go 53 miles so you take 220 DIVIDED BY 53 and you get ur answer.

Answer:

30x

Step-by-step explanation:

Answer:

30x

Step-by-step explanation:

a negative multiplied by a negative is positive.

-5x x -6 =30x

Hope I helped!

Answer:

B. Not enough information.

Step-by-step explanation:

We are given that all three angles of ∆DEF is congruent to all the three corresponding angles of ∆XYZ. However, this is is not enough to prove that they are both congruent to each other. There's no information about any of tge side length.

AAA is not a criterion that proves two triangles are congruent.

Therefore, we will conclude that there is not enough information.

Answer:

[tex]SP = 1482[/tex]

Step-by-step explanation:

Given

[tex]CP = Rs. 1560[/tex] --- Cost Price

[tex]Loss = 5\%[/tex]

Required

Determine the selling price (SP)

This is calculated using:

[tex]\%Loss =\frac{CP - SP}{CP} * 100\%[/tex]

So, we have:

[tex]5\% = \frac{1560 - SP}{1560} * 100\%[/tex]

[tex]5 = \frac{1560 - SP}{1560} * 100[/tex]

Multiply through by 1560

[tex]1560 * 5 = \frac{1560 - SP}{1560} * 100*1560[/tex]

[tex]1560 * 5 = (1560 - SP) * 100[/tex]

[tex]1560 * 5 = 1560 * 100- SP * 100[/tex]

[tex]7800 = 156000- 100SP[/tex]

Collect Like Terms

[tex]100SP= 156000- 7800[/tex]

[tex]100SP= 148200[/tex]

Make SP the subject

[tex]SP = \frac{148200}{100}[/tex]

[tex]SP = 1482[/tex]

The selling price is Rs. 1482

Answer:

6 complete costumes

Step-by-step explanation:

he has 27/2 total fabric

1 costume requires 1 2/4 + 3/4 of fabric, which is 2 1/4

we divide 27/2 by 9/4

27/2 x 4/9 = 6

Answer:

square's area is 25.

Step-by-step explanation:

Answer:

Step-by-step explanation:

m=72° (corresponding angles)

n=m=72° (corresponding angles)

p=180-(80+72)=180-(152°)=28°

x=np=5

y=nm=8

z=pm=12

Answer: 36 degrees

Step-by-step explanation:

A triangle angle sum is 180.

So 90 + 54 = 144

180-144 =36

Answer:

your answer is B 6(5.+2y)

forgive me if i am wrong

Step-by-step explanation:

5x 234 = 1170 pounds

hope this is right, the number was hard to read.

Answer:

P: the principal, the amount invested

A: the new balance

t: the time

r: the rate, (in decimal form)

Step-by-step explanation:

Ex1: If $1000 is invested now with simple interest of 8% per year. Find the new amount after two years.

P = $1000, t = 2 years, r = 0.08.

A = 1000(1+0.08(2)) = 1000(1.16) = 1160

Answer:

x=4

Step-by-step explanation:

Answer: 2 each

Step-by-step explanation:

Answer:

the first blank is corresponding and the second blank is 105.

Step-by-step explanation:

Hope This Helps!!

(brainliest please if possible)

Answer:

35

Step-by-step explanation:

Answer:

x++3 is even equal sides

Step-by-step explanation:

Answer:

3

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

#

Given:

The complex number is [tex]i^{34}[/tex].

To find:

The value of given complex number.

Solution:

We have,

[tex]i^{34}[/tex]

It can be written as

[tex]i^{34}=i^{32+2}[/tex]

Using properties of exponents, we get

[tex]i^{34}=i^{32}i^{2}[/tex]            [tex][\because a^{m+n}=a^ma^n][/tex]

[tex]i^{34}=i^{4\times 8}i^{2}[/tex]

[tex]i^{34}=(i^4)^8i^{2}[/tex]            [tex][\because (a^{m})^n=a^{mn}][/tex]

We know that, [tex]i^4=1,i^2=-1[/tex].

[tex]i^{34}=(1)^8(-1)[/tex]

[tex]i^{34}=(1)(-1)[/tex]

[tex]i^{34}=-1[/tex]

The value of [tex]i^{34}[/tex] is -1. Therefore, the correct option is C.

Answer:

Step-by-step explanation:

(1001+68.5+33.82+581.95)÷4=400(nearest to hundred)

Answer:

The answer is (D)

Step-by-step explanation:

If you need to explain I got you but Ill just give the answer for now!

Mark as Brainllest...

Answer:

Step-by-step explanation:

First find the value of x:

Find the value of y:

Correct choice is D

Answer:

she gives each 2, and has 3 left

Step-by-step explanation:

you can fit 2 fours into 11, and you have 8 left

Answer:

u = -9

Step-by-step explanation:

Answer:

u=-9

Step-by-step explanation:

2u+2u=4u

6-42=-36

-36/4

-9

Answer:

The second one

Subtract 1 from both sides

Answer:

subtract 1 to both sides

Step-by-step explanation:

11x+1=67

    -1   -1

11x=66

/11   /11

x=6