Help! Best answer gets brainliest!

Answer:

Difference in scores between his 7th and 8th quizzes = 22

Step-by-step explanation:

Given: Mean score for first 6 quizzes is 33 points. After his 7th quiz his mean score was 32 points. After the 8th quiz the mean was 34.

To find: difference in scores between his 7th and 8th quizzes

Solution:

Mean scores = Total points scored in quizzes ÷ Number of quizzes

So,

Total points scored in quizzes = Mean scores × Number of quizzes

As mean score for first 6 quizzes is 33 points,

Total points scored in 6 quizzes = 6 × 33 = 198

As mean score for first 7 quizzes is 32 points,

Total points scored in 7 quizzes = 7 × 32 = 224

So,

7th score = Total points scored in 7 quizzes - Total points scored in 6 quizzes

               = 224 - 198

               = 26

As mean score for first 8 quizzes is 34 points,

Total points scored in 8 quizzes = 8 × 34 = 272

So,

8th score = Total points scored in 8 quizzes - Total points scored in 7 quizzes

               = 272 - 224

               = 48

Therefore,

Difference in scores between his 7th and 8th quizzes = 48 - 26

                                                                                          = 22

Answer:

Decreased I think because they bumped into the other person

Step-by-step explanation:

Answer:

increased

 i just heard my brother say it because he's in highschool. TwT

Answer:

21n

Step-by-step explanation:

7(3n)

7×3

21n

I hope this helps

Answer:

go through the other door and get your dog... and then just wait for a parent to fix the door so you dont rip it of the rims

Step-by-step explanation:

Answer:

Just go out through the backdoor and save your dog and wait for your parents duh

Answer:

The answer is The Commutative property

This means the Commutative property states that you can add or multiply regardless of how the numbers are grouped.

Answer:

e=g(h-f) or e=gh - gf

Step-by-step explanation:

Answer:

e = hg - fg

Step-by-step explanation:

Given

[tex]\frac{e}{g}[/tex] + f = h ( multiply through by g to clear the fraction )

e + fg = hg ( subtract fg from both sides )

e = hg - fg

Answer:

y=5/3 is the only real solution

Step-by-step explanation:

Solve for y over the real numbers:

11 y^2 - 19 y - 10 = -4 y^2

Add 4 y^2 to both sides:

15 y^2 - 19 y - 10 = 0

The left hand side factors into a product with two terms:

(3 y - 5) (5 y + 2) = 0

Split into two equations:

3 y - 5 = 0 or 5 y + 2 = 0

Add 5 to both sides:

3 y = 5 or 5 y + 2 = 0

Divide both sides by 3:

y = 5/3 or 5 y + 2 = 0

Subtract 2 from both sides:

y = 5/3 or 5 y = -2

Divide both sides by 5:

Answer: |

| y = 5/3 or y = -2/5

Step-by-step explanation:

X = 10 (use pyth)

Y = 11.18(use pyth)

Step-by-step explanation:

(x-2) is not a factor

x = -3 is not a zero

Step-by-step explanation:

Since the 2 side lines are parallel,

[tex]2x + 40 + 5x = 180 \\ 7x + 40 = 180[/tex]

(Note that you can further simplify the equation if you wish to, this is a general equation.)

(Equation formed due to Corresponding angles and Sum of angles on the same straight line)

Answer:

y = 2x - 5

Step-by-step explanation:

Hi,

y = 2x + b

1 = 2 (3) + b

1 = 6 + b

-5 = b

y = 2x - 5

I hope this helps :)

Answer:

8/9

Step-by-step explanation:

3/6 + 7/ 18

Make the denominator common by finding the LCM = 18

Multiply 3 by 3

Therefore sum = 3*3 + 7/ 18

sum = 9+7/18

sum = 16/18

=> 8/9

Please mark my answer as the brainliest for further answers :)

Answer:

(s - 1)(s² + s + 1)

Step-by-step explanation:

s³ - 1 ← is a difference of cubes and factors in general as

a³ - b³ = (a - b)(a² + ab + b²) , then

s³ - 1

= s³ - 1³

= (s - 1)(s² + s + 1)

The required factorized form of the given expression is (s - 1)(s² + s + 1).

Factorization, also known as factoring, is the breakdown of one element into a product of other objects, or factors, which when multiplied together generate the original. For example, the number 21 factors into primes as 3 × 7, and the polynomial x² − 9 factors as (x+3)(x-3).

We have been given that the expression below as

s³ - 1

We have to determine the factor of the given expression

As per the question, we have

s³ - 1

This is a difference between cubes and factors in general as

a³ - b³ = (a - b)(a² + ab + b²) , then

⇒ s³ - 1 = s³ - 1³

⇒ (s - 1)(s² + s + 1)

Thus, the required factorized form is (s - 1)(s² + s + 1).

Learn more about the Factorization here:

brainly.com/question/4184435

#SPJ2

Answer:

1. 40% 2. 1/10

Step-by-step explanation:

1. 8/20 * 100

800/20=40

2. 1/(3+1+4+2)

1/10

Answer:

Actual length of ship is  150  meters.

Step-by-step explanation:

As model ship is built to a scale of  

1 centimeter  : 5  meters and

length of model ship is  30  centimeters

Actual length of ship is  30 × 5 = 150  meters.

Answer: discount was 186

Step-by-step explanation: original price is x.

15 % = 0.15x , and x -0.15x= 1054 and 0.85x = 1054

Then x = 1054/0.85 = 1240. Discount was 1240-1054 = 186

Answer:

2 or 4 because it's in the middle I think 2

Step-by-step explanation:

hope this helps have a good rest of your night/day :) ❤

can I please get brainliest if correct only got like 4 pls

Answer: B

Step-by-step explanation:

if I'm wrong sry lol

Answer:

D

Step-by-step explanation:

- 117° is positioned in the 3rd quadrant where sine < 0

The related acute angle is 180° - 117° = 63°

Then

sin(- 117)°

= - sin63° → D

Answer:

Probability

b-bald Hisoka

Answer:

PROBABILITY

Step-by-step explanation:

Probability of an event is a number that tells how likely it is to happen

Answer:

50m cubic

Step-by-step explanation:

Answer:

1) Given the equation y = 35(0.57)^x

a) Does this equation represent growth or decay? ______Decay_________

b) What is the rate of growth or decay? _______43%________

1-0.57=0.43 100x0.43=43%

c) What is the initial value? _____35________

d) Evaluate for x = 3

y=(35)(0.57)^(3)

=(35)(0.185193)

=6.481755

Answer:

NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!!!!!!!!!!!!!!!!

Step-by-step explanation:

Answer:

20 metes

Step-by-step explanation:

:)

Answer:

169

Step-by-step explanation:

Answer:

John has a sheet of paper that is 8 feet long. He cuts the length of paper into eighths, and then cuts the length of each of these [tex]\frac{1}{8}[/tex] pieces into fourths. How many pieces does he have? How many inches long is each piece?

Step-by-step explanation:

Answer:

1.732

Step-by-step explanation:

cube root of 81 is

=1.732

Answer: 3(cos(90degrees)+isin(90degrees))

Answer:

39.52

Step-by-step explanation:

just multiply 3.8 by 104 and thats how many liters

Answer:

360 tons

Step-by-step explanation:

Coke burned : cast iron = 15 : 16

The smelter produces 384 tons of cast iron a day

Let x = tons of coke burned

Coke burned : cast iron = x : 384

Equate both ratios

15 : 16 = x : 384

15/16 = x/384

Cross product

15 * 384 = 16 * x

5,760 = 16x

x = 5,760/16

x = 360

x = tons of coke burned = 360 tons