MATHEMATICS HIGH SCHOOL

6 8/9 times 36/31 .....

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

First, convert the mixed fraction to an improper one:

$\displaystyle{6(8)/(9)=(62)/(9)}$

Then, multiply:

$\displaystyle{(62)/(9)*(36)/(31)}$

Cross-reduce:

$\displaystyle{(2)/(1)*(4)/(1)}$

And simplify:

$\displaystyle{(8)/(1)=8}$

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A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. Nine seventh graders were part of a random sample of the population chosen to participate in a survey. For the sample to accurately represent the population, about how many sixth graders should be chosen? A.7 B.8 C.14 D.16

Wyatt uses 3.15 cups of flour in a recipe that makes 9 shortcakes Cora uses 2.4 cups of flour in a recipe that make 8 shortcakes how much more flour per shortcake is needed for Cora’s recipe

Answers

Wyatt - 3.15/9 = 0.35 cups of flour per shortcake
Cora - 2.4/8 =0.4 cups of flour per shortcake

0.4 - 0.35 = 0.05 cups of flour per shortcake
Cara needs 0.05 more cups of flour per shortcake.

LCD of 3/5x^4 and 2/7x^3

Answers

Answer:

31/35x^7

Step-by-step explanation:

3/5x^4 +2/7x^3

you find the lcm of the denominators

21/35x^7 + ,10/35x^7 =31/35x^7

Which of the following is a complex number?2+ 34 9i

Answers

Answer:

Option 3 - $4+9i$

Step-by-step explanation:

Given : Options in the figure.

To find : Which of the following is a complex number?

Solution :

Complex number is defined as the number which contains real number along with imaginary number.

The complex number is in the form of a+ib.

Now, we determine one by one.

Option 1 - -7

-7 is the real number not complex.

Option 2 - $2+√(3)$

$2+√(3)$ is the real number not complex.

Option 3 - $4+9i$

$4+9i$ is in the form a+ib so it is a complex number.

Option 4 - $\pi$

$\pi$ is the real number not complex.

Therefore, Only option 3 is the complex number.

4+9i, since i is a complex number which is the square root of 1. It is the only solution with i in it.

A car travels 55 miles per hour for 2 hours how far does the car travel in 1/2 of a hour 1 1/2 hour

Answers

Answer:

for a half an hour the car travels 13.75 miles

Step-by-step explanation:

Answer:

Suppose you travel a distance of 100 miles, and it takes 1 1/2 hours to do it. Your average speed is then 100 miles divided by 1.5 hours which equals 66.67 miles per hour.

Step-by-step explanation:

Please help with algebra 1) Mrs.Galicia sells online math and reading games. His revenue for each game (in dollars) is modeled by the given equations, where x is the number of days since the games went on sale.
Math Game: M(d)=x^2-9x-10
Reading Game: R(d)=2x+10
Solve the system algebraically. After how many days is the revenue for each game the same? Show your work and explain your answer.

Answers

It takes about 13 days for the revenue for each game the same.

Revenue is the amount of money made from selling a particular amount of products.

Given that the revenue is given by:

Math Game: M(d)=x²-9x-10

Reading Game: R(d)=2x+10

For both games to have the same revenue, hence:

M(d) = R(d)

x² - 9x - 10 = 2x + 10

x² - 11x - 20 = 0

x = -1.6 or x = 12.6

Since the number of days cannot be negative, hence it takes about 13 days for the revenue for each game the same.

Find out more at: brainly.com/question/19682087

Step-by-step explanation:

Given the following expression;

Math Game: M(d)=x^2-9x-10

Reading Game: R(d)=2x+10

x is the number of days since the games went on sale

In order to determine after how many days the revenue for each game wil be the same, we will equate M(d) to R(d)

M(d) = R(d)

x^2-9x-10 = 2x+10

x^2-9x-10-2x-10 = 0

x^2-11x-20 = 0

factorize

x = 11±√121-4(-20)/2

x = 11±√121+80/2

x = 11±√201/2

x = 11±37.16/2

x = 11+37.16/2

x = 48.16/2

x = 24.06

Hence the revenue for each game will be the same after 24 days

Indicate true or false as to whether the following equation is quadratic 2x-4x+1=0

Answers

the answer to the problem would be false

False. I think you should just simplify the problem. Good luck:)

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