MATHEMATICS MIDDLE SCHOOL

What is the value of the ratio 18:21??

Answers

Answer 1

Answer:

Answer:

18:21 is equivalent to 18/21. When you simplify 18/21, you get 6/7

Answer 2

Answer:

Answer:

85.714285714286%

Step-by-step explanation:

i hope this helps, if you are looking for the percentage.

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A MOVIE THEATER HAS 1000 SEATS . THERE ARE 424 ADULTS AND 339 CHILDREN HOW MANY SEATS ARE LEFT?

Answers

There are 237 seats left in the movie theater.

How many seats are left in the movie theater?

An expression in math is a statement having minimum of two numbers, or variables or both and an operator connecting them.

Total number of people in the movie theater:

= 424 adults + 339 children

= 763 people

Number of seats left:

= Total number of seats - Number of people

= 1000 - 763

= 237 seats.

Answers

y = mx + b

m is the slope
b is the y-intercept

First find the slope

$slope = (y_2-y_1)/(x_2-x_1) = (-1+2)/(5-0)= (1)/(5)$

So far we have: y = 1/5x + b

Now we need to find b

y = 1/5x + b

Plug in (0,-2)

-2 = 1/5(0) + b

-2 = b

So the final equation is $\boxed{y=(1)/(5)x-2}$

f(x) = 1/5 x - 2

-2 is your y intercept and using (y-y)/(x-x) you can get slope

(-1 - - 2)/ (5-0) = (-1+2) / (5) = 1/5

24 miles per hour is equal to how many feet per second

Answers

We already know that 1 mile = 5280 foot
Also we know that 1 hour = (60 * 60) seconds
= 3600 seconds
Then
24 miles per hour = (24 * 5280)/3600
= 126720/3600
= 35.2 feet/sec
So 24 miles/hour is equal to 35.2 feet per second. The only important thing is to know the conversions correctly. Then the problem becomes easy to solve. I hope the conversions and the procedure for solving the question is clear to you and in future you will be able to do such problems on your own without requiring any help.

24 miles per hour is equal to 35.2 feet per second

while shopping, you purchase 4 pairs of jeans, 6 shirts, and 3 pairs of shoes. How many different outfits will you be able to make using one pair of jeans, one shirt, and one pair of shoes?

Answers

One way is to multiply in which the answer is 72 but to make sure you should make a tree diagram.

6 different outfits, you have 4 jeans thats 4 outfits and 6 shirts which you already have 4 outfits from the 6 shirts and the 2 shirts left make 2 different outfits.

How many zeros should have 5 to have 72 dividers?

Answers

Hello,

nice as problem.

Here x has a power of 5 as divider and a power of 2 as divider (in order to make a power of 10.

$5=5^1*2^0$

$50=5^1*(5^1*2^1)=5^2*2^1$

$500=5^1*(5^2*2^2)=5^3*2^2$

$50 000 000=5^8*2^7$

Numbers of dividers: (8+1)*(7+1)=9*8=72

How do u do these equations?

Answers

First, i would look at the word sum. what does it mean by sum? the sum of two numbers is what? I think of it as sum=its an addition problem and the sum is what those two numbers added together equal. For example the sum of one and two is thee.

Lets say Matt's number is x.

So we got three numbers here; x, 7.5 and 38.2.

how about i simplyfy; "the sum of his number and 7.5 is 38.2"

What it is saying is that...

x and 7.5's sum is 38.2

if sum means it is an addition problem and 38.2 is the answer to this addition problem between 7.5 and x, even though you want to find x... then if you know this, your neext step is to translate this into an equation.

x plus 7.5 equals 38.2

x+7.5=38.2.

when it is an equation, you must subtract 7.5 by both sides. so it would be x=38.2-7.5

38.2-7.5 is... 30.7

that means x, Matt's number, is 30.7.

to do some these kinds of problems, you have to translate the sentences into an equation.

when it says the word product it is a multiplication problem

when a number is decreased, it is less than the original amount. so you are subtracting from the original number. so it would be "the number minus lets say 2 is equal to lets say four." that would mean the number is 6. x-2=4 is the equation.

I hope this helped out... I don't have the time to explain everything... this info may help...

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