MATHEMATICS MIDDLE SCHOOL

Is the square root of 130 rational or irrational? and where would it be located on a number line?

Answers

Answer 1
Answer: Let's start by the easiest question, the second.

We knoa that 11^2=121\ \textless \ 130\ \textless \ 12^2=144 hence \boxed{11\ \textless \ √(130)\ \textless \ 12}

Now let's try simplifying the square root of 130 : 130=2\cdot5\cdot13, which are all prime numbers that appear only once : the square root of 130 is irrational.

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Lennon has a checking account.He withdrew $130 from an ATM Tuesday.Wednesday he deposited $240.Friday he wrote a check for $56.What was the total change in lennons account?

Answers

Answer= Lennons account has 54 more dollars than it did originally 

Change= -130+240-56
Change= 54


**Edit
the expression can also be written as such

Change=240-130-56
Change=54

Value of the expression. ? 18-2x(4+3)

Answers

18 - 2x(4+3) =

combine like terms in the parentheses

18 - 2x(7) =

Multiply

18 - 14x  (This is the value of the expression)

We can solve for x by setting it equal to zero

18 - 14x = 0
-14x = -18
x = -18/-14
x = 1 2/7
The answer to the expression is 4

What is 15 (x+20)Please help me in any way you can
and I hope you have the answer for this question

Answers


When you see a number outside the parentheses like that,
it means that the number operates on everything inside.
So 
      15 times (x+20)     means     (15 times 'x') + (15 times 20) .

15 times x  =  15x
15 times 20  =  300

So
       15(x + 20)  =  15x + 300

Dan drove 246 miles using 9 gallons of gas. At this rate how many gallons of gas would he need to drive 410 miles ?

Answers

He will need to use 15 gallons of gas.

To solve this problem, we can write and solve a proportion.

It would be:

246 / 9 = 410 / x

If you cross multiply and divide, you will get that x = 15.

Your mid-morning break begins at 9:45 A.M. and lasts for 10 minutes. You work 2 hours and 10 minutes until your lunch break. What time does your lunch break begin? ___:___ __M

Answers

Answer:

12:05PM

Step-by-step explanation:

The answer to your question is 12:05 PM. God Bless!

There are 9 showings film about endangered species at the science museum.a total of 459 people saw the film.the same number of people were at each showing.about how many people were at each showing?select the numbers the quotient is between.a.40 b.50 c.60 d.70 e.80

Answers

The answer would be B.50
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