MATHEMATICS MIDDLE SCHOOL

Write this in standard notation: 3.812 x 10^7

Answers

Answer 1
Answer:

Answer:

3,8120,000

Step-by-step explanation:

Move the decimal over 7 times to the left. If the exponent was negative you would move the decimal to the right 7 times

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There are 18 rows of seats in the auditorium. There are 24 seats in each row. How many seats are in the auditorium?

Answers

18 x 24 = 432

There are 432 seats in the auditorium!

Hope this helps! :)
 Information: 18 rows. 24 seats in each row.
18* 24 is 432 so there is 432 seats

Perimeter of a triangle with side length of 13.9in,10.4,8.5in

Answers

Perimeter =a+b+c

13.9 + 10.4 + 8.5 =

32.8 in (perimeter)

32.8 is the perimeter of that triangle

WHAT IS 4 TIMES TWO THIRDS IN A MIXED FRACTION

Answers

(4)/(1)×(2)/(3)=(8)/(3)
You then divide the numerator(top) by the denominator(bottom)
(8)/(3)=2 (2)/(3)
Your answer is 2 (2)/(3)
\frac{4}{1} × \frac{2}{3} = \frac{8}{3}You then divide the numerator(top) by the denominator(bottom)\frac{8}{3} =2 \frac{2}{3}Your answer is 2 \frac{2}{3}

HELP ME PLEASE I BEG YOU!!!!!!!!!!!!!

Answers

the answer to this are:
1) D
2) A and B
3) C

hope this works.

3.) r=2: 2+4/15= 6/15=2/5

2.) -3a-15=a: the fraction is negative. meaning the answer is negative, leaving a and c as choices. You can't square a since it is on different sides of the equation leaving you with c.

1.) answer is 5(x+4)=30: 3 is 2, meaning you would use the 2. 

How do I solve x^2 = 2x + 6?

Answers

Work is attached....
x^2-2x-6=0 
D = b^2 - 4ac 

a= 1 
b= -2
c=-6

D= -2^2 - 4 *1* -6 
D = 4 +24
D= 28

x1 =  -b+√(D)  / 2a 
x1= 2 + 5,29 / 2
x1 =  7,29/2 
x1= 3,645 

------------------
x2= (-b- √(D) )/(2a) 

x2= 2- 5,29 / 2

x2=-3,29/2
x2=-1,646

What four numbers fall between 0.123 and 0.124

Answers

.01230   and .01240  give you space to list several numbers - here are four of my choosing:

.01231,  .01233, .01236 and .01238
Adding zeros to the number give you the space to write numbers between them.
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