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Zanzabum
3 years ago
14

Round 38217 to 2 significant figures

Mathematics
1 answer:
juin [17]3 years ago
4 0
38000 rounded to two significant figures
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Use the box method to distribute and simplify (3x – 1)(-5x + 1)
Softa [21]

Answer:

-15x^2 +8x -1

Step-by-step explanation:

(3x – 1)(-5x + 1)=

3x(-5x) + 3x(1) - 1(-5x) -1 =

-15x^2 +3x +5x -1 =

-15x^2 +8x -1

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4 0
3 years ago
What is the simplest form of the expression 6x(x − 4) − 16x2 − (9x − 1)
Sedbober [7]
Use distributie property which is
a(b+c)=ab+ac
therefor
6x(x-4)=6x^2-24x

distribute the negative 1 infroont of the (9x-1)
-1(9x-1)=-9x+1
now we have

6x^2-24x-16x^2-9x+1
gropu like terms
6x^2-16x^2-24x-9x+1
add like terms
-10x^2-33x+1 is simplest form
8 0
3 years ago
Christina's family is building a house. On the blueprint, Christina's rectangular room measures 10cm by 12cm. The map has a scal
musickatia [10]

Answer:

270 ft square

Step-by-step explanation:

10cm * 1.5ft = 15 ft

12cm * 1.5ft = 18ft

18ft * 15ft = 270ft square

8 0
3 years ago
Read 2 more answers
1. Mr.Customs is correcting the class’s math homework on customary units. Which of the following measurements is reasonable?
frosja888 [35]

Answer:

The reasonable measurement in question 1 is D - the distance from New York to California is 2,250 miles.  The best unit of measurement for the length of the distance of your textbook is A - inch.  

Step-by-step explanation:

The United States uses the Imperial System of measurement which uses things such as inches, feet, yards and miles.  In order to understand reasonable measurements, you need to first realize the order in which size would be determined.  For instance, 12 inches is equal to one foot, which can be found on your typical ruler.  Additionally, three feet is equal to one yard, which we can find on a yard stick.  Lastly, there are 1,760 yards in one mile, which is typically measured with some time of pedometer/odometer.  So, when you think about calculating measurement for common things such as a pencil or distance between cities, think about whether this distance could be measured using a ruler or perhaps the odometer on a car.  

3 0
3 years ago
Simplify the expression. Write your answer using decimals <br><br> 22.5+7(n-3.4)
Slav-nsk [51]
.19 thats the answer if you do the problem good luck<span />
5 0
3 years ago
Read 2 more answers
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