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Sphinxa [80]
3 years ago
11

Write the place value of the underlined digit round each number to the place of the underlined digit.

Mathematics
1 answer:
fiasKO [112]3 years ago
8 0

Answer:

3.0.8

4.8

5.11.51

Step-by-step explanation:

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What is 2 3/5 minus 1 3/8 estimate the answer.
daser333 [38]
Find a common denominator first 

2 24/40 - 1 15/40 = 1 9/40 

it is already in simplest form so you can not reduce it
6 0
3 years ago
A polynomial expression is shown below.
tester [92]
The polynomial is (mx^3+3)(2x²+5x+2)-(8x^5 +20x^4)
if it is reduced to 8x^3+6x²+15x+6, so we can find the value of m

 (mx^3+3)(2x²+5x+2)-(8x^5+20x^4) = <span>8x^3+6x²+15x+6
</span>2mx^5+5mx^4+2mx^3+6x²+15x+6-8x^5-20x^4=<span>8x^3+6x²+15x+6
</span>2mx^5+5mx^4+2mx^3=8x^3+6x²+15x+6-6x²-15x-6+ <span>8x^5+20x^4
</span>=  8x^5+20x^4+<span>8x^3= 4(2x^5+5x^4+2x^3)
finally

</span>m(2x^5+5x^4+2x^3)=<span>4(2x^5+5x^4+2x^3), and after simplification
</span>
C:  m=4

<span>4. When the expression is factored x²-3x-18 completely, 
</span>
one of its factor is x-6
<span>x²-3x-18=0
</span>D= 9-4(-18)= 81, sqrtD=9 x=3-9/2= -6/2= -3, and x=3+9 / 2= 6
so <span>x²-3x-18= (x-6)(x+6)

</span>
3 0
3 years ago
What is (+16) - (+2)?​
Nimfa-mama [501]

Answer:

(+16) - (+2) = 14

Step-by-step explanation:

Hope this helped you!

5 0
3 years ago
Read 2 more answers
14) x - 27 0<br> 3<br> X^3-27=0<br> X^3-27=0
Inessa [10]

Answer:

For the top equation, x = 27 (I think you meant to put x - 27 = 0. If not, I can always edit my answer for you)

For the bottom, x = 3

Hope this helps! Have a grrrreat day lol

5 0
3 years ago
Savannah is 24 years older than Ryan, while Sebastian is 5 times as old as Ryan. If Savannah and Sebastian are twins, which equa
IRISSAK [1]

Answer: I think the answer would be b) 24+2x=5x

sry if it's wrong


3 0
3 years ago
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