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Andreas93 [3]
3 years ago
8

Plz help me plzz i need it

Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0

Answer:

second one

Step-by-step explanation:

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Simplify (x - y + 1) - (x + y - 1).<br> -2y+2<br> 2y - 2<br> -2x + 2y<br> O2x - 2y + 2
Finger [1]

Answer:

-2y +2

Step-by-step explanation:

(x - y + 1) - (x + y - 1)

Distribute the minus sign

(x - y + 1) - x - y + 1

Combine like terms

x-x -y-y +1+1

-2y +2

7 0
3 years ago
Read 2 more answers
Find the GCF<br> 1. 12,21,30<br> 2. 11,44
Dafna1 [17]
The GCF of 12, 21, and 30 is 3.
The factors of 12 are: 1, 2, 3, 4, 6, 12
<span>The factors of 21 are: 1, </span>3, 7, 21
<span>The factors of 30 are: 1, 2, </span>3, 5, 6, 10, 15, 30
<span>Then the greatest common factor is 3.
</span>
The GCF of 11, and 44 is 11. 
The factors of 11 are: 1, 11
The factors of 44 are: 1, 2, 4, 11, 44
Then the greatest common factor is 11. 

Hope this helps.
8 0
3 years ago
Read 2 more answers
Your friend brings hot chocolate to school in the cylindrical thermos and drinks from her cylindrical mug shown.
Vesna [10]
Volume=height times area of base
base=circle so area of base=pir^2
ok so solume=height times pi times r^2


1.
thermos, h=10, r=2
therefor
 volume=10pi2^2=
 volume=10pi4=
40pi in^3 is brought to school


2. inside is 4 inches deep
h=4, r=1.5
volume=4pi1.5^2
volume=4pi2.25
volume=9pi
answer is 9pi in^3


3. so find 80% of 9pi
80%=0.8
0.8 times 9pi=7.2pi in^3
each times is 7.2pi in^3


4. ok so this is assuming that you fill the mug to 80% (7.2pi) each time and the remainder is it less or more or equal to half of 7.2pi so

total in thermos=40pi
each pour=7.2pi
40pi-7.2pi-7.2pi-7.2pi-7.2pi-7.2pi=4pi
is 4pi more or less than 7.2pi
7.2pi/2=3.6pi
4pi>3.6pi
it is MORE


1. 40pi in^3
2. 9pi in^3
3. 7.2pi in^3
4. MORE than half
 

4 0
3 years ago
what are two lines that lie within the same plane and never intersect A.) perpendicular lines B.) parallel lines C.) plane ​
Monica [59]

Parallel Lines lie within the same plane but never intersect

Hope this helps!

6 0
3 years ago
Just gotta get the last few done
vampirchik [111]
(x-6)^2 is the answer  
4 0
3 years ago
Read 2 more answers
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