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iragen [17]
3 years ago
6

Help fast plsssssssssss

Mathematics
2 answers:
Vilka [71]3 years ago
8 0

Answer:

- and -. =+ so-9+12=3

Step-by-step explanation:

the minus changes to plus and then we solve

bearhunter [10]3 years ago
4 0
-9-(-12)=-9+12=3
-9-12=-9+(-12)=-21
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A rectangular sheet of paper is 25/2cm long and 32/3 cm wide. Find its perimeter. *​
Zina [86]

Answer:

46.3cm

Step-by-step explanation:

  • perimeter is length around shape
  • 25/2 multiply by 2 becoz it's got two equal sides
  • 32/3 multiply by two for the other equal sides
  • add answers together to give you
  • 46.3cm
3 0
2 years ago
Read 2 more answers
PLEASE I NEED HELP
Brums [2.3K]

Answer:

9

Step-by-step explanation:

5 0
3 years ago
Maria has added 2 liters of pure alcohol to 8 liters of a 48% alcohol solution. What is the alcohol concentration of the resulti
ss7ja [257]

Answer:

The alcohol concentration of the resulting solution is 58.4%

Step-by-step explanation:

- At first we must to find the quantity of pure alcohol in the 8 liters

∵ The alcohol concentration is 48% in 8 liters

∴ The quantity of pure alcoholic = \frac{48}{100}*8=3.84 liters

- She added 2 liters pure alcohol to the solution that means the solution

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∴ The quantity of pure alcohol = 2 + 3.84 = 5.84 liters

∴ The resulting solution = 2 + 8 = 10 liters

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∵ The quantity of pure alcohol = 5.84 liters

∵ The resulting solution = 10 liters

∴ The concentrate of alcohol = \frac{5.84}{10}*100 % = 58.4%

The alcohol concentration of the resulting solution is 58.4%

5 0
3 years ago
Read 2 more answers
What is 5/9 times 32?
DIA [1.3K]
5/9* 32
= (5*32)/9
= 160/9
= (153+ 7)/9
= 153/9+ 7/9
= 17+ 7/9
= 17 7/9

The final answer is 17 7/9~
7 0
3 years ago
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Vaselesa [24]

Answer:

b. 4m

Step-by-step explanation:

congruent polygons means same shape, size, angles, and sides.

8 0
3 years ago
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