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slavikrds [6]
3 years ago
8

How do you write four and 13 twentyeths as a decimal

Mathematics
2 answers:
deff fn [24]3 years ago
7 0
4.65
13 ÷ 20 is 0.65, just add the 4
Len [333]3 years ago
3 0
I agree If you 13 ÷ 20 which would equal 0.65 you add 4 and your answer would be 4.65.
Hope that helps! :-)
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Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.
Anarel [89]
Dimensions of the room in cm = 2.54 x 12 by 15 x 2.54 by 2.54 x 8.5 = 30.48 by 38.1 by 21.59

Volume of the room in cubic cm = 30.48 x 38.1 x 21.59 cubic cm = 25,072.21 cubic cm

Given that the density of air at room temperature is 0.00118g/cm^3, thus the mass of air in the room = 25,072.21 x 0.00118 = 29.59 g = 0.0296 kg

Given that the lethal dose of HCN is approximately 300 mg HCN per kilogram of air when inhaled, thus the <span>amount of HCN that gives the lethal dose in the small laboratory room is given by 300 x 0.0296 = 8.88 mg.</span>
7 0
3 years ago
What is equivalent to 3squareroot of 8^x
inn [45]

Answer:

3 * 8^(x/2)

Step-by-step explanation:

The third answer choice is the correct one.

Here's how:

3squareroot of 8^x = 3√(8^x)  = 3*(8^x)^(1/2)  =  3 * 8^(x/2)

8 0
3 years ago
Which statement is not always true?
Fed [463]
Statement #3: The product of two irrational numbers is not always irrational.

If you multiply √3 and 1/√3, both irrational numbers that are inverses of each other, you end up getting 1, which is rational.
4 0
2 years ago
Plz solve it
konstantin123 [22]

Answer:

Fgh= -5x^3-^2+45x+9

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

I don't think you can do anything with the second one.

Step-by-step explanation:

8 0
3 years ago
An amusement park sells adult tickets and children’s tickets, with adults tickets costing $5 and children’s tickets costing $3.
Katarina [22]

Answer:

Nine

Step-by-step explanation:

3 dollars for children tickets : x

5 dollars for adult tickets: y

Equation is:

3x+5y=57

Where 57 is the total amount spent

x+y=15  

where 15 is the total number of tickets bought

3x+5y=57

5(x+y)=5(15)

___________________

3x+5y=57

5x+5y=75

minus the equations top to bottom=

-2x= -18

x= -18/(-2)

x=9

He bought a total of 9 children tickets

7 0
3 years ago
Read 2 more answers
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