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larisa [96]
3 years ago
14

-5 · 12 = -5 · 12 = -5 · 12 = -5 · 12 =

Mathematics
2 answers:
Inessa05 [86]3 years ago
6 0

Answer:

-60 if you meant all of them its -180

Step-by-step explanation:

avanturin [10]3 years ago
3 0
You add them all together
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You need 660 mL of a 40% alcohol solution. On hand, you have 35% alcohol mixture. You also have a 95% alcohol mixture. How much
ozzi

Answer:

A. 605 mL of the 35% solution

B. 55 mL of the 95% solution

Step-by-step explanation:

It is given that, you need 660 mL of a 40% alcohol solution. On hand, you have 35% alcohol mixture. You also have a 95% alcohol mixture.

Let x and y be the amount of 35% alcohol solution and 95% alcohol solution (in mL) respectively.

So,

Amount equation: x+y=660        ...(1)

Alcohol equation : 0.35x+0.95y=0.40(660)\Rightarrow 0.35x+0.95y=264     ...(2)

On solving (1) and (2), we get

0.35(660-y)+0.95y=264

231-0.35y+0.95y=264

0.6y=264-231

y=\dfrac{33}{0.6}

y=55

Now, substitute y=55 in (1).

x+55=660  

x=660-55  

x=605  

Therefore, we need 605 mL of the 35% solution  and 55 mL of the 95% solution.

4 0
3 years ago
PLEASE HELP GEOMETRY!!!
aliina [53]
The answer would be A
8 0
3 years ago
A hot air balloon holds 1,592 cubic meters of helium. The density of helium is 0.1785 kilograms per cubic
yuradex [85]

Answer: 285.2 kg

Step-by-step explanation:

Given

The volume of helium in the balloon is V=1592\ m^3

The density of the helium is \rho =0.1785\ kg/m^3

Mass of the helium gas is given by the product of density and volume

\Rightarrow M=\rho \cdot V\\\Rightarrow M=0.1785\times 1592\\\Rightarrow M=285.2\ kg

Thus, the mass of gas is 285.2 kg

3 0
3 years ago
Help ..........................................​
nalin [4]

Answer:

c. 45d+.25m

Step-by-step explanation:

3 0
3 years ago
How do you find range
Tamiku [17]
First order the data from least to greatest, then subtract the smallest value from the largest value in the set.
5 0
3 years ago
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