3 years ago

If 2x-1/3=-4x then x=

Mathematics

1 answer:

allochka39001 [22]3 years ago

6 0

Answer:

x = 1/18

Step-by-step explanation:

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3 years ago

a quantity of ethanol is cooled from 47.9° C to 12.3°C and releases 3.12 KJ of heat. what is the mass of the ethanol sample?

victus00 [196]

Answer:

35.9 grams

Step-by-step explanation:

We use the formula:

$q=m*C_p*\Delta T$

Where

q is heat released

m is mass

C_p is the constant 2.44

ΔT is change in temperature

We put the info in the formula and solve for m (mass):

$q=m*C_p*\Delta T\\-3.12 = m*2.44(12.3-47.9)\\-3.12*10^3=m*(-86.864)\\m=35.9$

The mass of ethanol is 35.9 grams

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4 years ago

Craig bought 8 folders and notebooks for school. Folders cost 0.50 cents and notebooks cost 1.50.Craig spent a total of 6 dollar

Sergeeva-Olga [200]

Answer:

4 of each

Step-by-step explanation:

1.50 x 4 =6

.50 x 4 =2

he bought 4 folders and 4

3 0

2 years ago

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Need help plz im big dum dum -_-

melamori03 [73]

Answer:

603

Step-by-step explanation:

First divide to get unit rate:

737/11= 67

Then multiply:

67*9= 603

Hope this helps! :)

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3 years ago

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