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SVETLANKA909090 [29]
3 years ago
7

A tank holds 50% of a mixture of acid in water that is 30% acid if 20 gallons of gas are added to the mixture what is the percen

t of acid in the mixture
Mathematics
1 answer:
ehidna [41]3 years ago
3 0
Parts per whole: 50(.30) + 20 is the part that is acid 50 + 20
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1. tan a = cot(a + 10°)
Temka [501]

Answer:

a=40+90n

Step-by-step explanation:

Use a cofunction identity on the right hand side or left hand side...

So \tan(a)=\cot(90-a).

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\tan(a)=\cot(a+10)

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Since cotangent has period 180 degrees, we can also write this as:

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a=40+90n

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3 years ago
When 1760 is divided into 14 equal parts, the remainder is 6. What is a correct way to write the quotient?
Ilia_Sergeevich [38]

Division is the inverse of multiplication; therefore it depends on knowing the multiplication table.


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The product of two rational numbers:
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Answer:

"The product of two rational numbers is rational."

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Step-by-step explanation:

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