4 years ago

Wieght of a sunday newspaper

Mathematics

1 answer:

Daniel [21]4 years ago

8 0

5.4 for New York times

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how many gallons of a 70% antifreeze solution must be mixed with 90gallons of 15% antifreeze to get a mixture that is 60% antifr

Alisiya [41]

Here is your answer

Add 315 gallons of 70% antifreeze to 90 gallons of 25% antifreeze to make a 60% mixture.

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3 years ago

The sum of three numbers is 110. The third number is 3 times the first. The second number is 5 more than the first. What are the

g100num [7]

Answer:

The numbers are 63, 26, & 21

Step-by-step explanation:

110 = 3x + (5 + x) + x

105 = 3x + 2x

105 = 5x

21 = x

Plug it back into the first equation to find your values

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3 years ago

Which algebraic expression is equivalent to -2(4x -5y - 5x)

aleksley [76]

Hope this will help u...

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3 years ago

Simplify the following fraction by putting it in lowest terms or by performing the indicated operation.

netineya [11]

(2x-1)(2x-1)
(4x^2+2x+1)(2x-1)

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3 years ago

Solve the triangle A=21 C=105 c=5

gregori [183]

Answer:

Granted that uppercase letters are the angles measurements and lowercase letters are the side lengths. I also was unable to round as I don't know to what decimal you need to round to.

First to find the measure of angle B, we must subtract A and C from 180

$180-21-105=54$

B=54

Next, we can use the law of sines in order to find the measures of a and b

As a reminder, The law of sines is

$\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}$

First, lets solve for b

$\frac{b}{sin54}=\frac{5}{sin105} \\\\b=\frac{(5)sin54}{sin105}\\\\b=4.187780119$

Next lets solve for a

$\frac{a}{sin21}=\frac{5}{sin105} \\\\a=\frac{(5)sin21}{sin105}\\\\a=1.85504901$

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3 years ago