2 years ago

How do perform the equation x-(4x-2y)-5y

Mathematics

1 answer:

cluponka [151]2 years ago

7 0

Answer:

-3x - 7y

Step-by-step explanation:

x - (4x - 2y) - 5y

x - 4x - 2y - 5y

Combine like terms

x - 4x = -3x

-2y - 5y = -7y

Now, we have our final answer:

-3x - 7y

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I need help with this proof, the given and prove are at the top. Plzzzz help

Goshia [24]

Answer: The proof is mentioned below.

Step-by-step explanation:

Here, Given : m∠AOC = 160° m∠AOD= (3x-10)° and m∠ DOC= (x+14)°

Prove: x= 39°

Statement Reason

1. m∠AOC = 160°, m∠AOD= (3x-10)° 1. Given

and m∠ DOC= (x+14)°

2. m∠AOD+m∠DOC=m∠AOC 2. Because OD divides ∠AOC

into ∠AOD and ∠DOC

3. (3x-10)° +(x+14)°= 160° 3. By substitution

4. 4x+4 = 160° 4. By equating like terms

5. 4x= 156° 5. By subtraction property

of equality

6. x= 39° 6. By division property of equality

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2 years ago

Consider this expression 5/6(1/2x+6)-3x<br> What is the value of the expression evaluated for x=12

just olya [345]

ANSWER

The correct answer is $-26$

EXPLANATION

The expression given to us is,

$\frac{5}{6}( \frac{1}{2}x+ 6)-3x$

We plug in $x=12$ . That means we substitute 12 wherever we see x to obtain,

$\frac{5}{6}( \frac{1}{2}\times 12+ 6)-3\times 12$

We simplify the parenthesis first to obtain,

$=\frac{5}{6}( 6+ 6)-36$

$=\frac{5}{6}( 12)-36$

$=5\times 2-36$

$=10-36$

$=-26$

Hence the expression evaluates to $=-26$

7 0

3 years ago

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What is the capacity of the cube in liters?

Yanka [14]

Capacity=L^3
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2 years ago

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Javier is cooling a liquid in a science lab. The liquid starts at 85 degrees, and he cools it 3.5 degrees every minute for 12 mi

bija089 [108]

85- (3.5*12)

* means times

I think this is correct.