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MariettaO [177]
2 years ago
15

A contractor bought 12.6 ft? of sheet metal. He has used 2.1 ft? so far and has $210 worth of sheet metal remaining. The equatio

n 12.6x-2.1x = 210 represents how much sheet metal is remaining and the cost of the remaining amount. How much does sheet metal cost per square foot?​
Mathematics
1 answer:
GenaCL600 [577]2 years ago
3 0

Answer:

$20

Step-by-step explanation:

12.6x-2.1x=210

10.5x=210

x=210/10.5

x=20

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sineoko [7]

Answer:

Incorrect

Step-by-step explanation:

We are given the equation:

\displaystyle \large{|3x+8|-9=-5}

Add both sides by 9.

\displaystyle \large{|3x+8|-9 + 9=-5 + 9} \\ \displaystyle \large{|3x+8|=4}

When we want to tell if the absolute equation has solutions or not, we have to simplify in this form first: or isolate the absolute sign.

\displaystyle \large{ |ax + b|  = c}

If c ≥ 0, the equation has solutions.

If c < 0, the equation does not have solutions.

Therefore, it does not always matter if the constant on right side is in negative because if there is a number on the left side then there is a chance that the equation has solutions.

From |3x+8| = 4 is equivalent |3x+8|-9=-5 and the right side is 4 which is positive.

Hence, the equation does have a solution!

3 0
3 years ago
What percent of 50 is 44
PtichkaEL [24]

Answer:

here u go

Step-by-step explanation:

88%

5 0
3 years ago
Read 2 more answers
What is the domain of the function y=2 x-5?<br> O x&gt;-5<br> O x&gt;2<br> O x&gt;5<br> O x&gt;10
antiseptic1488 [7]
That’s a good one Because what is the domain of the function Y equals 2X
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3 years ago
Can someone help please asap
ch4aika [34]

Sn = (a1) x (1 - r^n) / (1 - r)


Substituting the known values:


S5 = (6) x (1 - (1/3)^5) / (1 - 1/3) = 242/27 = 8 24/27 = 8 8/9


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Answer:

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