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vesna_86 [32]
3 years ago
8

Noah and Audrey are simplifying the expression 5x-4+x+2, whos is wrong and why;

Mathematics
1 answer:
tigry1 [53]3 years ago
3 0
5x - 4 + x + 2...combine like terms
6x - 2

Noah is wrong...he obviously forgot to add the x

write an expression that contains 3 terms : 6x^2 + 5x - 2
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Please help due tomorrow
mel-nik [20]

Answer: x= 2.5, y = 10

Step-by-step explanation:

<u><em>I'm going to assume that these photocopies are proportional in relations to each other.</em></u>

If they're proportional, you can set up two proportions:

1) \frac{x}{5} =\frac{3}{6} \\\\2) \frac{5}{y} =\frac{3}{6}

And cross-multiply:

1) 6x = 5*3 \\\\2) 3y = 5*6

Then solved for x and y:

1) 6x = 15\\x=\frac{15}{6} =\frac{5}{2} =2.5 \\\\2) 3y = 30\\y=\frac{30}{3} =10

5 0
3 years ago
Solve 3x−5 = 9.<br><br> x = −3<br> x = 2<br> x = 7<br> x = 8
Airida [17]
I hope this helps you




3x-5+5=9+5


3x=14


x=4,66666....
8 0
4 years ago
Read 2 more answers
Which of the following statements represents a mathematical expression?
4vir4ik [10]
A because there is a difference between a expression and equation. Expressions don’t have a equal sign or an answer. But equations have an equal sign and an answer. So because everything else has an answer or equal sign, the correct answer would be A. Hope this helps!
5 0
3 years ago
Read 2 more answers
15. Which statement explains why 30 is considered an irrational number?
Strike441 [17]

Consider the given number is \sqrt{30} in question as well as in options.

Given:

\sqrt{30} is considered as an irrational number.

To find:

The reason for given statement.

Solution:

We have,

\sqrt{30}=5.47722557505...

When evaluated, \sqrt{30} results in a nonterminating (infinite digits after decimal) and nonrepeating decimal, which  is considered an irrational number.

Therefore, the correct option is C.

6 0
3 years ago
How do I solve 5x - 4 = -19
ira [324]
Undo what has been done to the variable. That means to do the opposite done to the variable.
5x-4=-19
+4=+4
5x=-15
5 is being multiplied to the variable so you divide it from both sides.
x=-3
7 0
3 years ago
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