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Shalnov [3]
3 years ago
9

What do we mean by the value of an expression?

Mathematics
1 answer:
Alexxx [7]3 years ago
7 0

We have learned that, in in an algebraic expression, letters can stand for numbers. When we substitute a specific value for each variable, and then perform the operations, it's called evaluating the expression. Let's evaluate the expression 3y + 2y when 5 = y.

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Add the mixed number fractions. Simplify, if possible.
Vladimir79 [104]

Answer:

8 4/15

Step-by-step explanation:

Rewriting our equation with parts separated

= 5 + 2/3 + 2 + 3/5

Solving the whole number parts

5 + 2 = 7

Solving the fraction parts

2/3 + 3/5 = ?

Find the LCD of 2/3 and 3/5 and rewrite to solve with the equivalent fractions.

LCD = 15

10/15 + 9/15 = 19/15

Simplifying the fraction part, 19/15,

19/15 = 1 4/15

Combining the whole and fraction parts

7 + 1 + 4/15 = 8 4/15

6 0
3 years ago
What are the steps to solve this problem? 0.000027 divided 0.000009. explain how to use scientific notation?
Neporo4naja [7]
Put it into standard form so you would have

27x10¯6 divided by 9x10¯6

Then you can divide the numbers so 27/9 = 3

Then to divide the powers you just take them away so - 6--6 = - 6 +6 = 0

Therefore the answer is just 3
6 0
3 years ago
A suit is sold for $68 while marked at $80. What<br> is the rate of discount?
MaRussiya [10]
15% is the rate of discount

85% of 80 is 68

And 100-15= 85.

6 0
2 years ago
Noah earned w dollars over the summer. Mai earned x dollars, which is y dollars
Aneli [31]

Answer:

what is the question please explain

5 0
3 years ago
What is the slope of a line perpendicular to the<br> graph of the equation 5x - 3y = 2?)
Advocard [28]

The slope of a line perpendicular to the

graph of the equation 5x - 3y = 2 is -3/5.

<h3>How to find the slope of a line?</h3>

given that the equation is 5x - 3y = 2.

now write the equation in standard form y = mx + b

then -3y = 2 - 5x

y = -2/3 + 5x/3

y = 5/3x - 2/3

m 1*m 2 = - 1 is the formula for the slopes from a pair of perpendicular lines. where the slopes of the lines are m 1 and m 2.

Here m1 = 5/3 and m2 = -3/5.

Hence,the slope of a line perpendicular to the

graph of the equation 5x - 3y = 2 is -3/5.

Learn more about slope of the line from here:

brainly.com/question/16949303

#SPJ9

3 0
1 year ago
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