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Slav-nsk [51]
3 years ago
11

What is the value of the expression ..... "If RIGHT WILL GIVE BRAINLIST"

Mathematics
1 answer:
laiz [17]3 years ago
5 0

To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations. Example 2.3.

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The square of a positive number is equal to its triple added to 28. What is this number?​
sashaice [31]

hi brainly user! ૮₍ ˃ ⤙ ˂ ₎ა

⊱┈────────────────────────┈⊰

\huge{ \rm{Answer:}}

The roots of the equation are 7 and -4, because 7 - 4 = 3 and 7. - 4 = -28

Step-by-step explanation:

The positive number is equal to 7.

Assuming that the number is equal to "x" we have:

\begin{gathered}x^2 = 3x + 28\\\\x^2 - 3x - 28 = 0\\\\a = 1\\\\b = -3\\\\c = -28\\\end{gathered}

By the sum and product method, we have:

\begin{gathered}S = -b / a\\\\S = -(-3) / 1\\\\S = 3\\\\\end{gathered}

\begin{gathered}P= c / a\\\\P = 28 / 1\\\\P = 28\\\\\end{gathered}

4 0
2 years ago
What is the value of the variable -38 = 2b + 25 - (-7b)
ddd [48]
The variable in this equation is b, therefore we have to calculate the value of b.

-38=2b+25-(-7b)
-38=2b+25+7b
2b+7b=-38-25
9b=-63
b=-63/9
b=-7

Answer: the value of the variable is b=-7

We can check it out this answer:
-38=2b+25-(-7b)
-38=2(-7)+25-(-7(-7))
-38=-14+25-49
-38=-38
4 0
3 years ago
(30 POINTS AND BRAINLIEST FOR BEST)
Afina-wow [57]

Answer:

Everyone would pay 116.66, but one of them would have to pay one cent extra!

Step-by-step explanation:

7 0
3 years ago
Select the correct answer from each drop-down menu
N76 [4]
Lucy borrowed the most books in August (19 is the highest number in the graph.) There are 6 months in which she borrowed fewer than 10 books (February, May, June, July, November, December.)
Tip: do not click on the links, it’s a scam. Also an easier way to get answers quicker is post the picture and then briefly explain the post and not the entire question. :) I hope that helps. Have a great day!
7 0
2 years ago
Read 2 more answers
14. Write an equation of the line using the slope and y-intercept.<br> m = -5, b = -1
Paladinen [302]

Slope-intercept form: y = mx + b

The answer is:

y = -5x - 1

Happy to help!

4 0
3 years ago
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