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Contact [7]
3 years ago
12

Simplify ; 7a+5b-5a-6b

Mathematics
1 answer:
serious [3.7K]3 years ago
8 0
The answer for this is 2a-b
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Write a simplified polynomial expression in standard form to represent the area of the rectangle below.
enyata [817]
A = w × l
A = (2x - 4) (x + 5)
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2x² + 10x - 4x -20
2x² + 6x - 20
3 0
3 years ago
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The product of -3 and -7 is positive.<br><br><br> True False
dmitriy555 [2]
True!! If you multiply -3 x -7 you get 21!!
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3 years ago
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Find the area of a plane figure bounded by lines
natulia [17]

Answer: 4.5

<u>Step-by-step explanation:</u>

First, find the points of intersection by solving the system.

y = x² + 2x + 4

y = x + 6

Solve by substitution:

x² + 2x + 4 = x + 6   ⇒   x² + x - 2 = 0   ⇒   (x + 2)(x - 1) = 0   ⇒   x = -2, x = 1

Now, integrate from x = -2 to x = 1

\int\limits^1_2 {(x+6)-(x^{2}+2x+4) } \,    <em>the bottom of the integral is -2 </em>

= \int\limits^1_2 {x+6-x^{2}-2x-4 } \,

= \int\limits^1_2 {-x^{2}-x+2 } \,  

= \frac{-x^{3}}{3} - \frac{x^{2}}{2}+2x\int\limits^1_2 {} \,

= (\frac{-1^{3}}{3} - \frac{1^{2}}{2}+2(1)) - (\frac{-(-2)^{3}}{3} - \frac{(-2)^{2}}{2}+2(-2))

= (\frac{-1}{3} - \frac{1}{2} +2) - (\frac{8}{3} -\frac{4}{2} -4)

= \frac{-9}{3} + \frac{3}{2} +6

= -3 + 1.5 + 6

= 4.5


3 0
3 years ago
If x &lt; 5, then which of the following must be true? - x &lt; 5 - x &gt; -5 - x &gt; 5 - x &lt; -5
Nat2105 [25]

Answer:

-x > -5

Step-by-step explanation:

Let's start with a positive number less than 5.

4<5

likewise when applied to -x> -5

-4>-5

4 0
3 years ago
Complete the statement to describe the expression a b c + d e f abc+defa, b, c, plus, d, e, f. the expression consists of terms,
DedPeter [7]

The statement of expressions is two terms and three factors.

<h3>The statement and expressions:</h3>

According to the question, the statement that teaches us about expression is made up of two terms, each of which has three factors.

The ABC and DEF expressions define the expression of two terms, each of which comprises two elements.

As a result, the answer is two terms and three factors.

  • The terms of the expressions are connected by mathematical signs like addition and subtraction.
  • Variables are combined using multiplication signs to form the factor.
  • The three components are found in each word.
  • Looking at the first term ABC, we can see that it has three variables, a, b, and c, which is multiplied together.

Therefore, the answer is two terms and three factors.

Know more about an expression here:

brainly.com/question/723406

#SPJ4

8 0
2 years ago
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