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Sunny_sXe [5.5K]
3 years ago
7

What property is 7. (6 - 1) 7.6 - 7.1

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
4 0

Answer:

associatve property

Step-by-step explanation:

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1b. True or False? Explain your answer without multiplying. 2 points
natita [175]

Answer:

  • False

Step-by-step explanation:

<h2>Solution 1</h2>

The easy way is to compare the leading terms or constants.

<h3>LHS</h3>

<u>The leading term is:</u>

  • 2x*5x² = 10x³

<u>The constant is:</u>

  • (-3)*6 = -18
<h3>RHS</h3>

<u>The leading term is:</u>

  • 3x*5x² = 15x³

<u>The constant is:</u>

  • (-2)*6 = -12

We see both the leading terms (10x³ ≠ 15x³) and constants (-18 ≠ -12) are different so the equation is false.

<h2>Solution 2</h2>

<u>We see one of the factors is same on both sides: </u>

  • 5x² - 2x + 6

<u>The other factors are:</u>

  • 2x - 3 = 3x - 2

Since this factor is different on both sides, the equation is false

3 0
3 years ago
Read 2 more answers
Use the quadratic formula to solve x2 + 9x + 10 = 0.<br> What are the solutions to the equation?
vampirchik [111]

Answer:

\large\boxed{x=\dfrac{-9\pm\sqrt{41}}{2}}

Step-by-step explanation:

\text{The quadratic formula of}

ax^2+bx+c=0

\text{If}\ b^2-4a0,\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\=========================================

\text{We have}\ x^2+9x+10=0\\\\a=1,\ b=9,\ c=10\\\\\text{substitute:}\\\\b^2-4ac=9^2-4(1)(10)=81-40=41>0\qquad _{\text{two solutions}}\\\\\sqrt{b^2-4ac}=\sqrt{41}\\\\x=\dfrac{-9\pm\sqrt{41}}{2(1)}=\dfrac{-9\pm\sqrt{41}}{2}

5 0
3 years ago
Read 2 more answers
Help someone please I’m not asking fa much
tatiyna

Answer:

5^15

Step-by-step explanation:

Multiply the exponent that is inside the parentheses (3) by the exponent on the outside (9) to get 27 for the exponent, then subtract the exponent that is divided (12) to get an exponent of 15, which makes the answer 5^15.

3 0
3 years ago
Kim counted 246 cars on her last trip. 2/5 of the cars were red. what decimal represents the faction of the cars that were red?
vodomira [7]
The answer is 0.4, hope this helps
5 0
3 years ago
Read 2 more answers
Find the sum of these polynomials.(5x2 - 4x + 2) + (3x² + 9x-8)=
dexar [7]

we have the expression

(5x^2-4x+2)+(3x^2+9x-8)

step 1

Group similar terms

\begin{gathered} (5x^2+3x^2)+(-4x+9x)+(2-8) \\ Combine\text{ like terms} \\ 8x^2+5x-6 \end{gathered}<h2>The answer is option A</h2>
5 0
1 year ago
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