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skad [1K]
2 years ago
14

Which expression is equivalent to -4(5x - 9) + 6(2x + 5)?

Mathematics
1 answer:
schepotkina [342]2 years ago
7 0

Answer:

-4(5x - 9) + 6(2x + 5)

multiplication of:

(-).(-) = +

(-).(+) = -

(+).(-) = -

(+).(+) = +

-4(5x) -4(- 9) + 6(2x + 5)

(-)(+)4(5x) (-)(-)4(9) (+)(+) 6(2x) (+)(+)6( 5)

-20x  + 36 + 12x + 30

-20x  + 12x + 36 + 30

-8x + 66

Step-by-step explanation:

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Which of the following is a step in simplifying the expression x multiplied by y to the power of 2 over x to the power of negati
Nat2105 [25]

The simplest form of the algebraic expression is x^-4y^-8/x^12y^-12 (Option B)

<h3>What is simplification?</h3>

The term simplification is mathematics refers to the depiction of the expression in its lowest possible format. In the simplest form, the expression can not be simplified further.

Now we have the original expression as;

(xy^2/x^-3y^3)

The only possible step in the expansion is to open up the bracket by the laws of indices and we get;

x^-4y^-8/x^12y^-12 (Option B)

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6 0
2 years ago
Write the equation of a line with an undefined slope and point (1, 7).
Sonja [21]

Answer:

The equation of straight line is x = 1

Step-by-step explanation:

<u>Step </u>:-

The equation of straight line having slope 'm' and passing through the point

(x_{1} ,y_{1} ) is y-y_{1} = m (x-x_{1} )

Slope of horizontal line(that is x-axis) is m = 0

slope of vertical line (that is y-axis) is m is not defined

The equation of straight line having slope is not defined and passing through the point (1,7).

y-7 = \frac{1}{0} (x-1)

cross multiplication we will get equation

(y-7)(0)=1(x-1)

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The equation of straight line is x = 1

4 0
3 years ago
2 times what equals 36?
Tanya [424]
18 ,2x18=36 hope i helped
3 0
3 years ago
What is 4x-7xy+9xy-7pq
konstantin123 [22]
Answer:  " 4x + 2xy - 7pq " .
___________________________________
Explanation:
___________________________________
Given:  
" <span>4x - 7xy + 9xy - 7pq " ;  Simplify the expression;
___________________________________
  Combine the "like terms:
___________________________________
       -7xy + 9xy = 2xy ;
___________________________________
Now, rerewrite the expression, substituting the "-7xy + 9xy";  with " + 2xy" ;
___________________________________
   </span>→ " 4x + 2xy - 7pq " .
<span>___________________________________


</span>
4 0
3 years ago
Zach spent 2/3 hour reading on Friday a 11/3 hlurs reading on Saturday. How much more time did he read on Saturday tha on Friday
mr Goodwill [35]

notice, the denominator for each fraction is the same, thus the LCD is just 3.

\bf \cfrac{11}{3}-\cfrac{2}{3}\implies \cfrac{11-2}{\stackrel{LCD}{3}}\implies \cfrac{9}{3}\implies 3

6 0
3 years ago
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