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Ratling [72]
2 years ago
8

The Commutative Property states that the order of terms in an expression does not affect the outcome. Which of the following ope

rations does the Commutative Property apply? select all that apply
A. addition
B. subtraction
C. multiplication
D. division
Mathematics
1 answer:
tigry1 [53]2 years ago
4 0
I think the answer is B
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If a= 2, b= -3 and c= 4 evaluate ab-bc ​
Harrizon [31]

Answer:

ab - bc = 6

Step-by-step explanation:

COMPUTATION:

ab - bc = ?

(2 x -3) - (-3 x 4) = ?

(-6) - (-3 x 4) = ?

(-6) - (-12) = ?

-6 + 12 = 6

Hope this helps!

6 0
2 years ago
Four cookies and three cupcakes code $13.25. Five cookies and two cupcakes cost $11.75. Give the system of equations that could
Kaylis [27]

Answer:

  • cookie: $1.25
  • cupcake: $2.75

Step-by-step explanation:

Let x and y represent the cost of a cookie and a cupcake, respectively.

  4x +3y = 13.25

  5x +2y = 11.75 . . . . . . the system of equations

___

By Cramer's rule:

  x = (3(11.75) -2(13.25))/(3(5) -2(4)) = 8.75/7 = 1.25

  y = (13.25(5) -11.75(4))/7 = 19.25/7 = 2.75

The cost of one cookie is $1.25; the cost of one cupcake is $2.75.

_____

Cramer's rule gives the solution to the system of equations ...

  ax +by =c

  dx +ey = f

as ...

  ∆ = bd -ea

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7 0
3 years ago
What type of symmetry does this figure have?
BARSIC [14]
Rotational symmetry. Because you can rotate it and put a line through it and it would all look the same
4 0
3 years ago
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I Prove that Cos(90-θ)/1+sin(90-θ) +1+sin(90-θ) /cos(90-θ) =2
USPshnik [31]
Okay,

so first you gotta know that cos(90-x) is equal to sinx and sin(90-x) is equal to cosx!!
Now all you gotta do is replace the cos(90-x) to sinx in the numerator and sin(90-x) to cosx in the denomenator inorder to make the numerator all into sin and denomenator all into cos.
After that, open up the brackets and solve...
At the end you'll hopefully get something like this :( 1+sin90 ÷ 1+cos90 )
And since sin90 is 1 (put it in the calculator!) and cos90 is 0, you'll get 2÷1 which is equals to 2!!

Hope this helped!  :)
6 0
3 years ago
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Which exponential function has an x-intercept?
klasskru [66]

Answer:

therefore f(x)=100x-5-1 has an x-intercept

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