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snow_tiger [21]
3 years ago
10

Which of the following equations must be true? A k +5 (3 – 1) = 15+ k B) 3+ 7k 21+ 3k C) 5 2k = 3K © 5 D) 5 (7 + k) = 35 + 5k​

Mathematics
1 answer:
Lina20 [59]3 years ago
7 0

Answer:

D is the correct answer

im sure

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Which of the following is an inequality sentence?
ziro4ka [17]

Answer:

C. x

Step-by-step explanation:

  • Option A [x+5=20]tells us that: When we add 5 to a variable x, we get 20. As it has a unique value for x and is completely equal to it(i.e. 15), It is an equality.
  • Option B[x=5] tells us that: A variable x equals to 5. Hence, as x is unique for 5 and is wholly equal to it, it's an equality too.
  • Option C[x tells us that: A variable x isn't 5 but lesser than it. As we cannot equate it to 5, nor we are given the nature of the variable x, it is an Inequality.
  • Option D[x+5] is an expression; It can't be called an equation or an inequality unless we relate it with another expression.

3 0
3 years ago
Read 2 more answers
Which values of x are solutions of the equation below
Mandarinka [93]

Answer:

x = 3.3 and -0.3

Step-by-step explanation:

Given the expression

1/x-4 + x/x-2=2/x^2-6x+8

Find the LCM

x-2+x(x-4)/(x-4)(x-2) = 2/x^2-6x+8

Since the denominator, are the same they cancels out

x +1 + x(x-4) = 2

x+1 + x²-4x = 2

x²-3x + 1 - 2 = 0

x² - 3x - 1 = 0

Factorize

x =3±√9+4/2

x =3±√13/2

x = 3±3.6/2

x= 6.6/2 and -0.6/2

x = 3.3 and -0.3

4 0
3 years ago
Simplify the product of
tankabanditka [31]

Answer:

2

Step-by-step explanation:

(3+\sqrt{7} )(3-\sqrt{7} )\\\\Now we Can Use Identity (a^{2} -b^{2} =(a+b)(a-b)\\a=3     \\ b=\sqrt{7} \\\\3^{2}-\sqrt{7} ^{2}  \\9-7=2

Hope it helps Pls mark as Brainliest!!!

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Car A travels 185 miles in 8 hours. Car B travels
svetoff [14.1K]
Car B because 334 divided by 5= 41 mph
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Solve for k, the constant of variation, in a joint variation problem where y = 520, x = 5, and z = 6.5
kobusy [5.1K]
520/104=5/1=6,5/1,3=k, where k=5


3 0
3 years ago
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