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SOVA2 [1]
3 years ago
13

What is the reason for each step in the solution of the equation?

Mathematics
2 answers:
MA_775_DIABLO [31]3 years ago
6 0
<span>2x-1=4(x+1) Given. This is the expression you were originally given. 2x-1=4x+4 Distributive Property You distributed the 4 in the subexpression 4(x + 1) to make 4x + 4 2x=4x+5 Addition or Subtraction Property of Equality You added 1 to both sides of the equation. â’2x=5 Addition or Subtraction Property of Equality You subtracted 4x from both sides of the equation. x=-5/2 Multiplication or Division Property of Equality You divided both sides by -2.</span>
Mkey [24]3 years ago
4 0

Answer:

2x - 1 = 4(x + 1)      Given

2x - 1 = 4x + 4       Distributive Property

2x = 4x + 5           Addition or Subtraction Property of Equality

-2x = 5                  Addition or Subtraction Property of Equality

x = -5/2                Multiplication or Division Property of Equality


- I took the test, these should be right.


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How would I solve for this? What’s the answer?
9966 [12]
To find G of F first solve f(x) by replacing x with -7

F(x) = x^2 +6
= -7^2 +6
= 49 +6 = 55

So f(x) = 55

Now replace the X in the g(x) equation with 55

g(x) = x+8 / x

= 55+8 / 55

= 63/55

The last choice is the correct answer.
5 0
3 years ago
Read 2 more answers
What is the density of a 60-gram pyramid with rectangular base 5 cm x 7 cm and height 9 cm?
JulijaS [17]

Answer:

0.571428571429 grams per cm³

Step-by-step explanation:

density = mass/volume

Let’s calculate the volume V of the pyramid :

V = (1/3)×base×height

   = (1÷3)×(5×7)×9

   = 105 cm³

Then

The density = mass/volume

                    = 60÷105

                    = 0.571428571429

4 0
2 years ago
9.4+9.4-2.25+2.2-5.9+86.10+12.98-62.6
Luba_88 [7]

Answer:

49.33

Step-by-step explanation:

8 0
3 years ago
A triangle has two sides of lengths 7 and 12. What value could the length of
Norma-Jean [14]

Answer:

A. 7

Step-by-step explanation:

Since the triangle sides are not defined, therefore let the base side have the 12 unit and one of the slant side be 7 unit.

Therefore height of the triangle, h can gotten from the Pythagoras theorem as thus:

7² = (12/2)² + h²

49 = 36 + h²

h² = 49 - 36 = 13

h = √13

knowing the height of the triangle, we can apply same rule to the other unknown slant side, x as thus:

x² = (12/2)² + h²

x² = 36 + 13 = 49

x = √49

x = 7

4 0
3 years ago
√448<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B488%7D%20" id="TexFormula1" title=" \sqrt{488} " alt=" \sqrt{488} " align
bazaltina [42]
The answer is 21.17 or 21.16601049.
8 0
3 years ago
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