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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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Andy drove 840 miles in 12 hours. How much miles can he drive per hour?
Sergio039 [100]

Answer:

70

Step-by-step explanation:

840 / 12 = 70

7 0
3 years ago
Read 2 more answers
4x+2y=6 please solve for y
harkovskaia [24]

Answer:

y=3-2x

Step-by-step explanation:

Move all terms that don't contain y to the right and solve.

4 0
3 years ago
A company has 7 male and 9 female employees, and needs to nominate 2 men and 2 women for the company bowling team. How many diff
lys-0071 [83]

Answer:

The team can be formed in 756 different ways

Step-by-step explanation:

This is a combination problem since we are to select a set of people from a group. Combination has to do with selection.

for example, if r number of object is to be selected from a pool of n objects, this can be done in nCr number of ways.

nCr = \frac{n!}{(n-r)!r!}

Now If A company has 7 male and 9 female employees, and needs to nominate 2 men and 2 women for the company bowling team, then this can be done in the following way;

7C2 * 9C2

7C2 = \frac{7!}{5!2!} \\= \frac{7*6*5!}{5!*2} \\= 7*3\\= 21ways\\\\similarly;\\\\9C2 = \frac{9!}{7!2!}\\9C2= \frac{9*8*7!}{7!*2} \\9C2 = 9*4\\9C2 = 36

7C2 * 9C2 = 21*36

= 756

The team can be formed in 756 different ways

5 0
3 years ago
NEED HELP ASAP!!
Kaylis [27]

Answer:

20²+21² = x²

841= x²

x= 29

nearest tenth = 30

4 0
3 years ago
Read 2 more answers
I don't want the answer, but I want to know how you got that answer.
anastassius [24]

Answer:

n = 5

Step-by-step explanation:

4n+5n+15=5n+7n\\\\9n+15=12n\\\\9n+15-15=12n-15\\\\-3n=-15\\\\\frac{-3n=-15}{-3}\\\\ \boxed{n=5}

Hope this helps.

8 0
3 years ago
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