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9966 [12]
3 years ago
12

2(x+2)-7=6x-4(1+x) solve for x

Mathematics
2 answers:
grigory [225]3 years ago
5 0

Answer:

x has no solution

Step-by-step explanation:

2x+4-7=6x-4-4x

2x-3=2x-4

-3=-4

pshichka [43]3 years ago
4 0

Answer:

No solution

Step-by-step explanation:

2(x+2) -7 = 6x - 4(1+x)                  (Distribute 1st)

2x + 4 - 7 = 6x - 4 - 4x

2x - 3 = 2x - 4                         (Combine like-terms)

2x - 2x = -4 + 3

0 = -1

No solution

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Domain of the function of a graph with coordinates (-3,-2)
olga2289 [7]

Answer:

Domain is -3

Step-by-step explanation:

Given that coordinate of a graph is (-3, -2)

We have to find out the domain.

We know that if A and B are two sets, a mapping from A to B is the subset of cartesian product AxB.

Domain is the set of values of A which have images in B.

Use the above definition.

We have A = {-3,...} and B = {-2,....}

The mapping is from -3 to -2

Hence domain is -3

6 0
3 years ago
In a game of tug of war, your team changes -2 1/2 feet in position every 10 seconds. What is your change in position after 40 se
Airida [17]
The answer is -10

-2 1/2 x 4 = -10
8 0
3 years ago
consider the following equations: -x-y=1 y=x+3 if the two equations are graphed, at what point do the lines representing the two
Oksana_A [137]

Answer:

(-2, 1)

Step-by-step explanation:

consider the following equations: -x-y=1 y=x+3

For the lines to intersect, the  values must be the same

-x-y=1

x + y = -1

y = -x - 1

Equating the y values

-x - 1 = x+ 3

-x-x = 3 + 1

-2x = 4

x = 4/-2

x = -2

Substitute x = -2 into y = x+3

y = -2 + 3

y = 1

Hence the required coordinate is (-2, 1)

7 0
3 years ago
A certain mathematics contest has a peculiar way of giving prizes. Five people are named as Grand Prize winners, but their finis
bixtya [17]

Answer:

The number of complete award announcements possible are 19,554,575,040.

Step-by-step explanation:

Combination is the number of ways to select <em>k</em> items from <em>n</em> distinct items when the order of selection does not matters.

Whereas permutation is the number of ways to select <em>k</em> item from <em>n</em> items when order of selection matters.

The number of people entering this year is 22.

The number of ways to select 5 people for Grand Prize is, {22\choose 5}=\frac{22!}{5!(22-5)!} =26334.

The remaining number of people is, 22 - 5 = 17.

It is provided that the other 5 are selected according to an order.

The number of ways to select other 5 winners is,

^{17}P_{5}=\frac{17!}{(17-5)!} =742560

The total number of ways to select 10 winners of 22 is:

Total number of ways = 26334 × 742560 = 19,554,575,040.

6 0
3 years ago
In a local city, the temperature at noon is -3C The temperature is expected to decrease by 2.5C each hour until the temperature
LiRa [457]

Writing the equation that governs this situation:


-3C - (2.5C/hr)x = -18C


Simplifying, -3 - 2.5x = -18, or 3 + 2.5x = 18


Combining like terms: 2.5x = 18-3 = 15


Then x = 15/2.5 = 6. The temp. will reach -18C after 6 hours.

7 0
4 years ago
Read 2 more answers
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