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Jet001 [13]
3 years ago
8

3/4(8x-4)=7x+2 This is a linear equation please help!

Mathematics
2 answers:
aleksandrvk [35]3 years ago
4 0

Simplify the left hand side by multiplying the terms in the parenthesis by 3/4, i.e. divide them by 4 and multiply them by 3:

\dfrac{3}{4}(8x-4)=7x+2 \iff 3(2x-1)=7x+2 \iff 6x-3 = 7x+2

Subtract 6x from both sides:

-3=x+2

Subtract 2 to both sides:

x=-5

mixas84 [53]3 years ago
3 0
Distribute 3/4 into the parentheses, set the equation equal to each other. subtract 7 from both sides of the x’s equation and then solve.
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Which expressions below are equivalent to –3(0.15 – 0.2 + 0.25p) ? Please help, thanks 0.15 – 0.75p –0.45 – 0.6 + 0.75p –3(–0.05
user100 [1]

Given:

The expression is

-3(0.15-0.2+0.25p)

To find:

The equivalent expression.

Solution:

We have,

-3(0.15-0.2+0.25p)

It can be written as

=-3(-0.05+0.25p)

So, option C is correct.

=-3(-0.05)+(-3)(0.25p)

=0.15-0.75p

So, option A is correct.

The given expression can be written as

=-3(0.15)+(-3)(-0.2)+(-3)(0.25p)

So, option D is incorrect.

=-0.45+0.6-0.75p

So, option B is incorrect.

Therefore, the correct options are A and C.

4 0
3 years ago
How many solutions does this system of equations have?
erastovalidia [21]

Answer:

exactly one

Step-by-step explanation:

The system of linear equations have:

one solution, infinitely many solutions or no solution.

One solution if the lines intersect.

Infinitely many solutions if the lines are the same (overlap)

There is no solution if the lines are parallel (they do not have a common point).

In the graph, two lines intersect. Therefore, the system of equations has one solution (0, 3).

6 0
3 years ago
According to a center for disease​ control, the probability that a randomly selected person has hearing problems is 0.157. The p
Yuki888 [10]

According to a center for disease​ control. We can’t compute the probability.

<u>SOLUTION: </u>

Given that, According to a center for disease control,  

The probability that a randomly selected person has hearing problems is 0.157.  

The probability that a randomly selected person has vision problems is 0.096.  

We have to find whether we can compute the probability of randomly selecting a person who has hearing problems or vision problems by adding these probabilities or not?  

The answer is no, because hearing and vision problems are not mutually exclusive.

So, some people have both hearing and vision problems.

These people would be included twice in the probability.

Hence, we can’t compute the probability.

4 0
3 years ago
Need some help here IMMEDIATELY!! :(
ExtremeBDS [4]

Answer: C option

Step-by-step explanation:

Since the drawing is 5x more than real object then we have to divide the numbers

a= 35/5 = 7

b= 30/5 = 6

c= 15/3 = 3

7 0
2 years ago
How many solutions does the system x + y = 3 and 2x + 2y = 5 have?
Nataliya [291]
<span>y=-x+5/2..................(2) 
the slopes of equations (10) & (2) are same and the intercepts are different 
so the lines are parallel.
it has no solution </span>
6 0
3 years ago
Read 2 more answers
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