All categories

3 years ago

Is the equation a true statement when x -3 is -3 a solution to the equation 6x + 5=5x + 8 +2x

Mathematics

2 answers:

Degger [83]3 years ago

7 0

Answer:

go to the link

Step-by-step explanation:

https://answers.yahoo.com/question/index?qid=20070620063730AAaJuXa

These questions are SOOO easy, but I just don't have a clue. (don't even know if they technically are algebra they are that easy).

x² - 8x - 20 =

(x+10) (x-2)

Thats what I got for that answer (lucky guess) but how do you know which side each sign goes on.. ie (x+10)(x-2) or (x+2) (x-10)??

Same problem with this question...

(x-6) (x-5) =

x² - 11x + 30

ch4aika [34]3 years ago

7 0

Answer:

Yes, a solution

Step-by-step explanation:

Plug -3 in for all the x's to see if it is a solution

6x + 5=5x + 8 +2x

6(-3)+5=5(-3)+8+2(-3)

Multiply on the left

-18+5=5(-3)+8+2(-3)

Add on the left

-13=5(-3)+8+2(-3)

Multiply on the right

-13= -15+8-6

Add on the right

-13=-7-6

-13=-13

Because they are equal, -3 is a solution

Hope this helps! :)

You might be interested in

9 3/10 - 5 3/4 as a mixed number in simplest form

Artemon [7]

Answer:

3 1/20

Step-by-step explanation:

First, we will convert the mixed numbers into improper fractions...

9 3/10 (9*10=90+3=93) so the improper fraction is 93/10

5 3/4 (5*4=20+3=23) therefore the improper fraction is 23/4

We then want to make the denominator the same...

93/10 (*4) = 372/40

23/4 (*10) = 230/40

We then put it into the question...

372/40 - 230/40 = 142/40

Lastly, we now need to turn this into a mixed number...

142/40=3.55 so the answer is 3 2/40

3 2/40 in it's simplest form is 3 1/20

Hope this helps!

6 0

3 years ago

Read 2 more answers

4vir4ik [10]

Answer:

Tell in english plss

Step-by-step explanation:

i dont understangd okk

6 0

3 years ago

According to the scatterplot below, which statement is correct? A graph titled Courses Completed versus Remaining Credits Needed

kondaur [170]

Answer:

Option B.

Step-by-step explanation:

It is given that a graph titled Courses Completed versus Remaining Credits Needed to Graduate has courses completed on the x-axis and Credits need to graduate on the y-axis.

Points plotted are (4, 110), (8, 76), (16, 63), (20, 53), (24, 33).

Since, x-axis represents the courses completed, therefore the input, or independent variable is courses completed.

Since, y-axis represents the Credits need to graduate, therefore the output, or dependent variable is Credits need to graduate.

Therefore, the correct option is B.

6 0

3 years ago

Read 2 more answers

Pls help me first get 10 you know

Luba_88 [7]

Option D, 63 cm

Explanation:

The scale of model is of local park is

This means that each dimension of the model is 21 times smaller than the actual park (to be developed in future)

Given -

Depth of the pond centi meter

Depth of the real pond will be 21 times of the depth of the model.

Thus , real pond's depth is equal to

Hence, option D is correct

7 0

3 years ago

If x+y=10 and x-y=4,find the value of x*x-y*y

Irina18 [472]

Hi,
$x^2-y^2=(x+y)*(x-y)=10*4=40$

6 0

3 years ago