1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lidiya [134]
3 years ago
13

How do I solve this problem

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
5 0
I'm assuming you want to solve for x.

When solving algebraic equations, there is one principle that you must learn.

The principle is as follows: doing any operation on one side of the equation must be done the same on the other side. For example, if you add 10 to one side of the equation, you also add 10 on the opposite side. This is done to keep the balance or equality of the equation.

We don't just do an operation on both sides of an equation for the sake of it. Every operation we do has a reasoning behind it. We might add 15 to both sides of the equation because one side has a -15 in it and we might want to get rid of it.

Usually, algebraic textbooks will call this process transposing. But, if you want an even fancier and more technical sounding name, you can say, "The Principle Addition of Equality" and "The Multiplication (or Division) of Equality".

For other operations, like taking the square root of an equation, you can simply say, "[name of the operation in present progressive tense] of both sides of the equation".

Now that I showed you one of the most important principles in algebra for solving an equation, let's get back to your original question.

What is the value of x that makes the equation -5 + 3x = 10 true?

We need to get the x variable by itself and everything else on the opposite side. The first operation we could do is add 5 to each side. We do this not only to keep the balance of the equation but to get rid of the -5 on the left-hand side.

-5 + 3x       = 10
-5 + 3x + 5 = 10 + 5
3x               = 15

Great! The -5 is out of the way and we're closer to the answer. We'll have to do one more operation to find the value of x.

When a number and a variable (or a series of variables) are juxtaposed together, that indicates multiplication.

Because the 3 and the variable x are juxtaposed, they are being multiplied and we will have to find an operation to get rid of the 3.

Dividing both sides by 3 will do just this.

3x      = 15
3x / 3 = 15 / 3
x         = 5

We finally arrived at the answer. We did all this by using a simple principle in algebra.

I hope you find my answer immensely helpful and if there is something you don't quite understand, don't be afraid to leave a comment or write a message to me. I'll be glad to be of assistance to you!
zysi [14]3 years ago
4 0
You need to simplify it
lets start with your orgininal equation here:
-5+3x=10
Now lets try and get "x" alone. we will do this by adding 5 to both sides.
-5+3x=10
+5       +5
3x=15
Now we have 3 times "x" equals 15
The next step would be to divide both sides by 3 in order to get "x" alone.
3x=15
x=15/3
x=5


You might be interested in
Glve the values of a, b, and c from the standard form of the equation (2x + 1)(x - 2) =0
Doss [256]

Answer: Decimal- .33333333333

Fraction- 1/3

Step-by-step explanation: 3x-1=0

0+1=1, 1/3 is the answer

4 0
3 years ago
SOLVE THIS QUESTION<br><br>​
Serga [27]

Answer:

Step-by-step explanation:

dfs

3 0
3 years ago
Can someone help me please?
Genrish500 [490]

Answer:

56

Step-by-step explanation:

The angle sum theorem *I think* is that for an n-sided shape, the total sum of its angles is 180(n-2).

The sum of a triangles' angles is 180 degrees.

Therefore 4v-44 = 180.

v - 11 = 45

v = 56 degrees

Note: always check if the answer makes sense

6 0
3 years ago
Read 2 more answers
Find the angle measure to the nearest degree. <br> cos A = 0.7431<br> How do I do this?
svet-max [94.6K]

Answer:

Step-by-step explanation:

If you are looking for a missing angle measure, you use the 2nd button and the cos button.  Make sure, first off, that your calculator is in "degree" mode by hitting the "mode" button and making sure that the "degree" is highlighed and not the "radian".  Then hit "clear".  Once you know that you are in the correct mode, hit "2nd" then "cos" and you will see this on your screen:

cos^{-1}(

Inside the parenthesis you will enter your decimal, so it looks like this now:

cos^{-1}(.7431

You do NOT have to close the parenthesis, but you can if you want to.  Then hit "enter" to get that the angle that has a cosine of .7431 is 42.0038314 or, to the nearest degree, 42

6 0
3 years ago
Brainliest + points!<br><br> Please explain
zepelin [54]

Answer:

C

Step-by-step explanation:

Legs are the sides of an isosceles triangle that aren't the base, so in this case ZX would be the base. This rule is only for isosceles triangles. It doesn't apply to any other type of triangle.

Hope I helped, sorry if I'm wrong!

~Mschmindy

6 0
3 years ago
Read 2 more answers
Other questions:
  • Postulates are statements which require proof.<br><br> True or False
    14·2 answers
  • A standard showerhead dispenses 50 gallons of water in 20 minutes. At this rate, how many gallons of water will a standard showe
    6·2 answers
  • Help please!! Will give brainliest! Find the slope of the line.
    5·2 answers
  • Help please this is 6th grade math
    13·1 answer
  • A lawn care company uses the formula c(h)= 9h+15 to find the cost c to perform services for h hours.
    12·1 answer
  • Confusion plz help me.
    14·2 answers
  • A number cube with the numbers 1 through 6 is rolled. Find the given probability
    6·2 answers
  • Can someone help me ​
    9·1 answer
  • Can someone help me? Will make you the brainiest
    8·1 answer
  • Please help me with number 9 :(
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!