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
Margarita [4]
3 years ago
9

What is the answer to 4x²+7=31

Mathematics
1 answer:
Shtirlitz [24]3 years ago
3 0

Answer: x2= 6

FYI: The x2 is x squared

Step-by-step explanation:

Simplifying

4x2 + 7 = 31

Reorder the terms:

7 + 4x2 = 31

Solving

7 + 4x2 = 31

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-7' to each side of the equation.

7 + -7 + 4x2 = 31 + -7

Combine like terms: 7 + -7 = 0

0 + 4x2 = 31 + -7

4x2 = 31 + -7

Combine like terms: 31 + -7 = 24

4x2 = 24

Divide each side by '4'.

x2 = 6

Simplifying

x2 = 6

You might be interested in
How does a tree have self similarity?
ankoles [38]
Well trees are living things like humans they are very helpful like people they have arms like people and the leaves are kinda like hair
4 0
3 years ago
Please tell me how o do this
larisa86 [58]

Answer:

you might have to use an app that scans that specific problem :)

Step-by-step explanation:

5 0
3 years ago
Find all possible values of x in the similar triangles pqr stu
antoniya [11.8K]
If triangles PQR and STU are similar then PQ corresponds to ST and PR corresponds to SU. Therefore, PQ/ST=PR/SU
Considering that, PQ= 7-x, ST= 13-x, PR= x²+5 and SU= x² +20
therefore, (7-x)/(13-x)= (x²+5)/(x²+20) 
               cross multiplying,
         7x² +140-x³+20x =13x²+65-x³-5x
combining the like terms,
          6x² +15x -75=0
          solving for x,
    x = 5/2 or -5 
5 0
3 years ago
Mrs. Smith bought 3 hats for $22.50. At this rate, how much is Mrs. Smith paying for 1 hat?
jolli1 [7]

Answer:

Hi! The correct answer is $7.5

Step-by-step explanation:

<em><u>~to find the price of 1 seperate thing divide price by the amount that has been bought~</u></em>

7 0
2 years ago
Read 2 more answers
NEED HELP WITH ONE MORE QUESTION
meriva

Answer:

Part A= 315

Part B= Saturday and Sunday

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Please answer immediately
    10·2 answers
  • Pants cost $18.50 and it is 25% off, what is the cost?
    12·2 answers
  • At many golf​ clubs, a teaching professional provides a free​ 10-minute lesson to new customers. A golf magazine reports that go
    14·1 answer
  • Solving systems of an equation - Homework due tomorrow - Picture provided
    14·1 answer
  • Prove that the bisectors of alternate interior angles are equal
    11·1 answer
  • Analyze the diagram below and complete the instructions that follow.
    8·2 answers
  • 3.
    9·1 answer
  • I don’t know what to do for this
    8·1 answer
  • Liz walks 1/2 mile in 20 minutes on Monday and 3 3/4 in 150 minutes on Sunday is this proportional or non -proportional
    14·2 answers
  • Use order of operations to simplify the expression below.<br><br> 42 + 3 ×(9−5)÷2
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!