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
Joaquin bought a bookcase on sale for $120, which was two-thirds of the original price. What was the original price of the bookc
weqwewe [10]
180
Because 120 divided by 2 is 60.
And 120 + 60 is 180
7 0
3 years ago
PLEASE HELP!!! Maria is saving money so she can go to a professional football game. Maria has $25. She saves $5 a week. Graph a
Kruka [31]
Equation would be: Y = 25 + 5x
Where, x = number of weeks
So, when x = 1, Y = 25 + 5(1) = 25+5 = 30
When x = 2, Y = 25 + 5(2) = 25 + 10 = 35
x = 3, Y = 25 + 5(3) = 25 + 15 = 40

So, Mark the coordinates: (0, 25), (1, 30), (2, 35), (3, 40), (4, 45), (5, 50)...
And draw a line...Graph is done!

Hope this helps!
6 0
3 years ago
Which equation represents a line that passes through the two points in the table x 1,5 and y 1,6
aleksandrvk [35]

For this case we must find a linear equation of the form:

y = mx + b

Where,

m: slope of the line

b: cutting point with vertical axis.

For the slope we have the following equation:

m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}}

Substituting values we have:

m = \frac {6-5} {1-1}\\m = \frac {1} {0}

We observe that the slope of the line is not defined.

Therefore, the line is vertical.

Thus, the equation of the line is given by:

x = 1

Answer:

The equation of the line is given by:

x = 1

8 0
3 years ago
Read 2 more answers
Вычислите: 1) 1/2×2/3×3/4-2/3×3/4×4/5-3/4×4/5×5/6​
malfutka [58]

Answer:

= -13 / 20

Step-by-step explanation:

4 0
3 years ago
How to solve this <br>3 = (2x + 8)/3​
seropon [69]

Answer:

x = 1/2

Step-by-step explanation:

First you want to get rid of the fraction, so you can multiply both sides of the equation by 3.

9 = 2x + 8

Then, subtract 8 from both sides to get x by itself.

1 = 2x

Finally, divide both sides by 2 so you only have one x

1/2 = x

This means that the answer is x = 1/2.

5 0
3 years ago
Read 2 more answers
Other questions:
  • 1. Name the vertex of angle 2.
    6·1 answer
  • A box holds 42 pieces of red construction paper and 18 pieces of blue construction paper. A piece of paper is pulled out of the
    9·1 answer
  • How to solve <br>(5-8i)+(1+6i)
    8·2 answers
  • PLEASE HELP ME WITH THESE TWO PROBLEMS. QUICK POINTS
    14·1 answer
  • Which item in nature does NOT follow the Fibonacci Sequence *
    10·1 answer
  • Due soon pls help - who ever answers get brainiest !
    6·2 answers
  • Corresponding Angles are congruent.
    10·1 answer
  • Please give a valid complete answer with steps. <br> Given the information below, what is m ∠CBE?
    11·1 answer
  • PLEASE HELP ME INSTANTLY I WILL GIVE A BRAINLY AND A THANKS
    15·2 answers
  • Use point-slope form − 1 = ( − 1) to find the equation of the line that passes through the point (−3,5) and has slope = −2 . Wri
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!