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
Illusion [34]
4 years ago
14

5x^2+20=30 please show all work

Mathematics
1 answer:
mezya [45]4 years ago
8 0
5x^2+20=30\\
5x^2=10\\
x^2=2\\
x=-\sqrt2 \vee x=\sqrt2
You might be interested in
What is 1 fourteenth as a decimal
nataly862011 [7]
1 14'th as a decimal would be 1/14 or 0.0714 (rounded to the nearest ten thousandth)
4 0
4 years ago
Read 2 more answers
Choose the value for x that makes the proportion true.A.3B.4C.5D.6​
kondor19780726 [428]

Answer:

B) 4

Step-by-step explanation:

It would be 4 because when you cross multiply 16*x and 1*64, you get 4/1.

7 0
3 years ago
Which number line represents the solutions to |x – 5| = 1? A number line from negative 7 to 7 in increments of 1. Two points, on
pochemuha

Answer:

Two points, one at 4 and one at 6.

Step-by-step explanation:

<u>Equations with absolute value </u>

The absolute value of a number x denoted as |x| is a number with the same magnitude with a positive sign. When we know the result of an absolute value, we cannot know if the original number is positive or negative.  

If |x| = a, a>=0, then x=a or x=-a

The equation to solve is |x – 5| = 1. If we apply the above criteria, then

x-5=1 or x-5=-1

Which gives us two possible solutions for x

x=6

x=4

The correct answer is  

Two points, one at 4 and one at 6.

8 0
3 years ago
Read 2 more answers
Plz help <br>with this homework <br>its fir homeschool <br>​
Burka [1]

Where is the assignment

4 0
3 years ago
Lock #5Dr. E. Quation says the Infant Mortality Rate of Korea shown by the expression; 7(m + 3) - 2. Is equal to his criminal su
Alexeev081 [22]

Answer:

The infant mortality rate in Korea based on equality provided is:

  • <u>1.8</u>

Step-by-step explanation:

Since the text mentions that the infant mortality rate in Korea is equal to the criminal success rate, the two expressions must equalize and clear the variable m, which is the rate in each of the expressions:

  • 7 (m + 3) - 2 = 8m + 17.2
  • 7m + 21 - 2 = 8m + 17.2
  • 7m + 19 = 8m + 17.2
  • 19 - 17.2 = 8m - 7m
  • <u>1.8 = m</u>

As you can see, once the equality of the expressions is solved, <u>a rate of 1.8 is obtained</u>.

5 0
3 years ago
Other questions:
  • For the spinner above, the probability of landing on black is 1/2 and the probability of landing on red is 1/3. Suppose is is sp
    13·2 answers
  • Using the order of operations, what should be done first to evaluate mc019-1.jpg?
    13·2 answers
  • which of the following pairs of lines are perpendicular? select all that apply A y=2/3x+4 and y=2/3x-8 B y=2/3x-8 and y=-3/2x-8
    11·2 answers
  • What is the square root of 147?
    7·1 answer
  • Find the measures of the labeled angles.<br> (x+81)° 4x°<br> (* +81) =<br> (Type a whole number.)
    6·2 answers
  • Five more than twice a number is 17.
    14·2 answers
  • A gigantic balloon used for a parade is shaped like an ice cream cone. The radius of the cone and the hemisphere is 12 feet. The
    14·1 answer
  • Which set of side lengths form a right triangle?
    5·1 answer
  • PLEASE HELP WILL MARK AS BRAINLEST
    12·2 answers
  • Someone PLEASE help me with this and PLEASE show me and explain how you got the answer:
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!