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
slamgirl [31]
3 years ago
7

What is the answer to the equation x squared minus 2x equals 15.

Mathematics
1 answer:
anzhelika [568]3 years ago
7 0

Answer:

x = 5 \\ x =  - 3

Step-by-step explanation:

{x}^{2}  - 2x = 15 \\  {x}^{2}  - 2x - 15 = 0 \\  {x}^{2}   + 3x - 5x - 15 = 0 \\ x(x + 3) - 5(x + 3) = 0 \\ (x - 5)(x + 3) = 0 \\ x - 5 = 0 \:  \:  \:  \:  \: or \:  \:  \:  \: x + 3 = 0 \\ x = 5 \:  \:  \:  \: or \:  \:  \:  \:  \:  \: x =  - 3

You might be interested in
Select all that apply.
Nina [5.8K]

Step-by-step explanation:

In parallelogram Both pairs of opposite sides are parallel

3 0
3 years ago
How many hundreds tens and ones have 423
Gnom [1K]
Four hundreds two tens and three ones
7 0
3 years ago
Read 2 more answers
How many gallons of gas are left after driving 200 miles
BaLLatris [955]
The equation y = -0.04x + 12 gives the number of gallons of gas in your car where x is the number of miles drivene

easy

y=gas left
x=miles

sub 200 for x
y=-0.04(200)+12
y=-8+12
y=4

4 gallons left
8 0
3 years ago
This figure represents the base of a fish tank that is 8 inches high.
Igoryamba

The volume of the fish tank is 408 in³

To solve the volume of the fish tank, we need to understand what is the volume of plane shapes.

<h3>What is the volume of plane shapes?</h3>

The volume of plane shapes resembles a 3-dimensional space showing the area enclosed by the shape.

From the figure given:

The figure can be differentiated into two shapes;

  • A rectangle
  • A triangle

The volume of the rectangle is known as:

  • = Length × Breadth
  • = 7 inches × 6 inches
  • = 42 inches²

The volume of the triangle is:

  • = 1/2 × base × height
  • = 1/2 × 3 × 6
  • = 9 inches²

The total volume of the base of the fish tank now is:

  • = 42 inches² + 9 inches²
  • = 51 inches²

Now, the volume of the fish tank is:

  • = Height × base of the fish tank
  • = 8 inches × 51 inches²
  • = 408 in³

Learn more about the volume of plane shapes here:

brainly.com/question/20475473

7 0
2 years ago
Javier is 175% heavier than his brother. If Javier’s brother weighs 80 pounds, how much does Javier weigh?
bija089 [108]

Answer:

140

Step-by-step explanation:

175% of 80 = 140

7 0
3 years ago
Other questions:
  • What is the inverse of the function f(x) = x – 12?
    7·1 answer
  • Which is an example of the associative property?
    7·1 answer
  • Karen deposited $25 in the bank on Monday, $50 on Wednesday and $15 on Friday. On Saturday, she took out $40. Karen's original b
    6·1 answer
  • What would 23 divided by 6 = 3 R5 look as a mixed number?
    7·1 answer
  • Sprint to the finish the professional cyclist travels 380 meters in 20 seconds. At that rate how far does the cyclist travel in
    11·2 answers
  • Which system of linear inequalities is represented by the<br> graph?
    11·2 answers
  • The depth of water near a boat dock is collected by a buoy. The data shows that the water level reached 11 feet during high tide
    6·1 answer
  • if I buy 54 packs of cookies and 15 cookies are in each pack how many cookies do I have all together?!!?!?!
    8·2 answers
  • (I WILL GIVE BRAINLIEST)
    7·2 answers
  • 11. One card is drawn from an ordinary deck of 52 cards. Find the probabilities of drawing the following.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!