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
nignag [31]
3 years ago
9

Which of the following are solutions to the quadratic equation? Check all that

Mathematics
2 answers:
LenKa [72]3 years ago
5 0

Answer:

Step-by-step explanation:

2x2+5x−10=x2+4

Step 1: Subtract x^2+4 from both sides.

2x2+5x−10−(x2+4)=x2+4−(x2+4)

x2+5x−14=0

For this equation: a=1, b=5, c=-14

1x2+5x+−14=0

Step 2: Use quadratic formula with a=1, b=5, c=-14.

x=

−b±√b2−4ac

2a

x=

−(5)±√(5)2−4(1)(−14)

2(1)

x=

−5±√81

2

x=2 or x=−7

Answer:

x=2 or x=−7

Andrew [12]3 years ago
5 0

Answer:

x = 2 or x= -7

Step-by-step explanation:

We can use factorisation to solve this.

First, we shift all the variables to one side (see attachement)

Then, we need to find the value of x, which multiples to give -14 and adds together to give 5.

7 - 2 = 5

and 7 x (-2) = -14.

Now we factorize (group into brackets) to find the values of x.

We solve for x to find the final answer.

You might be interested in
The diagram shows a parallelogram ABCD.
oee [108]
Can you provide a picture?
5 0
2 years ago
Ryann planned on swimming 14 miles. Instead, he was only able to swim 1/4 of that distance. How many miles did Ryan swim?
mote1985 [20]

Hey there,

Given the question it shows that Ryann swam 1/4 of 14 miles that he was supposed to swim.

In words of is another way to say 1/4 * 14...

  • 14/4

This expressed as a mixed number would be...

  • 3 and 2/4 or 3 1/2

Of the 14 miles that Ryann was supposed to swim he swam 3 1/2 miles.

Hope I helped,

Amna

8 0
3 years ago
Read 2 more answers
Someone?! answer please
Sonbull [250]
The answer is "$94."

If all 6 friends spent $420 on kayaks, and $144 on food, then they spent $564 in total. Divide $564 by 6 people to see how much each person payed.

420+144=564
564÷6=94
8 0
3 years ago
Read 2 more answers
Choose the system of inequalities that best matches the graph below.
lapo4ka [179]

Answer:

D) y\:, y\:>\:-x

Step-by-step explanation:

The blue boundary line has a y-intercept of 2 and a slope of  2.

It has equation : y=2x+2

Since the boundary line is not solid and the lower half plane of this line is shaded, its inequality is

y\:

The blue boundary line passes through the origin and has slope -1.

Its equation is y=-x.

Since the boundary line is not solid and the right half-plane is shaded, its inequality is y\:>\:-x

The correct choice is D.

4 0
3 years ago
What is the mean of the following set of data? Round your answer to two decimal places.
kolezko [41]
The mean is 73.44<span>

</span>
You could've found this by adding up all the values in the data set, then dividing by how many numbers were in the data set!

66+81+60+72+79+83+60+92+68 = 661

661 ÷ 9 = 73.44
7 0
3 years ago
Other questions:
  • What is a letter with at least one line of symmetry
    13·2 answers
  • Many physical processes are exponential in nature. A typical way of cleaning a tank of contaminated water is to run in clean wat
    14·1 answer
  • Write the equation if the line that passes through the point (3,5)
    11·2 answers
  • Which of the following lists all the positive factors of 8 ?
    11·1 answer
  • The number of vertices a triangle has<br> 3<br> 6<br> 4<br> 5
    12·1 answer
  • Muhammad, a shipping and receiving clerk, uses 1 yard, 2 feet, 4 inches of twine to wrap each carton he packs. He has to pack 29
    15·1 answer
  • Select the correct answer,
    13·2 answers
  • Solve for x.<br> X 4/5/15
    10·1 answer
  • Which of<br> the following describes the polynomial function?
    14·1 answer
  • Mathew basketball team won 68% of the games they played if they won 17 games how many did they play
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!