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
PIT_PIT [208]
2 years ago
5

Use the quadratic formula to solve the equation.–x2 + 5x = 3

Mathematics
1 answer:
Karo-lina-s [1.5K]2 years ago
4 0

Given the equation - x² + 5x = 3, which can be rewritten as:

- x² + 5x - 3 = 0

where a = -1, b = 5 and c = -3.

Quadratic formula:

\frac{-b\text{ }\pm\text{ }\sqrt[]{b^2\text{ - 4ac}}}{2a}

Now, we just replace the values of a, b and c on the equation above.

\frac{-5\text{ }\pm\text{ }\sqrt[]{5^2\text{ - 4(-1)(3)}}}{2(-1)}

=

\frac{5}{2}\text{ }\pm\text{ }\frac{\sqrt[]{13}}{2}

You might be interested in
Please Help ASAP!!!<br> Question in image below.
Luda [366]

Answer:

You know that XZ is 15 and the whole perimeter of the triangle is 50. WZ is going to be the same length as WX due to the lines saying that they are equal.

Your first step is to take 50-15=35, we did this because we already know the length of one side and can take that off from the whole.

The next step is to divide 35 by 2, because both sides are going to be the same length.

35/2=17.5

You final answer would be 17.5

Hope this helps ;)

4 0
3 years ago
Read 2 more answers
How many inches in 60 square feet
jekas [21]
60 square feet = 8640 square inches. Do you need to know how I got that?

5 0
3 years ago
Find the value of the points (5,1) , (-2,-3) and (8,2m) are collinear
svp [43]

Answer:

m = 19/14  so the third point is (8, 19/7).

Step-by-step explanation:

If they are co-linear then the the  slope will be equal.

The slopes of the lines are:

(difference in y coordinates) / (difference in corresponding x coordinates)

Slope between the first 2 points = (-3-1) / (-2-5) -4 / -7

= 4/7.

So if the 3 points are co-linear:

4/7 = (2m - -3) / (8 - -2)

4/7 = (2m + 3 / 10

7(2m + 3) = 40

14m + 21 = 40

14m = 19.

m = 19/14.

3 0
3 years ago
In a survey, 15 high school students said they could drive and 15 said they could not. Out of 60 college students surveyed, 30 s
Citrus2011 [14]

Answer:

No.

Step-by-step explanation:

#1, the sample size is not indicative of a proper high school population, unless of all there is a small amount of students in the high school (or even only 30 students in it). On a individual basis, it can vary widely, and so data analysis such as this is not correct. The data size is skewed as well for the college, especially as college campuses typically house more students then usual. To only ask 60 college students also skew the data gotten. Another sample error may be locational error, in which the location of the schools may warrant the need for a driver license, or if it is not needed, as well as the distance of the student's house and/or where needed facilities are to accommodate a student's needs and desires.

If we were to set all these problems aside and focus more on the question, 15 high school students said they could drive, and 15 said they could not, which makes the sample size of 30 high school students in all. 15 say they can drive, therefore:

15/30 = 1/2, or there is a 50% chance of obtaining a student that can drive.

On the other hand, out of 60 college students surveyed, 30 said they can drive, therefore:

30/60 = 1/2, or there is a 50% chance of obtaining a student that can drive.

∴ Micah's prediction is incorrect in obtaining a college student that can drive more easily then obtaining one that can drive in a high school.

However, remember that too small of a data size can lead to a heavy skew, and it will not represent reality as well.

~

8 0
3 years ago
The ball is shaped like a hemisphere with a radius of 5 inches. Find the volume of the bowl
PilotLPTM [1.2K]

Answer:

The volume of the bowl is V=\frac{250}{3}\pi\ in^{3} or V=83\frac{1}{3}\pi\ in^{3}

Step-by-step explanation:

we know that

The volume of a hemisphere (bowl) is equal to

V=\frac{4}{6}\pi r^{3}

we have

r=5\ in

substitute

V=\frac{4}{6}\pi (5)^{3}

V=\frac{250}{3}\pi\ in^{3}

V=83\frac{1}{3}\pi\ in^{3}

4 0
3 years ago
Other questions:
  • Help please 25 pts. I will mark. One month Justin rented 2 movies and 5 video games for a total of $32. The next month he rented
    8·1 answer
  • If sine of x equals 1 over 2, what is cos(x) and tan(x)?
    12·1 answer
  • Use the formula to find the value of the indicated variable for the values given.
    11·1 answer
  • What would be the missing values for this
    15·1 answer
  • PLEASE HELP!! Proving the Parallelogram Side Theorem in Geometry B on edg.
    12·1 answer
  • Find the difference.
    13·1 answer
  • I don’t know if this is right or not
    5·1 answer
  • Answer Please! Will give Brainlist! 'Easy'
    15·1 answer
  • Need help on this, I have no idea what should go on the first line or the second line​
    11·1 answer
  • Finn has 7 bags of marbles. Each bag has 3 marbles.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!