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
nlexa [21]
2 years ago
11

Write the quadratic equation whose roots are -3 and 3, and whose leading coefficient is 5

Mathematics
1 answer:
anastassius [24]2 years ago
3 0

Answer:

5x²- 1.8

Step-by-step explanation:

roots are -3 and 3, put them in brackets

(x - 3)(x + 3)

x² + 3x - 3x - 9

x² - 9

5x = -9

x = -1.8

5x² - 1.8

just to check:

5x² - 1.8

x² - 9

(x - 3)(x - 3)

x = -3 and 3.

You might be interested in
A pound of weed and feed covers 200 square feet how many pounds are needed to fertilize a lawn measuring 70 feet by 50 feet
nika2105 [10]
You would have to find out how many square feet the lawn is first:
70 x 50 = 3500 square feet
You are told that one pound = 200 square feet so use this to calculate how many pound you’ll need for 3500 square feet.
3500 square feet divided by 200 square feet = 17.5 pounds
Answer: 17.5 pounds
5 0
3 years ago
The principal of East High School wants to buy a new cover for the sand pit used in the long-jump competition. He measured the s
Ganezh [65]

Answer: area is 286.16 ft²

Step-by-step explanation:

Length of the sand pit is 29.2 feet and the width is 9.8 feet.

L= 29.2 ft

W = 9.8 ft

To find out the area, all we have to do is multiply the lenght by the width:

And do not forget that to calculate the area, all units must be the same and for the area, it is always the unit squared, in this case, feet square or simply (ft²).

A = l*w

A = 29.2 * 9.8 = 286.16 ft²

3 0
3 years ago
PLEASEEE HELP!!!!! (brainliest)
lesya692 [45]
The answer should be 2d-20.

Need an explanation?
8 0
3 years ago
3. given that m < APC is 104° in circle P, find the degree measure of Arc ABC​
lilavasa [31]

Answer:

Answer is 256 degrees

Step-by-step explanation:

You basically take the degree that they gave you, which is 104, now take 360 (that's the measurement of the whole circle) and subtract it by 104 to get your answer.

5 0
3 years ago
Can someone please help me with this? I keep getting half of the answer and I'm doing everything right. ------------------------
serg [7]

9514 1404 393

Answer:

  a. x, x+2, x+4

  b. 10 ≤ 3x+6 ≤ 24

  c. 6 ft, 8 ft, or 10 ft

Step-by-step explanation:

<u>Given</u>:

  • The lengths of the sides of a certain triangle, in feet, are consecutive even integers.
  • The perimeter of this triangle is between 10 feet and 24 feet inclusive.

<u>Find</u>:

  a. Using one variable, write three expressions that represent the lengths of the three sides of the triangle.

  b. Write a compound inequality to model this problem.

  c. Solve the inequality. List all possible lengths for the longest side of the triangle.

<u>Solution</u>:

You have let x represent the shortest side. (Note that the question asks for the length of the longest side.)

a. The expressions for side lengths can be x, x+2, x+4 when x is the shortest side.

__

b. Here is the compound inequality

  10 ≤ x+(x+2)+(x+4) ≤ 24

__

c. Here is the solution

  10 ≤ 3x+6 ≤ 24 . . . . collect terms

  4 ≤ 3x ≤ 18 . . . . . . . subtract 6

  4/3 ≤ x ≤ 6 . . . . . . . . divide by 3

<em>Your working is correct, but incomplete</em>. The values of interest are the even integers x+4.

  5 1/3 ≤ x+4 ≤ 10

The longest side may be 6 ft, 8 ft, or 10 ft.

6 0
3 years ago
Other questions:
  • PLAY AMOUNG US WITH ME PLZ FAZWQ
    9·2 answers
  • The slope of a line is –2 and its y-intercept is (0, 3). What is the equation of the line that is parallel to the first line and
    9·1 answer
  • y=0.5x+1.3 approximates the number of hours it takes to arrange a dinner event, you, given the number of people attending x. whi
    11·1 answer
  • 111.25 is what percent of 89?​
    9·2 answers
  • An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 68 type K batteries and a sample of 84
    6·1 answer
  • Select the point that is a solution to the system of line
    5·1 answer
  • Which is farther 200km or 200mi
    12·1 answer
  • A rectangle park has been constructed in downtown lilburn the designer wants to put a gravel walkway that cuts diagonally throug
    11·1 answer
  • ONLY IF YOU'RE CORRECT I WILL GIVE YOU BRAINLIEST!!!!
    7·2 answers
  • How do you use subsitution for5x+2y=4
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!