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
SCORPION-xisa [38]
3 years ago
13

Please help with this!!!

Mathematics
1 answer:
EastWind [94]3 years ago
7 0
A. x = -2 and y = -5

check:
x^2 - 9 = 0

B. x = 0 and y = -6

check:
x^2 - 6 = 0

C. x1 = 3, x2 = 5

check:
(x - 3)(x - 5) = 0

D. x1 = 0, x2 = 4

check:
x(x - 4) = 0
You might be interested in
The 24 students in Mr.Brown's homeroom sold 72 magazines subscriptions. The 28 students in Mr.Garcia's homeroom sold 98 magazine
miskamm [114]
The Homeroom that sold the most subscriptions would be Mr. Garcia's because it says it in the question.
5 0
3 years ago
Read 2 more answers
Can I get some help somebody? reward brainiest
OLEGan [10]

Answer:

Step-by-step explanation:

1). x² - 8x

  To convert this expression into a perfect square trinomial,

  x² - 2(4x) + 4² = (x - 2)²

  Therefore , 4² = 16 should be added.

  Option (4) is the answer.

2). x² + 2x = 3

   x² + 2(1)(x) = 3

   x² + 2(1)(x) + 1 = 3 + 1 [By adding 1 on both the sides]

   (x + 1)² = 4

    x + 1 = ±2

    x = -3, -1

   Option (1) is the answer.

3). 3x²- 18x = 21

    x² - 6x = 7

    x² - 2(3x) = 7

    x² - 2(3x) + 3² = 7 + 3²

    (x - 3)² = 7 + 9

    (x - 3)² = 16

     x - 3 = ±4

     x = -1, 7

6 0
3 years ago
Ana is taking a standardized test. The test has 25 questions consisting of multiple choice and short answer questions. Each mult
tatyana61 [14]
10 Multiple choice questions and 15 short answer questions

8 0
2 years ago
What is the sum of the finite arithmetic series 4+8+12+16...+76
Alexxx [7]
A(n)=4+4(n-1)

a(n)=4+4n-4

a(n)=4n

76=4n

n=19

The sum of any arithmetic sequence (series are infinite) is:

(a+a(n))(n/2)

The average of the first and last terms times the number of terms, in this case we found that n=19 so:

19(4+76)/2=760
8 0
3 years ago
Read 2 more answers
The end of a hose was resting on the ground, pointing up an angle. Sal measured the path of the water coming out of the hose and
Travka [436]

Answer:

3.2 feet


Step-by-step explanation:

The equation  f(x)=-0.3x^{2}+2x  shows the height of water [f(x)] and horizontal distance [x].

<em>Given the </em><em>horizontal distance is 4 feet</em><em>, they want to know the height.</em>


<em>Simply put 4 in x of the equation and solve for f(x). So,</em>

<em>f(x)=-0.3(4)^{2}+2(4)\\f(x)=3.2</em>

So, the height of the water was 3.2 feet above the ground.

4 0
2 years ago
Read 2 more answers
Other questions:
  • joey's little sister must take four steps for every three steps joey takes. suppose one step of joey's covers one foot. how many
    13·1 answer
  • How many 3/4 cups of searving are there in 8 cups of berries
    15·2 answers
  • Simplify 3 square root of 5 end root minus 2 square root of 7 end root plus square root of 45 end root minus square root of 28.
    15·2 answers
  • The measure of angle W is 100°, and the measure of angle Z is 68°
    12·1 answer
  • Substitution method​
    7·2 answers
  • Find the length of the line segment.
    15·1 answer
  • PLZZ BRAINLIEST TO ANYBODY THAT CAN SOLVE THIS. (wrong or not at least try)
    5·1 answer
  • 9x + 7<br> Verbal<br> Expression
    5·2 answers
  • Como se escribe 654,007,000 en letra​
    11·1 answer
  • Evaluate 7|4x−5|+9 when x=−1/8.<br><br> Enter your answer as a decimal in the box.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!