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
xeze [42]
2 years ago
8

Help help me please help me

Mathematics
1 answer:
PilotLPTM [1.2K]2 years ago
5 0

Answer:

4

Step-by-step explanation:

Plz mark as brainliest

You might be interested in
Prove the quadratic formula
STALIN [3.7K]

ax² + bx + c = 0

x = (-b ± √(b² - 4ac))/2a


First, rewrite the first equation so that the first coefficient is 1. Divide everything by a.

(ax² + bx + c = 0)/a =

x² + (b/a)x + (c/a) = 0

Isolate (c/a) by subtracting (c/a) from both sides

x² + (b/a)x + (c/a) (-(c/a) = 0 (- (c/a)

x² + (b/a)x = 0 - (c/a)

Add spaces

x² + (b/a)x          =  -c/a

Take 1/2 of the middle term's coefficient and square it. Remember that what you add to one side, you add to the other.

x² + (b/a)x + (b/2a)² = -c/a + (b/2a)²

Simplify the left side of the equation.

x² + (b/a)x + (b/2a)² = (x + (b/2a))²

(x + b/2a))² = ((b²/4a²) - (4ac/4a²)) -> ((b² - 4ac)/(4a²))

Take the square root of both sides of the equation

√(x + b/2a))² = √((b²/4a²) - (4ac/4a²))

x + b/(2a) = (±√(b² - 4ac)/2a

Simplify. Isolate the x.

x = -(b/2a) ± (∛b² - 4ac)/2a = (-b ± √(b² - 4ac))/2a

~

3 0
3 years ago
Solve the following system of equations: <br> x − 2y = 5<br> 2x − 4y = 10
emmasim [6.3K]
\left\{\begin{array}{ccc}x-2y=5\\2x-4y=10&|divide\ both\ sides\ by\ (-2)\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-2y=5\\-x+2y=-5\end{array}\right}\\.\ \ \ \ \ \ \ \ \ \ \ 0=0-true\\\\Answer:infinitely\ many\ solutions\    \left\{\begin{array}{ccc}x\in\mathbb{R}\\y=\dfrac{x-5}{2}\end{array}\right
5 0
3 years ago
10,000 candy canes was divided into 50 boxes. How many candy canes were in each box?​
kumpel [21]

Answer:

200

Step-by-step explanation:

5 0
2 years ago
What is the simplified value of the expression below?<br><br> 12.4 x (negative 6.3)
MrRa [10]

Answer:

78.12

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How many packages of pencils should Phillip buy?
AfilCa [17]
C.........................
3 0
3 years ago
Other questions:
  • BRAINLIEST FOR THE CORRECT PROOF:<br><br> prove, a^logx base a=x
    14·1 answer
  • How many pennies is $100
    6·2 answers
  • I need help on #42 b
    15·2 answers
  • 4 ticket cost 48 at this rate what cost of 11
    13·2 answers
  • a square green rug has a blue square in the center. the side length of the blue square is x inches. the width of the green band
    8·2 answers
  • Help please! I don't understand
    12·1 answer
  • What is the answer to this question
    8·1 answer
  • Please answer, yes, or no.
    8·1 answer
  • Please help I have a test tomorrow.
    5·1 answer
  • A teacher is making a history test composed of the same number of multiple-choice questions as short-answer questions. She estim
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!