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
jenyasd209 [6]
3 years ago
6

Solve for x using the Quadratic Formula: x2 + 2x + 1 = 0 x equals negative b plus or minus the square root of b squared minus 4

times a times c, all over 2 times a
A.x = 2

B.x = 1

C.x = 0

D.x = −1
Mathematics
1 answer:
Jet001 [13]3 years ago
4 0

The answer is D. x= -1

You might be interested in
Rewrite this as a decimal PLEASE!: <br><br> 13/10=???
stepladder [879]
1.3 hope that helps
8 0
2 years ago
Is of I ready please help me ?
blsea [12.9K]

Answer:  N has to be a negative. hope this helps

Step-by-step explanation:

3 0
3 years ago
Sean tossed a coin off a bridge into the stream below. The path of the coin can be represented by the equation 2 h tt = − 16t^2+
tekilochka [14]

Answer:

It will take 5.61 seconds for the coin to reach the stream.

Step-by-step explanation:

The height of the coin, after t seconds, is given by the following equation:

h(t) = -16t^{2} + 72t + 100

How long will it take the coin to reach the stream?

The stream is the ground level.

So the coin reaches the stream when h(t) = 0.

h(t) = -16t^{2} + 72t + 100

-16t^{2} + 72t + 100 = 0

Multiplying by (-1)

16t^{2} - 72t - 100 = 0

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

In this question:

16t^{2} - 72t - 100 = 0

So

a = 16, b = -72, c = -100

\bigtriangleup = (-72)^{2} - 4*16*(-100) = 11584

t_{1} = \frac{-(-72) + \sqrt{11584}}{2*16} = 5.61

t_{2} = \frac{-(-72) - \sqrt{11584}}{2*16} = -1.11

Time is a positive measure, so we take the positive value.

It will take 5.61 seconds for the coin to reach the stream.

3 0
3 years ago
What is the two equivalent forms for 0.24
oksano4ka [1.4K]
24/100 or 12/50 are both equal to .24

5 0
3 years ago
Read 2 more answers
A rectangular prism has a volume of 97.5 cubic inches. The length is 5 inches and the height is 3 inches. What is the width of t
const2013 [10]

Answer:

6.5

Step-by-step explanation:

3X5=15

97.5/ 15 = 6.5

3 0
2 years ago
Other questions:
  • What is 25 percent of 80
    14·2 answers
  • Write the given expression as an algebraic expression in x. tan(2 cos^-1(x))
    11·1 answer
  • The sum of y and 20 is more than 50
    9·2 answers
  • A population of geese grow in such a way that each generation is simply 2.2 times the previous generation. There were 3 geese in
    11·2 answers
  • What is the value of 4(3x+2) to the power of 2 when x= -15
    14·2 answers
  • A regular triangular pyramid has a base area of 31.5 mm2
    5·1 answer
  • Does anyone know this
    14·1 answer
  • Round to the nearest hundredth (2 decimal places) when necessary
    5·2 answers
  • 1) Fidel had 12 boxes of paper plates. Each box contains 36 paper plates. He used 173 paper plates for the birthday party of his
    14·1 answer
  • Car m left town q and car n left town p at the same time. at noon car m traveled 2/3 of the distannce from q to p and car n had
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!