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
Andrej [43]
3 years ago
14

2(x + 4)2 = 20 solve by square roots

Mathematics
1 answer:
DanielleElmas [232]3 years ago
5 0

Answer:

x =  − 4  ±  √ 10,

Step-by-step explanation:

2(x + 4)² = 20

=> 2(x + 4)  (x + 4) = 20

=> 2x + 8 (x + 4) = 20

=> 2x² + 8x + 8x + 32 = 20

=> 2x² + 16x + 32 = 20

=> 2x² + 16x + 12 = 0

=> Now solve using the quadratic formula:

x =  − 4  ±  √ 10,

Radical form: − 4  ±  √ 10,

Decimal form: -0.84, -7.16

Hope this helps!

You might be interested in
M
Ierofanga [76]

Answer:

see below

Step-by-step explanation:

m/3 + 4 = 7

Subtract 4 from each side

m/3+4-4 = 7-4

m/3 = 3

Multiply each side by 3

m/3*3 = 3*3

m =9

4 0
3 years ago
The ratio of the two numbers is 3:4 and their sum is 420. Find the two numbers
sammy [17]

Answer:

0.008

Step-by-step explanation:

because you have to divide it

3 0
3 years ago
Explain how the sign of a in the equation y=a(x-h)^2 + k tells you whether the parabola has a minimum or maximum value.
Svet_ta [14]
In short, for a vertical parabola, namely one whose independent variable is on the x-axis, usually is x², if the leading term coefficient is negative, the parabola opens downward, and its peak or vertex is at a maximum, check the picture below at the left-hand-side.

and when the leading term coefficient is positive, the parabola opens upwards, with a minimum, check the picture below at the right-hand-side.

8 0
3 years ago
In the game of Pick-A-Ball, there are 10 colored balls: 2 red, 4 white, and 4 blue. The balls have been placed into a small buck
MaRussiya [10]

Answer:

The probability of selecting the color of ball that you just selected(a red ball) is P(r) =  \frac{2}{10}

Step-by-step explanation:

From the question we are told that

  The total number of colored balls  is  n  =  10

   The number of red balls is r =  2 red

    The number of white ball is  w =  4

    The number of blue balls is  b  =  4

   The number of balls to be selected is  N  =  2 balls

    The cost of playing picking a ball is  c  =  $10

    The winnings is k =  \$ P(A)

Here P(A) is the probability of obtaining the exact sequence of result  and from the question it  is  P(A) =  0.10

Generally my price according to the question is  

     k =  \frac{0.10 }{10}

=>   k =  0.01

Let assume we selected a red ball

 Generally the probability of selecting a red ball is  mathematically represented as

       P(r) =  \frac{2}{10}

8 0
3 years ago
Sophia babysat for 3 7/12 hours on Friday. she babysat for 2 5/6 hours on Saturday.
pashok25 [27]
3 hours and 35 minutes.
2 hours and 50 minutes.
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is next letter BE GJ LO QT
    15·1 answer
  • Steve subscribed to 10 podcasts for a total of 340 minutes. He used his two favorite tags, Hobbies & Recreation and Soliloqu
    14·1 answer
  • Does the equation x2 - 4x + y2 = -3 intersect the y-axis?
    5·1 answer
  • morgan jogged 51.2 kilometers karen jogged 53.52 kilometers kelly jogged 6kilometers less than morgan how many kilometers did ka
    8·1 answer
  • John goes running every morning. He can run 3 miles in 1 hour. How many miles would he be able to run in 1 and ½ hours? A. 4.5 m
    13·2 answers
  • How do I answer this question?
    15·1 answer
  • Una función racional corresponde a una función algebraica o trascendente
    12·1 answer
  • What four points are contained in the equation y=4x-1
    11·1 answer
  • What is the equation that passes through the given point and has the given slope (-2, -1); m= -3
    14·2 answers
  • 1.14 what is the answer to this one
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!