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
aleksandrvk [35]
3 years ago
14

Find the smallest value of $x$ such that $x^2 + 10x + 25 = 8$.

Mathematics
1 answer:
Mashutka [201]3 years ago
3 0

Answer:

-5 -√8  or ≈ -7.83

Step-by-step explanation:

<u>Solving the quadratic equation, to find its roots:</u>

  • x^2 + 10x + 25 = 8           ⇒ The left side is perfect square
  • (x+5)^2=8                         ⇒ Getting square root of both sides
  • x+5 = ± √8                       ⇒ There are 2 roots
  • x = - 5 ± √8

<u>The smallest root is:</u>

  • x= -5 - √8 ≈ -7.83
You might be interested in
Determine whether the Mean Value Theorem applies to the function f(x)=2x^1/5 on the interval [-32, 32]
Anettt [7]

Answer

given,

f(x) = 2 x^{1/5}

interval = [-32, 32]        

differentiating the given equation

f'(x) = \dfrac{d}{dx}(2 x^{1/5})

f'(x) = \dfrac{2}{5x^{4/5}}

hence, the above solution is not defined at x = 0

and x = 0 lie in the given interval i.e. [-32, 32]

so, at x = 0 the function is not differentiable.

Hence, mean value theorem does not apply to the given function.

5 0
3 years ago
The height of an object thrown upward with an initial velocity of 32 feet per second is given by the formula h = −16t2 + 32t, wh
andre [41]

Answer:

Therefore  after 1 second of lunched the object reach a height of 16 feet.

Step-by-step explanation:

When a particle is thrown vertically upward direction on that time only gravitation force is worked on it. In that case the acceleration of the particle is - g.Since gravitation force works downward direction and the displacement of the particle is upward direction that's why acceleration is negative.

When particle comes down the the acceleration of the particle is g.

Since the displacement and acceleration work on the particle in same direction.

The value of g is 9.8 m/s².

Given that, the height of the particle can measure from the equation

h=-16t^2+32t       Where t is time in second

To find out the time when the object reach a height 16 feet. We have put the value of h in the given equation.

Putting h=16 in the given equation

16= -16 t²+32

⇒16t²-32t+16=0

⇒16(t²-2t+1)=0

⇒t²-2t+1=0²         [ ∵16≠0]

⇒(t-1)²=0

⇒t-1=0

⇒t=1

Therefore  after 1 second of lunched the object reach a height of 16 feet.

6 0
3 years ago
Best buy sells iPhones amd Samsung. Thy have 81 phones in the store. If the number of iphones is twice the number of Samsung's h
seropon [69]

Answer:

54  iphones ,27 samsungs

81/3=27

27x2=54

81-54=27

5 0
3 years ago
A circle with radius of 3 cm sits inside a circle with radius of 5 cm. What is the area of the shaded region? Round your final a
DiKsa [7]

Hello!!

So first you need to find the area of the green circle. The formula for finding area for a circle is A = π r2. So the area for the green circle is 28.26 cm. Then you need to find the area of the blue circle. (Using the same formula) which would be 78.5. Then you subtract the value of the green circle to get the value of the shaded region which then your final answer is 50.24 cm. Hope this helped!!

8 0
3 years ago
Read 2 more answers
What is the length (magnitude) of the vector (7, -2)?
Sedbober [7]

Answer: B

Step-by-step explanation:

I just got it right on A P E X

have a good day

4 0
3 years ago
Read 2 more answers
Other questions:
  • A factory that produces piano keys churned out 545,952 keys in 12 months. A piano requires 88 keys. How many pianos can be produ
    5·1 answer
  • What is the value of -d when d=-2?
    15·2 answers
  • Where is the opposite of 8 located on a number line?
    7·2 answers
  • 1 a.) 20cm^2 to mm^2
    6·1 answer
  • What is an equation of the line that passes through the points (-7, -7) and (-7, 4)
    5·1 answer
  • Please help! pleaseeeeeeeeeeeeeeeee
    5·1 answer
  • A) -198+(-32) ayuda porta<br> B)-99+(-12)
    13·1 answer
  • Leticia can run 2 miles in 11 minutes. How long would it take her to run 8
    9·2 answers
  • A U.S. Senator from Indiana wanted to know what all her constituents thought about the Clean Air Act that was coming up for a vo
    12·1 answer
  • Bruce collected coins. He collected a total of 125 coins. If 72% of the coins he collected were​ foreign, how many other coins d
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!