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
pentagon [3]
3 years ago
10

When 5 is subtracted from the square of a number, the result is 4 times the number. Find the negative solution.

Mathematics
1 answer:
wariber [46]3 years ago
8 0

Answer:

-1

Step-by-step explanation:

You can write it as...

x^{2} -5=4x

Carry the 4x

x^{2} -4x-5=0

Then use the quadratic formula to solve, since you want to find the negative solution, you don't need to find the positive solution, so we will have

(4-\sqrt{16+20}) /2=\frac{4-6}{2}=\frac{-2}{2} =-1

Therefore our answer is -1

You might be interested in
Express in exponential form 200×75​
GREYUIT [131]

Do you mean exponential form as in scientific notation or as in prime factorization.

Now matter I will do both.

As in scientific notation.

200*75

=150*100

=1.5*10000

=1.5*10^4

As in prime factorization.

200*75

=2^3*5^2*3*5^2

=2^3 * 3 * 5^4

Do the one your teacher ask for :) Hope it helps!

6 0
3 years ago
Please evaluate this
siniylev [52]

Answer:

y = 2 \: and \: x = 2.5

y=2x-3

2=2

y = 2x - 3 \\ y =  |2 \times 2.5|  - 3 \\ y = 5 - 3 \\ y = 2 \\

And

8 0
3 years ago
The length of a rectangular deck is 4 times its width if the decks perimeter is 30 ft, what is the decks area
omeli [17]

Answer:

The area of the rectangular deck is 36 sq feet.

Step-by-step explanation:

Let the width of the deck  =  k ft

So, the length of the deck = (4k) ft

Now, perimeter = 30 ft

PERIMETER OF A RECTANGLE =  2(LENGTH + WIDTH)

⇒2( k + 4k)  = 30

or, 2 x 5k = 30   ⇒  10k = 30

⇒ k = 30/10 = 3

So, the width of the deck = k  = 3 ft

Length of the deck = 4k = 3 x 4  = 12 ft

Now, AREA OF A RECTANGLE =  LENGTH X WIDTH

So, the area of the rectangular deck = 3 ft x 12 ft

                                                             = 36 sq feet

Hence, the area of the rectangular deck is 36 sq feet.

8 0
3 years ago
Which graph best represents an exponential function?
stellarik [79]

Hey there! :)

Answer:

Choice B.

Step-by-step explanation:

We can eliminate each graph:

a). This is what is known as a step function. This is incorrect.

b). This is an exponential function because the graph is shaped like a geometric equation. This means that the rate of change is exponential. This is the correct choice.

c). This is an absolute value function. This is incorrect.

d). This is a graph of a polynomial. This does not represent an exponential function, which makes it incorrect.

3 0
3 years ago
43 divided by 569= ?
krok68 [10]
43 divided by 569 is 24,467
4 0
3 years ago
Read 2 more answers
Other questions:
  • Help me please and thank you !
    6·1 answer
  • If the 9th term of an ap is 1/7 and the 7th term os 1/9 find the 63rd term
    13·1 answer
  • What is the area of this trapezoid?<br><br><br> Plz help
    12·2 answers
  • -3<br> 4<br> × <br> -1<br> 2<br> hgfhtdfhhffff
    10·1 answer
  • The sum of two numbers is 10. The difference between the two numbers is 4.
    5·1 answer
  • Ben is paid £8.50 per hour.
    6·1 answer
  • Work out the time taken, in minutes, for a 68km journey at an average speed of 85km/h​
    7·1 answer
  • WIll give brainley<br><br>1/3x = 6
    11·1 answer
  • 4(x + 2) - 1/2x = 22 solve the equation
    15·1 answer
  • Compare using &gt;, &lt;, or =.<br><br> 64 ounces_4 pounds
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!