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
Vesna [10]
3 years ago
5

The square of a number exceeds the number by 72. Find the number

Mathematics
1 answer:
balu736 [363]3 years ago
8 0
X^2 = x + 72 you have a quadratic.
x^2 - x - 72 = 0
(x - 9)*(x + 8) = 0
x = 9 or x = - 8

We have to check this one. One of the answers could be wrong.
9^2 = 9 + 72
81 = 81 This one checks out and is OK.

(-8)^2 = -8 + 72
64 = - 8 + 72 
64 = 64.
Both answers work.
You might be interested in
I need answers the other one is 6 degrees celcuius
Dvinal [7]

Answer: c. -4 degrees Celsius

Step-by-step explanation:

If it rises by 17°C, then add it to the -21°C in the thermometer:

-21 + 17 = -4°C

Hope this helps!

6 0
3 years ago
A sector of a circle of 7cm has an area of 44cm².calculate the angle of the sector,correct to the nearest degree π =22\7​
Hitman42 [59]

Answer:

\theta=102.85^{\circ}

Step-by-step explanation:

Given that,

The radius of circle, r = 7 cm

The area of sector, A = 44cm²

We need to find the angle of the sector. The formula for the area of sector is given by :

A=\dfrac{\theta}{360}\pi r^2

Solve for \theta.

\theta=\dfrac{360A}{\pi r^2}\\\\\theta=\dfrac{360\times 44}{\dfrac{22}{7}\times 7^2}\\\\\theta=102.85^{\circ}

So, the angle of the sector is equal to 102.85^{\circ}.

7 0
3 years ago
Solve for the missing number, founding to three decimal places when necessary<br> b. 0.76 =<br> 1425
boyakko [2]

Answer:

1.425

Step-by-step explanation:

b.0.76

0.76÷1000=0.076

l425÷1000=1.425

5 0
3 years ago
What do both the Senate and the House of Representatives require of people running for election?
ludmilkaskok [199]
To be apart of that state for atleast ten years is one.
5 0
3 years ago
Read 2 more answers
In the simplest terms that is equivalent to 2 1/3
ycow [4]

Answer:

IRREGULAR TERM OF FRACTIONS

Step-by-step explanation:

2 1/3

= 7/3 ANSWER

5 0
2 years ago
Read 2 more answers
Other questions:
  • If a book is $25.95, and the tax is 5.25%, how much is the book plus tax?
    9·1 answer
  • If the circumference of a circle is 21 inches, what is the diameter? Use 3.14 for and round your answer to the nearest hundredth
    10·1 answer
  • Games Played
    12·1 answer
  • Hi please help with this maths question URGENT!!! Thank you.
    15·2 answers
  • For each equation, determine whether it represents a direct variation, an inverse variation, or neither.
    12·1 answer
  • Data on IQ for 33 first graders are given as follows: 82, 96, 99, 102, 103, 103, 106, 107, 108, 108, 108, 108, 109, 110, 110, 11
    7·1 answer
  • I do n't understand please help?
    14·2 answers
  • Using the function below, evaluate f(-2). *<br> 2 points<br> f(x) = 3x? - 5x - 2
    8·1 answer
  • A person crosses a 600m long street in 5 minutes what is his speed in kilometre per hour.
    12·1 answer
  • Question
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!