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
Galina-37 [17]
3 years ago
15

if 7 is added to the square of and integer, the result is 2 less than 10 times that integer. find the integer

Mathematics
1 answer:
Llana [10]3 years ago
6 0

Answer:

The integer is 1 or 9.

Step-by-step explanation:

Let the integer be x, then:

x^2 + 7 = 10x - 2

x^2 - 10x + 9 = 0

(x - 9)(x - 1) = 0

x = 1, 9.

Verifying

9^2 + 7 = 88

10*9 - 2 = 88   So 9 is correct.

1^2 + 7 = 8

10*1 - 2 = 8 So 1 is also correct.

You might be interested in
Please help me thank u
Vanyuwa [196]
Y= negative 4
35th term negative 45 :)
6 0
3 years ago
suppose you have 76 feet of fencing to enclose a rectangular dog pen. The function A=38x-x^2, where x= width, gives you the area
yan [13]
If A=38x-x^2 then

dA/dx=38-2x

d2A/dx2=-2

Since the acceleration, d2A/dx2 is a constant negative, when velocity, dA/dx=0, it will be an absolute maximum for A(x)

dA/dx=0 only when 38=2x, x=19

A(19)=38(19)-19^2

A(19)=722-361

A(19)=361 ft^2

So the maximum possible area is 361 ft^2

(This will always be true as the maximum possible area enclosed by a given amount of material will always be a perfect square...)
3 0
3 years ago
The radius of a circle is 18 inches. What is the circle's area?
oksano4ka [1.4K]

Answer:

1017.88 inches

Step-by-step explanation:

Area = πr2 = π x 182 ≈ 1017.87602

3 0
3 years ago
Which angles are corresponding angles? Check all that apply.
artcher [175]
Corresponding angles are 3 and 7,  4 and 8, and 2 and 6.
3 0
4 years ago
What is the equation of the line that passes through the point (4. -2) and has a<br> slope of 5/4?
KIM [24]

Answer:

y = 5/4 x - 7

Step-by-step explanation:

y - y1 = m(x - x1)

y + 2 = 5/4 (x - 4)

y + 2 = 5/4 x - 5

y = 5/4 x - 7

7 0
1 year ago
Other questions:
  • I need help I don't know if i starred it correctly
    9·2 answers
  • What’s he value of c to the nearest degree ????
    14·2 answers
  • Use Euler's method to obtain a four-decimal approximation of the indicated value. Carry out the recursion of (3) in Section 2.6
    15·1 answer
  • a student solved the equation 3(2x-6)=4x+8 and found the solution to be x=2.6. How could you use estimation and mental math to s
    7·1 answer
  • HELP.
    14·2 answers
  • 10. Event tickets cost $20 each. A student ordered some tickets online. There was a service charge of $2.50 per ticket. The tota
    5·2 answers
  • Triangle angle theorems <br> The value of x is?
    15·2 answers
  • PLS HELP ME ON THIS QUESTION I WIL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER!!
    7·1 answer
  • I need helpppppppppppppp
    15·2 answers
  • What is the remainder when <br> 1234<br> ×<br> 5678<br> is divided by 5?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!