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
lesya [120]
3 years ago
5

Find the number. PLEASE HELP!!!

Mathematics
2 answers:
Arte-miy333 [17]3 years ago
5 0

Answer:

x = 18or x = - 20

Step-by-step explanation:

Given

x² + 2x = 360 ( subtract 360 from both sides )

x² + 2x - 360 = 0 ← quadratic in standard form

Consider the factors of the constant term (- 360) which sum to give the coefficient of the x- term (+ 2)

The factors are + 20 and - 18, since

20 × - 18 = - 360 and 20 - 18 = 2 , thus

(x + 20)(x - 18) = 0

Equate each factor to zero and solve for x

x + 20 = 0 ⇒ x = - 20

x - 18 = 0 ⇒ x = 18

Thus the number could be 18 or - 20

Trava [24]3 years ago
3 0

Answer:

X=18

Step-by-step explanation:

You might be interested in
250 fluid ounces<br> 15 glasses<br> 48 fluid ounces<br> ?
Inga [223]
2.88 glasses (one glass = 0.06 oz)

hope this helps
4 0
4 years ago
A 14-foot ladder is leaning against a building as shown. It touches a point 11 feet up on a building. How far away from the base
Luden [163]
We can assume that the point the ladder creates with the ground and building is a triangle. You can use the Pythagorean theorem to solve this.

A^2 + B^2 = C^2

The ladder is C, and the building can act as A or B, so for the purpose of this explanation, I’ll make it A.

11^2 + B^2 = 14^2
Figure out the squares

121 + B^2 = 196
Subtract 121 from both sides

B^2 = 75
Square root B^2 and 75

B = 5 root3
6 0
3 years ago
A walkway surrounds a rectangular garden. The width of the garden is 3 meters, and the length
rusak2 [61]

Answer:

You are given the width of the garden which is w= 8 feet

length of the garden which l= 6 feet

the width of the walkway is x

so for every side of the garden there is an x

so length overall would be 8+2x (length of garden + x one side + x other side)

and width overall would be 6 + 2x (width of garden + x of one side + x of other side)

area of rectangle is length*width

so the expression would be (8+2x)*(6+2x)

:))) smile....

I hope it is correct.

Step-by-step explanation:

5 0
3 years ago
What is the total area of the figure? <br> 4ft, 5ft, 8ft, 9ft, 9ft
aev [14]
Need more of the question.
3 0
4 years ago
Read 2 more answers
Which is an example of a function?
Andreyy89

Step-by-step explanation:

the price of a piece of cloth and the length of the cloth

5 0
4 years ago
Other questions:
  • Classify a triangle based on side lengths 25, 15, 9
    6·2 answers
  • Please help me with this one
    14·1 answer
  • at the theater one section of seats has 8 rows with 12 seats in each row .in the center of each of the first 3 row are 4 broken
    14·1 answer
  • Convert 1/3 hours to minutes<br> HELP PLEASEEEE
    15·2 answers
  • Is -12x=6y a direct variation?
    11·1 answer
  • How to represent the number 50,679
    15·1 answer
  • D(5,7) E (4,3) and f(8,2) from the vertices of a triangle what is m DEF
    6·2 answers
  • I managed to prove JMK and KNJ to be congruent. How do I find that JLK is isoceles though. Please help.
    15·1 answer
  • Solve equation by using the quadratic formula 25x^2 + 35x = -12​
    12·1 answer
  • Which of the following are solutions to the equation below? Check all that apply. (3x - 5)2 = 19 O A. x= 19+ olm B. x= 119 +5 I
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!