3 years ago

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

Pls help with alg II dying

Vsevolod [243]

What are the options they have given?

7 0

2 years ago

What is the volume of the carton? V = Bh Area of a triangle = 1/2 x b x h

Angelina_Jolie [31]

Hi there!

$\large\boxed{\text{ 10.5 in}^3}}$

Begin by solving for the area of the base:

A = 1/2 (bh)

Thus:

A = 1/2(2 · 1.5) = 1.5 in²

Multiply by the depth to find the volume:

A = 1.5 × 7 = 10.5 in³

5 0

3 years ago

Read 2 more answers

Solve for x: 3x/2 - 10 = 2

Roman55 [17]

Answer:

2(2-10)/3=x

Step-by-step explanation:

2(2-10)=3x

2(2-10)/3=x

4 0

3 years ago

Read 2 more answers

I need help it’s hard

Reika [66]

9514 1404 393

Answer:

f^-1(x) = (x +4)/3

Step-by-step explanation:

The inverse function is found by swapping x and y, then solving for y.

y = 3x -4 . . . . . function y = f(x)

x = 3y -4 . . . . . inverse relation

x +4 = 3y . . . . add 4

(x +4)/3 = y . . . divide by 3. This is the inverse function

f^-1(x) = (x +4)/3

6 0

3 years ago

HELPPPP ASAP PLEASE!!!!

wlad13 [49]

Answer:

the answer is C

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers