(x+2)(x+3)=x•x-10 how do you solve for x?

x = -16/5

Step-by-step explanation:

Let's solve your equation step-by-step.

(x+2)(x+3)=xx−10

Step 1: Simplify both sides of the equation.

x^2 + 5x + 6= x^2−10

Step 2: Subtract x^2 from both sides.

x^2 +5x +6 − x^2 = x^2 − 10 −x^2

5x + 6 = −10

Step 3: Subtract 6 from both sides.

5x + 6 − 6 = −10 −6

5x = −16

Step 4: Divide both sides by 5.

5x/5 = -16/5

Therefore

x= -16/5

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional