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3 years ago

I.The difference between two numbers is 5. Their product is 36.

1 answer:

3 0

Equ 1: X-Y=5
equ 2: x∗y=36
from Equ 1
X=5+Y------equ 3
substitute x=5+y in equ 2
(5+y)∗y=36
5y+y^2=36
y^2+5y-36=0
factorize by substitution
(y^2+9y)-(4y-36)=0
y(y+9)-4(y+9)=0
(y-4)(y+9)=0
y=4 or y=-9....

substitute y=4 or -9 in equ 1
x-4=5
x=5+4
x=9 OR

x-(-9)=5
x+9=5
x=5-9
x=-4

since -4∗-9=36
therefore y=-9 and x=-4

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3 years ago

Find the value of x from the equation

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3 years ago

Is this an inequality or equation?

romanna [79]

Answer:

Equation

Step-by-step explanation:

A statement that the values of two mathematical expressions are equal (indicated by the sign =).

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^^ This is the definition for Inequality

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3 0

3 years ago

Read 2 more answers

12x-39<9 and -4x+3<-6

gulaghasi [49]

Remember, you can do anything to an equation as long as you do it to both sides

and when multiply or divide by a negative in inequalities, flip the direction of the sign

12x-39<9
add 39 to both sides
12x<48
divde bothh sides by 12
x<4

-4x+3<-6
minus 3 both sides
-4x<-9
times both sides by -1 and flip sign
4x>9
divide both sides by 4
x>9/4

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3 years ago

Read 2 more answers

The cost of renting a bicycle from Dan's Bike Shop is $2 for 1 hour plus $1 for each additional hour of rental time. Which of th

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option B

Explanation:

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For 1 hour = $2

For each additional hour, it is $1

For 2 hours = First hour + 1(additional hour)

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For 3 hours = $2 + $1 (2) = 2+2 = $4

For 4 hours = $2 + $1(3) = 2+3 = $5

The graph which shows this rental cost as 2, 3, 4, 5 is option B

7 0

1 year ago