Answer:
x= -1/2 and y=-5/2
Step-by-step explanation:
Step 1: Solve x−y=2 for x:
x−y=2
x−y+y=2+y(Add y to both sides)
x=y+2
Step 2: Substitute y+2 for x in x+y=−3:
x+y=−3
y+2+y=−3
2y+2=−3(Simplify both sides of the equation)
2y+2+−2=−3+−2(Add -2 to both sides)
2y=−5
Divide both sides by 2.
y=-5/2
Step 3: Substitute -5/2 for y in x=y+2:
x=y+2
x=-5/2+2
x= -1/2 (Simplify both sides of the equation)
Answer: x= -1/2 and y=-5/2
Answer:
Step-by-step explanation:
The absolute value of a number is how far away it is from 0 on the number line. Even though 
is a negative number, the absolute value wouldn't be , because distance can't be negative. Hence the absolute value of is .
30 students.....14 are boys...that means (30 - 14) = 16 are girls
if 2 boys are dropped......14 - 2 = 12 boys
and 2 girls are added......16 + 2 = 18 girls
fraction of the class that are boys is : 12/30 which reduces to 2/5 <==
Answer:
The one on the bottom CANNOT be represented by the equation.
Step-by-step explanation:
For the equation in the problem there has to be a 4x, meaning the cost per case multiplied times the about of them (x). Then there has to be a +7 somewhere in the equation for shipping. The two on the top fit both of those descriptions.
Mark Brainliest plz!
Answer:
3/4
Step-by-step explanation:
Let the unknown number be x.
Subtract 1/2 from the unknown number: x - 1/2
Multiply the result by 1/2: 1/2(x - 1/2)
You get 1/8: 1/2(x - 1/2) = 1/8
Now we solve the equation for x.
1/2(x - 1/2) = 1/8
Multiply both sides by 2.
2 * 1/2(x - 1/2) = 2 * 1/8
x - 1/2 = 1/4
Multiply both sides by 4
4x - 4 * 1/2 = 4 * 1/4
4x - 2 = 1
Add 2 to both sides.
4x = 3
Divide both sides by 4.
x = 3/4
Answer: The number is 3/4.
