Answer:
x = 11 and y = 4
Step-by-step explanation:
Given equations are :
x+y=15 ...(1)
-2x+5y=-2 ...(2)
We need to solve the systems of equations.
Multiply equation (1) by 2.
2x+2y=30 ...(3)
Adding equation (2) and (3).
-2x+5y+2x+2y = -2+30
7y = 28
y = 4
Put the value of y in equation (1).
x+4=15
x = 11
So, the solution of the given equations are x = 11 and y = 4.
That's a trapezoid,


Answer: 32
But say we didn't know the formula. We can chop out the 4 by 4 square and we have two 45/45/90 triangles side 4 left over, so two 4 by 4 squares,
A = 2(4)(4) = 32
We can think of this as 12 by 4 rectangle with two 4 by 4 right triangles chopped out:
A = 12(4) - 2(1/2)(4)(4) = 48 - 16 = 32
s>7
So, all values greater than 7 are included in the number line.
Step-by-step explanation:
We need to use number line to show numbers in the solution set of the inequality 2s+ 36 greater than 50
Solving and finding value of s:
2s+36>50
Adding -36 on both sides
2s+36-36>50-36
2s>14
Divide both sides by 2
s>7
So, all values greater than 7 are included in the number line.
The number line is shown in figure attached below
Keywords: Solving inequalities
Learn more about Solving inequalities at:
#learnwithBrainly
Answer:
I think it is 45 not for exactly sure if I'm right. But I think it is.
Step-by-step explanation:
3x + 5 = 36
3x = 36 - 5 = 31 (subtract 5 on both sides)
3x = 31
x = 31/3 (divide 3 on both sides)
Hence x = 31/3.