Answer:
12 cm
Step-by-step explanation:
AB and DC are parallel to each other, so they are the same length. Set their lengths equal to each other and solve for x
4x = 7x - 9
4x - 7x = 7x - 7x -9
-3x = -9
-3x/-3 = -9/-3
x = 3
Now solve for AB.
AB = 4x
AB = 4(3)
AB = 12
Answer:
1-8
Step-by-step explanation:
I was only able to finish one through eight The rest follow the same concept though
Answer:
C; Substitution property
Step-by-step explanation:
Here, we want to find the justification that justifies the written equation;
If PQ + RS = PS
and RS = XY
then PQ + XY = PS
What we simply did is to substitute RS for XY in the second equation;
The correct answer is Substitution property
It can be fully referred to as the substitution property of equality.
What it simply means in a nut shell is that since XY and RS are equal, then in any addition or arithmetic equation, we can make a substitution of XY for RS since they are equal to each other
Answer:
BC 4 in
Step-by-step explanation:
The steps for construction;
- Using a ruler draw line AB 4 inches and label the end points A and B
- At point A , using a protractor, measure angle 60° and mark with point. Draw a line from A passing through this point extending to a length of 4 inches
- Mark that point C.
- Using the ruler, join point C and B and measure BC.
From calculation, length BC can be found by the formula;
------where a=b=4 in , cos A = cos 60°
BC = 4 in
Answer:
-5x -5x
-3y=-5x +12
/-5x /-5x
-5-3y=x+12
/-3 /-3
-5+y=x-4
+5 +5
y=x+1<---(y intercept(and it is its slop))
5x-3y = 12
/-3y /-3y
5x=-3y+12
/5 /5
x=-3y+2.4
/-3 /-3
-3+x=y+2.4
+3 +3
x=y+5.4<---(x intercept(not the slop because the y is not the first number))
