Answer:
Step-by-step explanation:
Let the first number = x
Let the second number = x + 9
Let the third number = 4x
Together they make 123
x + x + 9 + 4x = 123 combine the left
6x + 9 = 123 Subtract 9 from both sides
6x = 123 - 9
6x = 114 Divide by 6
x = 114/6
x = 19
=================
First number = 19
Second number = 19 + 9 = 28
Third number = 4*19 = 76
Answer:
a
Step-by-step explanation:
Answer:
m∡2 = 90°
Step-by-step explanation:
diagonals of a rhombus are perpendicular
Answer:
40+32=342
Step-by-step explanation:
Using the commutative of addition change the position of 302 and 40 the expression is 40+302=342 [analysis]
X is horizontal and it always goes first and y is vertical and it always goes
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