On a picture the size of rectangular room is 5 cm by 7 cm. Actually the shorter side of the room is 6m. What is the scale of a p
1 answer:
Size of the room as depicted on the picture = 5 cm × 7 cm
Actual length of shorter side = 6 m
⇒ The size being shown at 5 cm is actually 6 m (or 600 cm)
⇒ In the picture, 1 cm represents cm or 120 cm
Hence, the scale of the picture is 1 cm = 120 cm
⇒ Length of the longer side = 120 × 7 cm = 840 cm = 8.4 m
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Answer:
Step-by-step explanation:
Given
x² + x
To complete the square
add ( half the coefficient of the x- term )² to x² + x
x² + 2( )x + (
)² = x² + x +
= (x + )² ← perfect square