Perimeter = lenght×2 + width×2
Let x represent the width
80 = 2(2x - 5) + 2x
Find for x
80 = -10 + 4x + 2x
80 + 10 = 6x
90 = 6x
90/6 = x
x = 15
The width is 15 cm
The length is 2×15 - 5 = 25
Answer: Yes, He bicycled fewer in this week than last week.
Step-by-step explanation:
Let he bicycled x hours in the last week,
Then, According to the question,




Hence, He bicycled fewer in this week than last week.
Answer:
There is a possibility that Darius is 138 inches.
Step-by-step explanation:
Imagine william is 67 (Close integer less than 68)
d can be equal to 4 + 2(67)
D is less than or equal to 138 inches.
Answer:
Step-by-step explanation: the best way to get this answer is by using a scientific calculator fx-991es plus I recommend
Let's go manual for now.
Let's covert pi/4 to angle
1⁰ =π/180
1 radian =180/π
Therefore π/4 × 180/π
∅ =45⁰
Sin-¹(tan 45⁰)
Tan 45⁰= 1
Sin-¹ (1) = 90⁰. Press { sin,-¹ (1) } on your calculator
Sin-¹ (tan pi/4) = 90⁰