Length= 2x-1. 2(7)-1=13
Width=X. =7
2x-1+2x-1+X+X=40
6x-2=40
Add 2
6x=42
Divide by 6
X=7
Mark bikes 4/10 of a mile in 1/5 of an hour.
That is 4/10miles in 1/5hours
Average speed = Distance ÷ time
= 4/10 ÷ 1/5 = 4/10 ×5/1 = 2 miles/hour
Answer:
500
Step-by-step explanation:
70/x=14/100
cross multiply
70/500=14/100
x=500
There are 500 dancers in the school
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
→ We know that co-interior angles add up to 180°, so we can set up an equation
x + 17 + 4x + 3 = 180
→ Collect the x terms
5x + 17 + 3 = 180
→ Collect the integers
5x + 20 = 180
→ Minus 20 from both sides to isolate 5x
5x = 160
→ Divide both sides by 5 to isolate x
x = 32
⇒ Now we know the value of x, we can substitute it in back into m∠f because we know angles on a straight line add up to 180°
4x + 3 when x = 32 ⇔ 4 × 32 + 3 ⇔ 128 + 3 ⇔ 131