The percent of the mark down would be 10%. If you subtract 81 from 90, you get 9. Then divide 90 by 9 and you get 10. Hope this helps!
Answer:
11 m - 20 m
Step-by-step explanation:
3 hours and 30 minutes can be rewritten as 3.5 hours
If the bird is flying constantly for 3.5 hours at 40 miles per hour:
3.5 x 40 = 140 miles
If the current value of the baseball car is 50 times its original value, its original value will be its current value divided by 50.
Let
represent the current value of the baseball card. We know form our problem that $62 is 50 times the original value,
, of the baseball card, so translating this statement to an equation we get:
We can conclude that the original value of the baseball card was
$1.24.
Answer:
√55
Step-by-step explanation:
Notice that the small triangle in the bottom corner shares an angle with the overall triangle. Also, they are both right triangles. Therefore, they are similar triangles.
Notice that the large triangle at the top shares an angle with the overall triangle and is also a right triangle. Therefore it is also similar to the overall triangle and the smaller triangle.
Writing a proportion between the small and large triangles:
y / 11 = 5 / y
y² = 55
y = √55
