Jenny had $168.
She spends $18 per week (w).
The amount being spent each week is 18w.
She is spending that money, so the number will be going down.
168 - 18w
Step-by-step explanation:
Let w be the speed of wind and v be speed of airplane without wind.
(A)
(B)
(C)
Adding equations A and B, we get :
(v - w) + (v + w) = 350 + 525
2v = 875
<u>V = 437.5 mph</u>
Answer:
36:81
Step-by-step explanation:
4 to 36 is times 9, so you have to multiply 9 by 9 to complete the ratio which is how you get 81.
Answer:
80 percent of 70 is 56, so you were 20% wrong?
The percent error is 20%
let me know if you need anything else :)
If the proportion of iris to roses in Nikki's garden is 2: 5, it means that for 25 roses: (2/5) = (10/25). Therefore to maintain the proportion by adding 20 roses: (2/5) = (18/45). The number of irises after the addition of roses will be 10 + 18 = 28 irises.