Answer:
B is
Step-by-step explanation:
Use function Y=ax, try it on B and you will get a=-1.
others are not linear function.
24) All percents are numbers with the decimal moved 2 to the right. So if you have 275%, move the decimal to the left twice to get a factor of 2.75. that means that the puppy is 2.75 times heavier at 4 months than it was at 2 months. Since you need the answer as a mixed fraction, your answer is;
![2.75=2+\frac{3}{4}=2~\frac{3}{4}](https://tex.z-dn.net/?f=%202.75%3D2%2B%5Cfrac%7B3%7D%7B4%7D%3D2~%5Cfrac%7B3%7D%7B4%7D%20)
28) If 6 of 75 trees are 30+ feet tall and you need to know how many are under, subtract 6 from 75 to get (75 - 6) = 69 trees under 30ft tall.
You're looking for the percent of trees under 30ft tall, so divide the number of trees <30ft by the total number of trees to get;
![\frac{69}{75}= .92](https://tex.z-dn.net/?f=%20%5Cfrac%7B69%7D%7B75%7D%3D%20.92)
Move the decimal 2 to the right to get
92%.
Your answer is that
92% of trees is under 30ft.
Answer:
t = (A/sx) - r
Step-by-step explanation:
Solve for t like this:
![A = s(t+r)x\\A = sx(t+r)\\\\\frac{A}{sx} = t+r\\\frac{A}{sx} - r = t\\t= \frac{A}{sx} - r](https://tex.z-dn.net/?f=A%20%3D%20s%28t%2Br%29x%5C%5CA%20%3D%20sx%28t%2Br%29%5C%5C%5C%5C%5Cfrac%7BA%7D%7Bsx%7D%20%3D%20t%2Br%5C%5C%5Cfrac%7BA%7D%7Bsx%7D%20-%20r%20%3D%20t%5C%5Ct%3D%20%5Cfrac%7BA%7D%7Bsx%7D%20-%20r)
Answer:
Option B
Step-by-step explanation:
Since, number of calories 'C' burned is proportional to the number of minutes (m) given to the exercise,
C ∝ m
C = km
Where k is the proportionality constant.
From the table attached,
For C = 250 calories and m = 30 minutes,
250 = 30k
k = ![\frac{250}{30}](https://tex.z-dn.net/?f=%5Cfrac%7B250%7D%7B30%7D)
= ![\frac{25}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B25%7D%7B3%7D)
Therefore, equation representing this situation will be,
C = ![\frac{25}{3}m](https://tex.z-dn.net/?f=%5Cfrac%7B25%7D%7B3%7Dm)
Option B will be the correct option.
Answer:
y ≈ 2.5
Step-by-step explanation:
Using the Sine rule in Δ XYZ
=
, substitute values
=
( cross- multiply )
y sin50° = 2 sin75° ( divide both sides by sin50° )
y =
≈ 2.5 ( to the nearest tenth )