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katen-ka-za [31]
3 years ago
7

How can you use rates to determine wheather a situation is a proportional relationship

Mathematics
1 answer:
svp [43]3 years ago
7 0

<em>If the rate is a constant, the relationship is proportional.</em> (The rate is the constant of porportionality.)

_____

For two or more points on the function curve, divide the dependent variable value by the independent one. If you get the same result in every case, the relationship is porportional.

___

<em>Note</em>

For some non-proportional relationships, it is possible to find points on the graph that will pass the above test. If you suspect the relationship is actually not one of proportionality, try more points. Check also to make sure that (0, 0) is on the curve.

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A tree was 9 feet tall when it was planted . After 5 years, it was 18 feet tall. What was the tree’s growth rate?
valina [46]

Answer:

1.8 feet per year

Step-by-step explanation:

started at 9 so it grew 9 get in five years which is about 1.8 feet over year

5 0
3 years ago
Find the degree of this polynomial<br><br> 9u2 + 8u
d1i1m1o1n [39]

Answer:

2

Step-by-step explanation:

9u^2 + 8u

The degree is the highest power  since it has a single variable

The highest power is 2

Degree 2

8 0
3 years ago
Differentiate. F(x) = (x3 - 3)2/3 2x f'(x) - 3 8 O f'(x) = 3 8 2x2 f'(x) 3 VX3 -8 f(x) 3 V3-8​
oee [108]

Answer:

f'(x) =   \frac{2{x}^{2}}{ \sqrt[3]{( {x}^{3}  - 8) } }

Step-by-step explanation:

f(x) = ( {x}^{3}  - 8)^{ \frac{2}{3} }  \\  \\ f'(x) =  \frac{2}{3} ( {x}^{3}  - 8)^{ \frac{2}{3} - 1 } (3 {x}^{2}  - 0) \\  \\ f'(x) =  \frac{2}{3} ( {x}^{3}  - 8)^{ \frac{2 - 3}{3}  }  \times 3 {x}^{2} \\  \\ f'(x) =  2{x}^{2}( {x}^{3}  - 8)^{ \frac{ - 1}{3}  } \\  \\ f'(x) =   \frac{2{x}^{2}}{( {x}^{3}  - 8)^{ \frac{ 1}{3}  } } \\  \\ \huge \red{ \boxed{ f'(x) =   \frac{2{x}^{2}}{ \sqrt[3]{( {x}^{3}  - 8) } } }}

3 0
3 years ago
Tim lives 2/3 as far from school as Felipe. Felipe walks to school and then walks to Tim’s house after school. What expression r
ioda

Answer:

4/6 i tink i am not sure if am rong let me now

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What are the answers
Yanka [14]
Total cans on bottom 4 shelves = 29 x 4 = 116
total cans on top 3 shelves = 42 x 3 = 126
total cans = 116 + 126 = 242 cans

-------------------------------------------------------------

used cans = 56
remaining cans = 242 - 56 = 186 cans
number of cans in each shelf = 9
number of shelves = 186/9 = 20 and 6 cans remaining
remaining 6 cans will be displayed in another shelf

total shelves = 20+1 = 21


6 0
4 years ago
Read 2 more answers
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