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Verizon [17]
3 years ago
7

the frankiln middle school jazz band plans to have a car wash to raise $468.75 for a new sound system. in the past, they washed

an average of 125 cars at each car wash. what should they change per car so they can reach their goals?​
Mathematics
1 answer:
svetlana [45]3 years ago
8 0

Answer:

$3.75

Step-by-step explanation:

468.75/125=$3.75 per car wash

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The graph shows the exponential regression model for data representing a rabbit population after x years. Which is true of the r
tamaranim1 [39]

Answer: The graph of the regression model can be used to predict the population size for any number of years in the future.

Step-by-step explanation:

Since with help of the given graph, we can say that

The graph of the regression model is applied for the every real value of x.

Thus the statement The graph of the regression model is limited to whole-number values for x is false.

Also, the range of an exponential function is always a set of real number.

Therefore, The graph of the regression model is limited to whole-number values for y is false.

Since, for 1 year, the approximate population is given,

Therefore, The graph of the regression model cannot be used to approximate the population size for year 1 is false.

Again according to the given graph we can say that we can get the population for any number of year.

Thus, The graph of the regression model can be used to predict the population size for any number of years in the future is true.


5 0
3 years ago
Read 2 more answers
A function f is described by f(x)=A*exp(kx)+B, where A, B and k are constants. Given f(0)=1, f(1)=2, and that the horizontal asy
s2008m [1.1K]

Answer:

k = ln (6/5)

Step-by-step explanation:

for

f(x)=A*exp(kx)+B

since f(0)=1, f(1)=2

f(0)= A*exp(k*0)+B = A+B = 1

f(1) = A*exp(k*1)+B =  A*e^k + B = 2

assuming k>0 , the horizontal asymptote H of f(x) is

H= limit f(x) , when x→ (-∞)

when x→ (-∞) , limit f(x) =  limit (A*exp(kx)+B) = A* limit [exp(kx)]+B* limit = A*0 + B = B

since

H= B = (-4)

then

A+B = 1 → A=1-B = 1 -(-4) = 5

then

A*e^k + B = 2

5*e^k + (-4) = 2

k = ln (6/5)    ,

then our assumption is right and k = ln (6/5)  

8 0
3 years ago
Please help me with this problem !! (will give brainliest
katrin [286]

Answer:

(4,3)

Step-by-step explanation:

f(x) = a(x-h)^2 +k is the vertex form of a parabola

where (h,k) is the vertex

f(x) = (x-4)^2 +3

    yields a  vertex of (4,3)

7 0
3 years ago
Read 2 more answers
Write the explicit formula for an, nth the term of the sequence 17,20,23
shepuryov [24]

Answer:  17+3(n-1)

This simplifies to 3n+14

========================================

Explanation:

a_1 = 17 is the first term

d = 3 is the common difference, or the gap between terms. Eg: the jump from 17 to 20 is +3.

This means the nth term is...

a_n = a_1 + d(n-1)\\\\a_n = 17+3(n-1)\\\\a_n = 17 + 3n-3\\\\a_n = 3n+14

As a check, if we tried something like n = 2, then,

a_n = 3n+14\\\\a_2 = 3*2+14\\\\a_2 = 20

which matches with the second term of the sequence your teacher gave you. I'll let you check the other terms.

6 0
2 years ago
for a sample size of 140 and a proportion of 0.3 what is the standard deviation of the normal curve that can be used to approxim
timofeeve [1]

Answer:

The answer is b.

Step-by-step explanation:

Have a great day!!

8 0
3 years ago
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