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3 years ago

What is the variable

Mathematics

1 answer:

krek1111 [17]3 years ago

5 0

A quantity that may change

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plz help !! write two real world situations that you can model using the exponential function f(x)=2 to the power of x

Margaret [11]

Answer:

Two real world situations are shown below.

Step-by-step explanation:

Initial population of a certain bacteria is 1 thousand and the population doubles in each hour. So, population of bacteria (in thousands) after x hours is

$f(x)=1(2)^x$

$f(x)=(2)^x$

A person invests 1 lakh rupees in shares and the amount is twice at the end of each year. So, total amount (in lakhs) after x years is

$f(x)=1(2)^x$

$f(x)=(2)^x$

7 0

3 years ago

ms.morgan bought 3.5 pounds of bananas at $0.51 a pound and 4.5 pounds of pineapple at $1.19 a pound.how much did she pay for th

Tanzania [10]

3.5*0.51 = 1.785
4.5*1.19 = 5.355
1.785 + 5.355 = 7.14
Ms Morgan paid $7.14c for the bananas and pineapples.

4 0

3 years ago

Read 2 more answers

Find the square. (1/4A + 1/4B)^2<br><br> a) 1/16A^2 + 1/8AB + 1/16B^2<br> b) 1/4A^2 + 1/8AB + 1/4B^2

alisha [4.7K]

$(a + b)^2 = a^2 + 2ab + b^2$

$(\dfrac{1}{4}A + \dfrac{1}{4}B)^2 =$

$= \dfrac{1}{16}A^2 + \dfrac{1}{8}AB + \dfrac{1}{16}B^2$

Answer: A.

Another way to solve by factoring 1/4.

$(\dfrac{1}{4}A + \dfrac{1}{4}B)^2 =$

$= [\dfrac{1}{4}(A + B)]^2$

$= (\dfrac{1}{4})^2(A + B)^2$

$= \dfrac{1}{16}(A^2 + 2AB + B^2)$

$= \dfrac{1}{16}A^2 + \dfrac{1}{16}2AB + \dfrac{1}{16}B)^2$

$= \dfrac{1}{16}A^2 + \dfrac{1}{8}AB + \dfrac{1}{16}B)^2$

6 0

3 years ago

Read 2 more answers

Maria calls her mother 5 times every week. Let w represent the number of weeks and c represent the total number of times Maria c

galina1969 [7]

Answer:

Equation: 5w = c

Step-by-step explanation:

${ \tt{w \: \alpha \: c}} \\ { \tt{w = kc}}$

k is a constant of proprtionality

${ \tt{1 = (k \times 5)}} \\ { \tt{k = \frac{1}{5} }}$

» Therefore, equation becomes:

${ \tt{w = \frac{1}{5}c }} \\ \\ { \boxed{ \tt{5w = c}}}$

8 0

2 years ago

Find the value of x if -x+4=-9

vladimir1956 [14]

Answer:

-13

Step-by-step explanation:

x+4=-9

-4 -4

x= -13

If you did 9+4 you'd get 13. But instead its negative because x is negative.

6 0

3 years ago