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2 years ago

You go to the pet store and buy a goldfish which sells for $2.00. The store charges 9% sales tax. How much tax will you pay?

Mathematics

1 answer:

RideAnS [48]2 years ago

3 0

Answer:

tax=$0.18

Step-by-step explanation:

total cost = $2.18

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What is the value of x in this diagram?

mixas84 [53]

Answer:

The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!

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2 years ago

Matthew has two kinds of rice shown in this table.

MrRa [10]

He has 2 1/8 cups more brown rice than white rice

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3 years ago

A countries population in 1991 was 147 million. In 1998 it was 153 million. Estimate the population in 2017 using the exponentia

scoundrel [369]

Answer:

The population in 2017 is 171 million

Step-by-step explanation:

Let's assume population starts from 1991

so,

initial population is 147 million

so, $A=147$

we can use formula

$P=Ae^{kt}$

we can plug A=147

$P=147e^{kt}$

In 1998:

t=1998-1991=7

$P=153$

now, we can plug these values into formula and find k

$153=147e^{7k}$

Divide both sides by 147

$\frac{147e^{7k}}{147}=\frac{153}{147}$

$e^{7k}=\frac{51}{49}$

$\ln \left(e^{7k}\right)=\ln \left(\frac{51}{49}\right)$

$k=\frac{\ln \left(\frac{51}{49}\right)}{7}$

$k=0.00572$

now, we can plug it back

and we get

$P=147e^{0.00572t}$

In 2017:

t=2017-1991=26

we can plug it and find P

$P=147e^{0.00572\times 26}$

$P=170.57$

So,

The population in 2017 is 171 million

5 0

3 years ago

A small plane takes off and heads directly upwind to an airport 40 miles away. It takes 30 minutes to get there. The return trip

Eddi Din [679]

Answer:

Step-by-step explanation:

IIada, Distance = speed*time, so speed = distance/time right?

The plane went the same distance each direction.

s - w = 40/30 = 4/3

s + w = 40/20 = 2

Adding the two equations together...

s = 5/3

w = 1/3

So the speed of the wind in miles per hour is 1/3

8 0

3 years ago

Read 2 more answers

Whoever answers the question I posted will get a priceless reward it's urgent

DIA [1.3K]

Answer:

will check if I can do thanks for points

4 0

3 years ago