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3 years ago

The price of an item is $21.75. You give the cashier a $20 and a $10 bill. What is the change?

Mathematics

2 answers:

Neko [114]3 years ago

8 0

Answer:

$8.25

Step-by-step explanation:

We first need to find the amount of money we give the cashier

20+10 = 30

We give the cashier 30 dollars

Our bill was 21.75

30.00

-21.75

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

We need to borrow

2 10.00

-2 1 .75

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

We need to borrow

2 9. 10 0

-2 1 .7 5

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

We need to borrow

2 9. 9 10

-2 1 .7 5

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

8 .2 5

We will get $8.25 back from the cashier

Nadya [2.5K]3 years ago

7 0

Answer:

Step-by-step explanation:

I gave total $20+$10= $30

$30-$21.75= $8.25

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jek_recluse [69]

Answer:

$0.75 per bowl

Step-by-step explanation:

120/3 = 40 = bowls of soup per container

Each container cost $30

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3 years ago

Use the Pythagorean theorem to find y.

PilotLPTM [1.2K]

Answer:

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Step-by-step explanation:

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2 years ago

A bacteria culture initially contains 100 cells and grows at a rate proportional to its size. After an hour the population has i

bija089 [108]

Answer: $\bold{a)\ P(t)=P_o\cdot e^{t\cdot ln(2.7)}}$

b) 5314

c) ln 2.7

d) 4.6 hrs

<u>Step-by-step explanation:</u>

$P(t) = P_o\cdot e^{kt}\\\\\bullet \text{P(t) is the number of bacteria after t hours} \\\bullet P_o\text{ is the initial number of bacteria}\\\bullet \text{k is the rate of growth}\\\bullet \text{t is the time (in hours)}\\\\\\270=100\cdot e^{k(1)}\\2.7=e^k\\ln\ 2.7=\ln e^k\\\boxed{ln\ 2.7=k}\\\\\text{So the equation to find the number of bacteria is: }\boxed{P(t)=P_o\cdot e^{t\cdot ln(2.7)}}\\\\\\P(4)=100\cdot e^{4\cdot ln(2.7)}\\.\qquad =\boxed{5314}$

$10,000=100\cdot e^{t\cdot ln(2.7)}\\100=e^{t\cdot ln(2.7)}\\ln\ 100=ln\ e^{t\cdot ln(2.7)}\\ln\ 100=t\cdot ln(2.7)\\\dfrac{ln\ 100}{ln\ 2.7}=t\\\\\boxed{4.6=t}$

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2 years ago

A computer downloads a 48 kilobyte file in 5 seconds. At this rate, how long will it take the computer to download a file that i

docker41 [41]

The answer is 12.5 seconds.

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x = 2.5
2.5 * 5 = 12.5

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2 years ago

Read 2 more answers

Using GCF and the distributive property, write two equivalent expressions for 30+45?

yaroslaw [1]

5x15, 3x25 because 30+45=75 and both 5x15 and 3x25 equal 75

6 0

3 years ago