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2 years ago

Work out the area of this circle Take pie to be 3.142 and give your answer 1 decimal place

Mathematics

1 answer:

xxMikexx [17]2 years ago

3 0

Answer:

Step-by-step explanation:

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The number of subscribers y to a website after t years is shown by the equation below:

choli [55]

$\bf \qquad \textit{Amount for Exponential Growth}\\\\
A=I(1 + r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
I=\textit{initial amount}\\
r=rate\to r\%\to \frac{r}{100}\\
t=\textit{elapsed time}
\end{cases}\\\\
-------------------------------\\\\
y=50(1.75)^t\implies 
\begin{array}{llllll}
y=&50(&1+&0.75)&^t\\
\uparrow &\uparrow &&\uparrow &\uparrow \\
A&I&&r&t
\end{array}\qquad \cfrac{r}{100}=0.75
\\\\\\
r=100\cdot 0.75\implies \boxed{r=75\%}$

the amount is a positive "r", rate, thus is a growth equation, so it increased.

5 0

2 years ago

Read 2 more answers

A coin is flipped 150 times. The results of the experiment are shown in the following table:

Sergio [31]

The answer is C because theoretically it should have a 50% of landing heads but instead it lands heads 56% of the time. Thus this is 6% higher than 50%. It's not D because there is not specified detail of how the person got this data so you can assume that the person did a fair survey/data collection.

8 0

2 years ago

Jen picked 3/4 of a gallon of strawberries in half an hour . If she keeps picking strawberries at the same rate, how many gallon

Norma-Jean [14]

3 gallons of strawberry will collected by Jen in 2 hours.

Solution:

Jen picked $\frac{3}{4}$ of a gallon of strawberries in half an hour

Therefore,

$\frac{1}{2} \text{ hour } = \frac{3}{4} \text{ gallon }$

Therefore, for one hour she picks up,

Multiply both sides of above equation by 2

$1 \text{ hour } = \frac{3}{2} \text{ gallon }$

She keeps picking strawberries at the same rate

To find: Gallons will she have picked in 2 hours

Gallons picked in 2 hour = 2 x gallons picked in 1 hour

$\text{ Gallons picked in 2 hour } = 2 \times \frac{3}{2} = 3$

Thus 3 gallons of strawberry will collected by Jen in 2 hours.

8 0

2 years ago

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The price of mailing small packages is $0.32 for the first ounce and $0.21 for each additional ounce. Sandra paid $1.16 to mail

34kurt

The answer is 5 ounces. We can tell this by subtracting 0.32 from 1.16 and then dividing the product (0.84) by 0.21. This should give you 4, but then you have to remember that you subtracted the first ounce that costs 0.32, so when you add it back, you should have an answer of 5 ounces.

4 0

2 years ago

Read 2 more answers

CONSTRUCTED-RESPONSE ITEM 14. Four people each deliver food to people's homes.

rodikova [14]

Answer:

I'm Pretty Sure it is $16.20

Step-by-step explanation:

First, you add 2.50 + 0.20 and you get 2.70. Then, you get 2.70 x 6 miles and you get 16.20. Hope this helps! :)

3 0

2 years ago