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Amiraneli [1.4K]

2 years ago

15

9 The circumference of circle B is 90% of the circumference of circle A. (a) Find the ratio of the area of circle A to the area

of circle B.

1 answer:

AfilCa [17]2 years ago

6 0

If the circles circumference is 90% of another circles then the ratio would be 10:9, Circle A would be 10 and Circle be would be 9

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worty [1.4K]

Behshuahsbahahbabshsha

3 0

3 years ago

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Which expression has a solution of 11, if m = 1?<br><br> m - 11<br> 11 + m<br> 14 - m<br> m + 10

Natasha2012 [34]

Answer:

m+10 has the solution of 11

7 0

2 years ago

A cell phone company charges a flat rate of $3.99 per month, with an additional charge of $0.05 per minute. How many minutes did

sasho [114]

Step-by-step explanation:

Monthly bill - Flat rate = $38.44 - $3.99 = $34.45.

Minutes used = $34.45 / $0.05 = 689.

6 0

3 years ago

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1. Find the common difference and find the 75th term of the arithmetic sequence: 3, 6, 9, 12, ....

Ymorist [56]

Answer:

$\boxed{225}$

.

Step-by-step explanation:

Arithmetic sequence

$Un = a + (n - 1)b$

.

First step, find its difference

$b = U_2 - U_1$

$b = 6 - 3$

$b = 3$

.

So, we get

$a = 3$

$b = 3$

.

Finally, Let's find the 75th term

$U_{75} = 3 + (75 - 1)3$

$U_{75} = 3 + (74)3$

$U_{75} = 3 + 222$

$U_{75} = 225$

4 0

3 years ago

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One month Ravi rented4 movies and8video games for a total of $57 The next month he rented2 movies and3 video games for a total o

e-lub [12.9K]

SOLUTION

Given the question in the question tab, the following are the solution steps to get the rental cost for each movie and each video game.

Step 1: Write the representation for the two rentals

Let m represents movies

Let v represent video games

Step 2: Write the statements in form of a mathematical equation

$\begin{gathered} \text{Month 1: }4m+8v=57 \\ \text{Month 2: }2m+3v=23 \end{gathered}$

Step 3: Solve the equations above simultaneously using elimination method to get the values of m and v

$\begin{gathered} 4m+8v=57----(1) \\ 2m+3v=23----(2) \\ \text{ multiply equation 1 by 2 and equation 2 by }4 \\ 8m+16v=114----(3) \\ 8m+12v=92----(4) \\ \text{subtract equation (4) from equation (3)} \\ 4v=22 \\ v=\frac{22}{4}=5.5 \\ \text{Substitute 5.5 for v in equation 1 to get the value of m} \\ 4m+8v=57 \\ 4m+8(5.5)=57 \\ 4m+44=57 \\ 4m=57-44=13 \\ m=\frac{13}{4}=3.25 \\ m=\text{\$}3.25,v=\text{\$}5.50 \end{gathered}$

Rental cost for each movies is $3.25

Rental cost for each video games $5.50

8 0

1 year ago