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3 years ago

Which of the following provides an object with rotational symmetry?

Mathematics

2 answers:

Harrizon [31]3 years ago

8 0

It’s the one that looks like a star a little!! :D

Nookie1986 [14]3 years ago

7 0

Answer: Choice C) Star shaped symbol

We can rotate the star symbol 90 degrees to have it line up with its original image. The before and after images would be identical after doing such a rotation. So this figure has rotational symmetry.

The other figures would change if we rotated them some angle x such that $0 < x < 360$ , so they do not have rotational symmetry.

You might be interested in

Evaluate the expression : common log of square root 9/25.

tekilochka [14]

You want log √(9/25). Recognizing that √9 = 3 and that √25 = 5, we get

log 3/5, which by rules of logs comes out to log 3 - log 5.

To four decimal places:

log 3 - log 5 = 0.4771 - 0.6990, or -0.2218.

4 0

3 years ago

A easy question help.

Citrus2011 [14]

Answer:

170ft

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Sarah took the advertising department from her company on a road trip to meet with a potential client including Sarah a total of

Svetach [21]

Sarah has spent 7 first class tickets, and 6 coach tickets that totals for 13 people that took the trip.

$1040 * 7 = $7280

$140 * 6 = $840

$7280 + $840 = $8120 for Sarah's total budget she spent for 7 first class tickets and 6 coach tickets for 13 people that took the trip.

Answer:
7 first class tickets.
6 coach tickets.

Hope this helps!
<em>
</em><em>~ ShadowXReaper069</em>

7 0

3 years ago

Four adults and five children go to see a movie and buy $15 worth of concessions. The total cost of their trip is $71. If each c

noname [10]

Answer:

$7.75

Step-by-step explanation:

Given: Adults = 4, Children = 5, All worth = $15, Total cost = $71, Each child's ticket = $5

To find: How much the adult tickets are

Solution: Use the 5 tickets at $5 to get $25

Add the $15 for concessions to reach $40

25 + 15 = 40

Subtract $40 from the 71 spent to get $31

71 - 40 = 31

Now, divide the 31 by 4 for the number of adults which equals $7.75

31 ÷ 4 = 7.75

So, the cost of the adults' tickets is $7.75

4 0

3 years ago

If $8700 is invested at 3% annual simple interest, how much should be invested at 6% annual simple interest so that the total ye

True [87]

First off, see how much 8700 as principal, yields at 3% APR
that is $\bf \qquad \textit{Simple Interest Earned}\\\\
I = Prt\qquad 
\begin{cases}
I=\textit{interest earned}\\
P=\textit{original amount deposited}\to& \$8700\\
r=rate\to 3\%\to \frac{3}{100}\to &0.03\\
t=years\to &1
\end{cases}$

it will yield some amount

subtract that amount from 393
the difference is how much the yield will be on the 6% investment
so

$\bf \qquad \textit{Simple Interest Earned}\\\\
I = Prt\quad 
\begin{cases}
I=\textit{interest earned}\\
P=\textit{original amount deposited}\to& \$8700\\
r=rate\to 3\%\to \frac{3}{100}\to &0.03\\
t=years\to &1
\end{cases}
\\\\\\
\implies \boxed{?}\\\\
-----------------------------\\\\
\textit{how much to invest at 6\%?}
\\\\\\
$

$\bf \qquad \textit{Simple Interest Earned}\\\\
(393-\boxed{?}) = Prt\quad 
\begin{cases}
I=\textit{interest earned}\\
P=\textit{original amount deposited}\to& \$\\
r=rate\to 6\%\to \frac{6}{100}\to &0.06\\
t=years\to &1
\end{cases}
\\\\\\
\textit{solve for "P", to see how much should the Principal be}\\\\
\textit{keep in mind that }P+\boxed{?}=393\leftarrow \textit{both yields added}$

6 0

2 years ago