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Evgesh-ka [11]
3 years ago
8

Diane has 386 coins in her coin collection. There are a total of 112 nickels and 61 dimes in her collection the remaining coins

are pennies. Round each number to the nearest 10 to estimate how many pennies Diane has.
Mathematics
1 answer:
Dafna1 [17]3 years ago
7 0
Diane has 380 coins (rounded to the nearest 10)
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Hong made $105 for 5 hours of work. At the same rate, how much would he make for 11 hours of work? I need help plz thank you​
cupoosta [38]
105/5 = $21 per hour
21 * 11 = $231 for 11 hours
7 0
3 years ago
Determine whether it is a function or not. Give reason for your answer.
tekilochka [14]

Hey there!!

The given set is a function

( x , y ) - this is the form in which we write co-ordinates

In order to be a function , at least x values shall repeat.

Noted down all the x values

2 , -1, 4 , -2

None of the values is repeating.

Hence, the given data is a function

Hope my answer helps!

8 0
3 years ago
At noon, ship A is 50 km west of ship B. Ship A is sailing south at 10 km/h and ship B is sailing north at 20 km/h. How fast is
Lena [83]
So  hmmm check the picture below

so, we're looking for dr/dt then at 4:00pm or 4 hours later

now, keep in mind that, the distance "x", is not changing, is constant whilst "y" and "r" are moving, that simply means when taking the derivative, that goes to 0

\bf r^2=x^2+y^2\implies 2r\cfrac{dr}{dt}=0+2y\cfrac{dy}{dt}\implies \cfrac{dr}{dt}=\cfrac{y\frac{dy}{dt}}{r}\quad 
\begin{cases}
\cfrac{dy}{dt}=30\\
r=130\\
y=120
\end{cases}
\\\\\\
\cfrac{dr}{dt}=\cfrac{120\cdot 30}{130}

6 0
3 years ago
What is the period of a wave if the wavelength is 100 m and the speed is 200 m/s?
Iteru [2.4K]
It is A because I did 100 times 200 and I got 200,000
5 0
3 years ago
Read 2 more answers
Help please due today
Vadim26 [7]

Answer:

Line a. goes to table 3, line b. goes to table 2, and line c. goes to table 1.

Step-by-step explanation:

Here are the 3 lines graphed (I even labeled each for you) so you can have a bit of a visual.

Hopefully you can find the points on each graph.

(Hint: The x row represents the x coordinate of an ordered pair, and the y row represents the y coordinate of an ordered pair.)

Ordered pairs look like this btw (x,y)

Hope this helps :)

6 0
3 years ago
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