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d1i1m1o1n [39]
3 years ago
14

How many metres are there in 2 kilometresanswer in metres​

Mathematics
1 answer:
serg [7]3 years ago
3 0

Two kilometers equals 2000 meters because 2 times 1000 (the conversion factor) = 2000

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Charlie wants a new pair of shoes that cost $40. His mom pays 75% of the cost and charlie pays 25%. How much do they each pay?
trasher [3.6K]
In order to find out how much they both each pay, you would have to put two places in front of the percentage of the payment.
7 0
3 years ago
How would I do this at the bottom it says solution
Jlenok [28]

Answer:

all you have to do is graph them but put them in y=mx+b form first, the coordinates is the solution

4 0
3 years ago
The table shows the number of hours spent practicing singing each week in three samples of 10 randomly selected chorus members.
astraxan [27]

Answer:

B they are close together

Step-by-step explanation:

6 0
2 years ago
Check whether the function yequalsStartFraction cosine 2 x Over x EndFraction is a solution of x y prime plus yequalsnegative 2
Jobisdone [24]

The question is:

Check whether the function:

y = [cos(2x)]/x

is a solution of

xy' + y = -2sin(2x)

with the initial condition y(π/4) = 0

Answer:

To check if the function y = [cos(2x)]/x is a solution of the differential equation xy' + y = -2sin(2x), we need to substitute the value of y and the value of the derivative of y on the left hand side of the differential equation and see if we obtain the right hand side of the equation.

Let us do that.

y = [cos(2x)]/x

y' = (-1/x²) [cos(2x)] - (2/x) [sin(2x)]

Now,

xy' + y = x{(-1/x²) [cos(2x)] - (2/x) [sin(2x)]} + ([cos(2x)]/x

= (-1/x)cos(2x) - 2sin(2x) + (1/x)cos(2x)

= -2sin(2x)

Which is the right hand side of the differential equation.

Hence, y is a solution to the differential equation.

6 0
3 years ago
Karrine hit 4 more home runs than half the number of home runs Lu hit. Together they hit 10 home runs. Let x represent the numbe
Andreas93 [3]

Answer:

The number of home runs that Lu hit is 4 and the number of home runs that Karrine hit is 6

Step-by-step explanation:

Let

x ----> represent the number of home runs Lu hit

y ---> represent the number of home runs Karrine hit

we know that

Together they hit 10 home runs

so

x+y=10 ----> equation A

Karrine hit 4 more home runs than half the number of home runs Lu hit

so

y=\frac{1}{2}x+4 ---> equation B

substitute equation B in equation A

x+\frac{1}{2}x+4=10

solve for x

\frac{3}{2}x=10-4

\frac{3}{2}x=6\\x=4

Find the value of y

y=\frac{1}{2}(4)+4=6

therefore

The number of home runs that Lu hit is 4 and the number of home runs that Karrine hit is 6

5 0
3 years ago
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