3 years ago

A machine paints 340 toy boats in 45 minutes.which expression equals the unit rate per hour.

1 answer:

8 0

So what you need to do is put 340 over 45 min in a fraction form then you need to turn the 45min into 1 min and divide 340 by 45 and then you would get the answer

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Work out the formula for the nth term of the<br> quadratic sequence:<br> 19, 15, 9, 1...

Leto [7]

Answer:

Tn = -n^2 - n + 21 is the formula for the nth term.

Step-by-step explanation:

The second differences are all equal in this quadratic sequence.

Now, the quadratic sequence has a formula of Tn = an^2 + bn + c

Find the value of a in an^2 by dividing the difference by 2:

-2/2 = -1

a = -1

Since T1 is 19 and T2 is 15 we can put that into the equation and simplify:

b + c = 20

2b + c = 19

Thus, b = -1 , c = 19 and the general formula for the nth term is Tn = -n^2 - n + 21

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3 years ago

Read 2 more answers

23/2 is equivalent to which mixed number?

BaLLatris [955]

Answer:

11 1/2

Step-by-step explanation:

23÷2=11 with the reminder of 1

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4 years ago

A pilot of a helicopter plans to release a bucket of water on a forest fire. The height y in feet of water t seconds after its r

tiny-mole [99]

Answer:

well I don't know about that but we could discuss it

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4 years ago

Can someone help me plz

natta225 [31]

Answer:

1x3=3

2x3=6

3x3=9

4x3=12

6 0

4 years ago

Please help me fast!!

jolli1 [7]

Answer:

$x1 = 0 \\ y1 = 0 \\ x2 = 1 \\ y2 = - 3 \\ y - y1 = slop \times (x - x1) \\ y - 0 = \frac{ - 3 - 0}{1 - 0} \times (x - 0) \\ y = - 3x$

6 0

3 years ago