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matrenka [14]
2 years ago
10

Pablo created the bar model and equation after paying a $9.79 lunch bill with a $20 bill.

Mathematics
1 answer:
schepotkina [342]2 years ago
3 0

\\ \rm\hookrightarrow 20=c+9.79

Simply

\\ \rm\hookrightarrow c=20-9.79=10.21

Yes it shows the additional charge

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A rock is dropped from a height of 88.6 m and falls toward Earth in a straight line. In t seconds the rock falls 4.9t2 meters.
Allushta [10]

Answer:

The average speed is 9.8 meter per second in the first two seconds

Step-by-step explanation:

Complete Question

What is the average velocity of the rock in first 2 secs?

Solution

Distance travelled in first two seconds  

4.9 t^2 = 4.9*2*2 = 19.6 m

Average speed = S2-S1/2 = 19.6-0/2 = 9.8 meter per second  

8 0
3 years ago
A store receives tomatoes in boxes of 40 tomatoes each. About 4 tomatoes per box cannot be sold due to damage. Write an algebrai
monitta

Answer:

40b - 4b    or 36 b

Step-by-step explanation:

No. of tomatoes in each box = 40

No. of box shipped = b

No. of tomatoes in those b box = b*No. of tomatoes in each box = 40b

No. of tomatoes damaged in each box = 4

No. of box shipped = b

No. of tomatoes damaged in those b box = b*No. of tomatoes damaged in each box = 4b

Thus, total no. of tomatoes that can be sold by store = No. of tomatoes in those b box - No. of tomatoes damaged in those b box  = 40b - 4b

Algebraic expression to express the no. of tomatoes that can be sold from those b box is

40b - 4b = 4b(10-1) = 4b(9) = 36b (Answer)

3 0
3 years ago
What are the disadvantages of driverless cars? Check all that apply.​
Gennadij [26K]

Answer:

2 3 and 4

Step-by-step explanation:

3 0
3 years ago
Powers of 3 to 1000 that is it
Inessa05 [86]
That will be 3,000 I guess I tried to help
7 0
3 years ago
What is the fourth term in the binomial expansion of (2x – y) 7?
nata0808 [166]

Answer:

(7C4) (2x)^4 (-y)^{7-4}

And replacing we got:

35 (2^4) x^4 (-y)^{-3}

And then the final term would be:

-560 x^4 y^3

Step-by-step explanation:

For this case we have the following expression:

(2x-y)^7

And we can use the binomial theorem given by:

(x+y)^n =\sum_{k=0}^n (nCk) x^k y^{n-k}

And for this case we want to find the fourth term and using the formula we have:

(7C4) (2x)^4 (-y)^{7-4}

And replacing we got:

35 (2^4) x^4 (-y)^{-3}

And then the final term would be:

-560 x^4 y^3

8 0
2 years ago
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