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AnnZ [28]
3 years ago
9

Which expression is equivalent to the given expression? (10c6d-5)(2c-5d4)

Mathematics
1 answer:
Vlad1618 [11]3 years ago
8 0

Answer:

120c²d - 1200cd² -10c + 100d

Step-by-step explanation:

We will first of all evalute inide the bracket then we expand it.

(10c6d-5)(2c-5d4)

=(60cd-5)(2c-20d)

= 60cd*2c -60cd*20d -5*2c +5*20d

= 120c²d - 1200cd² -10c + 100d

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The first one reflects over the y-axis, or x=0. One point is (-2, 1) and its corresponding point is (2, -1). The midpoint is found by the average of the two coordinates, which is (0,0). Pick another pair of points and find the midpoint which you should get (x,0).
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3 years ago
3. 3 hours worked for $12; 9 hours worked for $36
nydimaria [60]

Answer:

What do we have to solve for this?

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3 years ago
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Does anyone know this?
monitta
The answer should be 101.
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3 years ago
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peter buys 12 bunches of bannas for 9.00. use a ratio table to determine how much peter will pay for 8 bunches.
erik [133]

We are given that Peter buys 12 bunches of bananas for 9.00.

We need to determine how much peter will pay for 8 bunches.

Let us set up proportion now.

12 bunches of bananas for 9.00 = 12 : 9

Let us assume Peter will pay for 8 bunches = $x.

Therefore, 8 bunches of bananas for x = 8 : x.

<h3>Setting up proportion:</h3><h3>\frac{12}{9} = \frac{8}{x}</h3>

On cross-multiplying, we get

12x = 9×8

12x = 72.

Dividing both sides by 12, we get

\frac{12x}{12} =\frac{72}{12}

x=6.

<h3>Therefore, Peter will pay $6 for 8 bunches.</h3>
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3 years ago
The cruising speed of the bullet train will be at least 170 miles per hour. Use s to represent the train's cruising speed (in mi
salantis [7]

Answer:

s ≥ 170

Step-by-step explanation:

The problem raises the following statement: "The cruising speed of the bullet train will be at least 170 miles per hour"

Which means that the train has a speed of 170 miles for now or higher, knowing this we can pose the inequality.

Knowing that "s" is the train's cruising speed (in miles per hour), we have to:

s ≥ 170

This would be the inequality that the statement represents.

6 0
3 years ago
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