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julia-pushkina [17]

3 years ago

13

A 15 foot ladder is leaning against a wall. if the foot of the ladder is sliding away from the wall at a rate of 10 ft/sec, at w

hat speed is the top of the ladder falling when the foot of the ladder is 9 feet away from the base of the wall?

1 answer:

Step2247 [10]3 years ago

6 0

<span>Your answer is 19 ok</span>

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Simplify. <br><br> −3x3(−2x2+4x−3)

stepladder [879]

Answer:

$-3x^3(-2x^2+4x-3)$ simplifies to $6x^5-12x^4+9x^3$

Step-by-step explanation:

Given expression $-3x^3(-2x^2+4x-3)$

We have to simplify the above expression,

Consider the given expression $-3x^3(-2x^2+4x-3)$

Multiply each term in brackets by $-3x^3$ , we get,

$-3x^3(-2x^2+4x-3)=-3x^3(-2x^2)-3x^3(4x)[-3x^3(-3)$

Solving further, using $x^n\cdot x^m=x^{n+m}$ we get,

$-3x^3(-2x^2)-3x^3(4x)[-3x^3(-3)=6x^5-12x^4+9x^3$

Thus, $-3x^3(-2x^2+4x-3)$ simplifies to $6x^5-12x^4+9x^3$

4 0

2 years ago

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On a road map 1<br> inch represents<br> 1,500 miles. How<br> many miles<br> represent 4 inches?

tiny-mole [99]

Answer:

6000 miles

Step-by-step explanation:

1 in = 1500 miles

4 in = ___ miles

We simply just multiply 1500 and 4

1500 x 4 = 6000

4 in = 6000 miles

3 0

2 years ago

Please find the areas of the four rectangles and ADD<br> them together. Fill in the spaces below.

Andrei [34K]

Total area = 9 x5 =45
Total area = (6+3)(4+1)=24+6+12+3=45

4 0

3 years ago

Answer the question below from I ready

san4es73 [151]

Your answer is going to be the first one: 3^2

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2 years ago

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HELP FAST PLEASE!!! PLEASE<br><br> Indentify the interval on which the function is increasing.

Katena32 [7]

Answer: [0,3]

The line is going up from left to right between 0 and 3 on the x-axis. We use a closed bracket because it is a open circle.

5 0

2 years ago