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Natali5045456 [20]

2 years ago

14

the most efficient first step in the process to factor out the trinomial 2x3-18x2+40x is: A) Factor out -1 B) Factor out 2x C) F

actor out (x-5) D) Factor out 2

1 answer:

MrMuchimi2 years ago

7 0

B is the answer I hope this helps you.

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Martha earned $180 during the summer doing chores. She bought 3 books worth $14 each using her chore money. How much money was l

Viktor [21]

Answer:

$138

Step-by-step explanation:

We can first turn the words into a mathematical equation by substituting words with the information we have:

Total earning - ( Price of three books)

$180 - (Price of one book x 3)

$180 - ($14 x 3)

Finally, after we have created the mathematical equation, we solve it!

$180 - ($14 x 3)

$180 - $42

$138

6 0

2 years ago

conor earns $9 an hour for yard work. he raked leaves one afternoon and earned $29.25. how many hours did he rake leaves? ANSWER

Assoli18 [71]

Answer:

He worked for 3.25 hours

Step-by-step explanation:

29.25 / 9 = 3.25

:D

6 0

2 years ago

Read 2 more answers

What is 24/9 in simplest form

qaws [65]

Answer:

2 2/3

Step-by-step explanation:

hope this helps :)

don't be afraid to ask questions

5 0

1 year ago

Read 2 more answers

Let w = x2 + y2 + z2, x = uv, y = u cos(v), z = u sin(v). use the chain rule to find ∂w ∂u when (u, v) = (9, 0).

jasenka [17]

By the chain rule,

$\dfrac{\partial w}{\partial u}=\dfrac{\partial w}{\partial x}\cdot\dfrac{\partial x}{\partial u}+\dfrac{\partial w}{\partial y}\cdot\dfrac{\partial y}{\partial u}+\dfrac{\partial w}{\partial z}\cdot\dfrac{\partial z}{\partial u}$
$\dfrac{\partial w}{\partial u}=2xv+2y\cos v+2z\sin v$

We also have $x(9,0)=0$ , $y(9,0)=9$ , and $z(9,0)=0$ , so at this point we get

$\dfrac{\partial w}{\partial u}(9,0)=2\cdot9\cdot\cos0=18$

7 0

2 years ago

Solve: -rt - 80 > 30 for r. show your work!

vaieri [72.5K]

<h2>Steps:</h2>

So to solve for a variable, we must isolate it onto 1 side of the inequality. In this case, we must isolate r. Firstly, add 80 to both sides of the inequality:

$-rt>110$

Next, divide both sides by t:

$-r>\frac{110}{t}$

Next, multiply both sides by -1. Since we are multiplying by a <em>negative</em> number, flip the inequality symbol as well:

$r$

<h2>Answer:</h2>

<u>In short, your final answer is $r$ </u>

7 0

2 years ago