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ehidna [41]
3 years ago
14

Factor completely: 3x^2 – 21x + 30

Mathematics
2 answers:
vladimir2022 [97]3 years ago
7 0
The answer is going to be A.

You first factor 3 out getting x^2-7x+10

Then you factor that so (x-2)(x-5)  then tack that 3 onto the end so 3(x-2)(x-5)
Soloha48 [4]3 years ago
4 0
A because 3(x^2-7x+10)
3(x-2)(x-5) 

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What's the slope?<br><br><br> Please help!!!
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8 0
3 years ago
Write 0.002349 in scientific notation.
Studentka2010 [4]

Hi! I'm happy to help!

To solve this, we first need to know what scientific notation is. Scientific notation is a way a number is written. You write it using a number ranging from 1 to <10. Then, you multiply this number by 10^{x}.

In order to make this number reasonable for scientific notation, you have to move the decimal a certain amount of places. In this case you move it 3 places to the right to make your number 2.349. Since we moved it 3 places to the right our x will be -3. (If we'd moved it 3 places to the left, our x would be positive 3.)

So now, we insert our numbers:

<u>2.349·</u>10^{-3}<u></u>

<u>You write 0.002349 like 2.349·</u>10^{-3}<u>, when it is in scientific notation.</u>

I hope this was helpful, keep learning! :D

3 0
2 years ago
A tree casts a shadow that is 18 feet, in length. If the angle of elevation is 28, which of the following best represents the he
Liono4ka [1.6K]
The first step for this problem should always be to draw out the triangle so that you can right down the angles and side lengths. Afterward, you can use SOHCAHTOA to find the height of the tree. You would use tangent. The equation you would use is tan(28°)x/18. After solving for x, you will find the answer which is approximately 9.57 feet.

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4 0
3 years ago
In order to figure out who will go first in a game, your friend asks you to pick a number between 1 and 25. What are the possibl
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Answer:

Step-by-step explanation:

The possible outcomes include 1, 2, 3, etc., up through 25.  This in itself is insufficient to specify who will go first.  There must be some further criteria.

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3 years ago
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Step-by-step explanation:

Given

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Similarly, 3 plain pizzas and 5 sodas cost $45.90

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\Rightarrow x+2y=15.95\\\Rightarrow 3x+5y=45.90

Therefore, the above two equations represents the given situation.

4 0
3 years ago
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