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Murrr4er [49]
3 years ago
10

What is the difference of the polynomials (12x^2 - 11y^2-13x) - (5x^2 - 14y^2-9x)

Mathematics
2 answers:
charle [14.2K]3 years ago
7 0
7x^2 -25y^2 -4x
Is the difference of the polynomials
Stolb23 [73]3 years ago
4 0

Answer:

A. 7x^2 + 3y^2 - 4x

Step-by-step explanation:

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In a right triangle, CosA=0.352 and SinA=0.936 What is the approximate value of tanA?
mr_godi [17]
\tan A=\frac{\sin A}{\cos A}

Proof: \sin\div\cos=\frac{o}h\div\frac{a}h=\frac{o}h\times\frac{h}a=\frac{oh}{ha}=\frac{o}a=\tan

\cos A=0.352,\ \sin A=0.936

\tan A=\frac{0.936}{0.352}

\boxed{\tan A=2.65\overline{90}} <em>(round as needed)</em>
6 0
3 years ago
Read 2 more answers
One person can do a certain job in 20 minutes and another person can do the same job in twenty eight minutes. how many minutes w
Mamont248 [21]
I'm terrible at math, so I'm sorry if I'm totally wrong, but I'm assuming you just take the average:

20+28=48m
48/2=24m

On average, it may take them 24m if they work together.
8 0
4 years ago
Find a 12 in the sequence -1, -3, -9, -27, ...
andrezito [222]

Answer:

multiple by -3

and that will be the answer

4 0
3 years ago
A local yoga studio
Andrews [41]

Answer:

Let's call the first studio, yoga studio A.

Let's call the second studio, yoga studio B.

The equations:

Yoga Studio A: y=10x+55

Yoga Studio B: y=12.5x+25

So, for 12 classes:

Yoga Studio A: y=10(12)+55, y=175

Yoga Studio B: y=12.5(12)+25, y=175

These two numbers are equal, so Griffin is right.

For 10 classes:

Yoga Studio A: y=10(10)+55, y=155

Yoga Studio B: y=12.5(10)+25, y=150.

These two numbers are not equal, so Gigi is wrong.

Let me know if this helps!

5 0
3 years ago
A container ship left port last week caring some good weighing a total of 125,890 tons today I stopped in another port to unload
11Alexandr11 [23.1K]

Answer:

Step-by-step explanation:

You need to be specific.  Did the weight decrease by 60 tons or 60 pounds?  I assume tons, but in math, you can't assume.

This problem seems overly simple, so I am wondering if some information is missing.  With the given information and assuming the decrease was in fact 60 tons, you would have:

125,890 - 60 = 125,830 tons

8 0
4 years ago
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