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Snowcat [4.5K]
3 years ago
12

What is the difference of two polynomials (9x^2 +8x)- (2x^2 +3x)

Mathematics
1 answer:
ryzh [129]3 years ago
8 0
<span>the difference of these two polynomials is just the result of subtracting the second from the first, as follows:

</span>
9x^2 +8x -<span>(2x^2 +3x) =

</span>9x^2 +8x -<span>2x^2 -3x

then add like terms ...
(</span>9x^2-2x^2) + (8x-3x) = 7x^2 + 5x


That's it


Hope that helps
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Find the product of (x + 5)(x − 5). (1 point)
sleet_krkn [62]
FOIL (first outside inside last)

x^2-5x+5x-25 = x^2-25
4 0
3 years ago
Read 2 more answers
Iris is making hats for the members of the school marching band. She can make 3 hats in 1 1/2 hours. She wants to know how many
likoan [24]
She makes 3 hats per 1 and 1/2 hours. Therefore she makes \frac{3}{\frac{3}{2}} hats per hour. This fraction simplified is 2 hats per hour. This is the solution. 

2 hats per hour. 
7 0
3 years ago
Tickets to a concert cost $50 for each orchestra seat and $40 for each
Vsevolod [243]

Answer:

H. the number of orchestra seat is 900

Step-by-step explanation:

Step one:

let the number of orchestra seat be x

and balcony seat be y

cost of orchestra= $50 each

cost of balcony =$40 each

total tickets= 1500

x+y= 1500----------1

amount earned= $69000

50x+40y=69000--------2

The system of equation for the situation is

x+y= 1500----------1

50x+40y=69000--------2

from 1, x=1500-y

put this in equation 2

50(1500-y)+40y=69000

75000-50y+40y=69000

-10y=69000-75000

-10y=-6000

divide both sides by -10

y=-6000/-10

y=600

put y= 600 in equation 1

x+600= 1500

x=1500-600

x=900

6 0
3 years ago
Urgent help please
rosijanka [135]

Let's assume the frequency of sound be f and wave length is w.

Given that, the frequency of sound varies inversely as the wavelength.

So, we can set up an equation as following:

f*w = k Where k= constant of variation.

Other information is, the frequency of a musical note is 276 cycles per second when the wavelength is 1.2m.

So, next step is to plug in f = 276 and w = 1.2 in the above equation to get the value of k.

276 * 1.2 = k

So, k = 331.2

Next step is to plug in k = 331.2 in the above equation. So,

f * w = 331.2

Now we need to find the wave length : w when frequency : f = 600.

Therefore,

600 * w = 331.2

w = \frac{331.2}{600}

So, w = 0.552

Hence, the wave length is 0.552 m.

Hope this helps you!.

5 0
3 years ago
Next, you will make a scatterplot. Name a point that will be on your scatterplot and describe what it represents.
klio [65]

The point (12, 190) means that the temperature after 12 hours is 190 degrees Celsius

<h3>How to make a scatter plot?</h3>

To do this, we make use of the following points

(12, 190), (14, 201), (15, 301), (16, 305), (18, 350), (20, 40), (25, 450)

Where x represents the number of hours and y represents temperature

See attachment for the scatter plot.

<h3>The description of a point</h3>

To do this, we make use of the point (12, 190)

This means that the temperature after 12 hours is 190 degrees Celsius

Read more about scatter plots at:

brainly.com/question/13984412

#SPJ1

8 0
2 years ago
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