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Sav [38]
3 years ago
12

Expand. Your answer should be a polynomial in standard form. 8r^2(r^2-2)=

Mathematics
1 answer:
balandron [24]3 years ago
3 0

Answer:

8r^4 - 16r^2

2Step-by-step explanation:

8r^2(r^2-2)

Multiply everything inside the brackets by the term outside of it.

8r^4 - 16r^2

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Find the T.A. for the prism and also find the L.A. for the prism
garik1379 [7]
Use <span><span> bh</span> + (S</span>1+ S2 + S3<span>)H to find the T.A.
</span>Triangle: base 'b', height 'h', and sides S1, S2 and S3<span> 
</span>use L=Ph to find L.A. (<span>the surface area of all sides, or faces, that are not the base)</span>
L= the lateral area of the prism, P= the perimeter of one base, h= the height of the prism
5 0
3 years ago
Read 2 more answers
If y= x+9 <br>______<br>3-x<br>find the value of y when x=5​
Artemon [7]

Answer:

-28

Step-by-step explanation:

y/3-x = x+9

x=5

=>y/3-5=5+9

=>y/-2=14

=>y = - 28

8 0
3 years ago
One hundred people in your neighborhood always drive to work between 7:30 and 8:00 A.M. and arrive 30 minutes later. Why must tw
Tcecarenko [31]

Answer: Pigeonhole Principle

Step-by-step explanation:

The Pigeonhole Principle espouses that if there are more objects than the places the objects are supposed to fit into, some of those places will have more than one object. For instance, if there are 20 pigeons and only 19 pigeonholes, one pigeonhole will have more than one pigeon.

If one hundred people in your neighbourhood leave between 7:30 and 8:00 A.M. and arrive 30 minutes later that means they will arrive between 8:00 and 8:30 A.M. This means that 100 people will have to arrive in 30 minutes.

We would have to fit 100 people in 30 minutes. The minutes are the pigeonholes and the people are the pigeons. There will therefore be a situation where at least 2 people will arrive at the same minute because there are many more people than minutes for them to arrive in.

7 0
3 years ago
Just ignore number 7 it’s 8 I need help on, it tried to attempt it myself but it wasn’t working for me
ArbitrLikvidat [17]

1 hm=100m

1.5hm=150 meters each tower is from each other.

500km(1000m/1km)=500,000 meters the wire covers.

500,000/150 = 3333.33 towers. Just because we want to be safe and have enough towers we can say we have 3334 towers in the span of 500,000 meters.

B)

1kV=1000V

500kV(1000V/1kV)= 500,000 V

There are 1.2 volts in a AA battery so we divide 500,000/1.2 = 416666.67 times larger

3 0
3 years ago
In the Kite Club, there are a total of 21 kids. There are 3 more girls than boys. Write two equations and graph to find the numb
zavuch27 [327]
The answer is D. Minus 3 from 9 then divide by 2.
8 0
2 years ago
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