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Andreyy89
3 years ago
11

Expand and combine like terms. (4b²+3)(4b²-3)​

Mathematics
1 answer:
Ad libitum [116K]3 years ago
8 0

Answer:

16b4=9

Step-by-step explanation:

(4b²+3) (4b²-3)

16b4-12b²+12b²-9

16b(raised to power 4)-9

16b4-9

collect like terms

16b4=9

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A car requires 22 litres of petrol to travel a distance of 259.6 km.Find
Anon25 [30]

Answer:

Step-by-step explanation:

1. A car requires 22 litres of petrol to travel a distance of 259.6 km

what is the distance that the car can travel on 63 ltr of petrol

22ltr = 259.6km

63ltr=

cross multiply

{63 x 259.6}/22 = 16354.8/22 = 743.4 km

A car requires 22 litres of petrol to travel a distance of 259.6 km, it would require 63 ltr of petrol to travel 743.4km

2. To travel a distance of 2013.2 km

we would need to calculate the amount of fuel

A car requires 22 litres of petrol to travel a distance of 259.6 km

what amount of fuel would it require to travel 2013.2km

22ltr = 259.6km

xltr = 2013.2km

x is the value of petrol to cover 2013.2km

cross multiply

(2013.2 x 22)/259.6

44290.4/259.6 = 170.610169492≈170.6 ltr

A car requires 22 litres of petrol to travel a distance of 259.6 km, it would require 170.6 ltr of petrol to travel 2013.2km

if 1ltr is $1.99

170.6 ltr is (170.6 x 1.99)/1 = $339.494≈$339.5

The price of fuel consumed for 2013.2 km at 1 liter of petrol at $1.99 is $339.5

5 0
3 years ago
5(wx-v)=9(x+v)<br> make x the subject
Zepler [3.9K]
Expand the brackets first
5(wx-v) = 9(x + v) 
5wx - 5v = 9x + 9v

Get all x's on one side and everything on on the other side
9x - 5wx = 9v + 5v

factorise out the x
x(9-5w) = 14v

then divide by 9-5w
x = 14v/(9-5w)


3 0
3 years ago
Read 2 more answers
What is the surface area of this triangular prism rounded to the nearest tenth?
Vesna [10]
The answer is C.
SA = bh + (s1 + s2 + s3)H
SA = (6.8)(5.1) + (6.8 + 5.1 + 8.5)(2.5) = 85.68
8 0
3 years ago
Read 2 more answers
If you are doing area in mathematics and the base is 16 and the height is 5 but there are 4 sides, don't u need to multiply 16x5
Murrr4er [49]
No, you would only need to multiply 16 by 5 once
4 0
3 years ago
This is due today and it would be awesome if someone could do one of these problems so I can see how to do them thanks :)
g100num [7]
23.) x=2
24.)same
25.)x=3
26.)x=2
27.)x=3
28.)x= -35/11
6 0
3 years ago
Read 2 more answers
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