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Anon25 [30]
2 years ago
8

. Using the rounding off technique, find the rough estimated difference of the given decimals.

Mathematics
1 answer:
nikitadnepr [17]2 years ago
3 0

Answer:

19. 188

20. 18

21. 5

21. 4

Step-by-step explanation:

634.58 would round up to 635 and 436.79 would round up to 437.

20. 37.86 would round up to 38 and 19.92 would round up to 20.

21. 14.49 would round to 14 and 8.59 would round up to 9.

22. 7.45 would round down to 7 and 2.93 would round up to 3.

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igor_vitrenko [27]

a(x+1)(x-1)+b(x-2)(x+1)+(x+1)^2=9x^2-x-10

(x+1)(a(x-1)+b(x-2)+(x+1))=(x+1)(9x-10)

a(x-1)+b(x-2)+x+1=9x-10

Now this equation is much simpler!

(a+b)x-a-2b+x+1=9x-10

(a+b)x-a-2b=8x-11

(a+b-8)x-a-2b-11=0

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3 years ago
PLSSS HELP IM DESPERATE!!
Lapatulllka [165]

Answer:

graph c

Step-by-step explanation:

Given

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The absolute value function always gives a positive result, however, the expression inside can be positive or negative , that is

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or

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Eva8 [605]
66 is the answer
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2 years ago
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andrew-mc [135]

Answer:

A. 72cm

Step-by-step explanation:

Figure a is a convex pentagon, a convex pentagon is a pentagon that does not have an internal angle greater than

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An easier thing to remember is that it does not have an angle pointing inwards like b, none of its angles/edges point toward the shape/inside

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3 years ago
A group of 8 people are picking up litter along a 4 over 5 km length of road. Each person is assigned an equal section of the ro
zepelin [54]

You know that 1 km=1000 m, then the length of the road \dfrac{4}{5} km is \dfrac{1000}{5} \cdot 4=200\cdot 4=800 metres.

A group of 8 people are picking up litter along the road and each person is assigned an equal section of the road. The whole road has length 800 m, then for each person will be assigned 800:8=100 m of the road.

If you want to know the length of each part in km, then 1 m=0.001 km and 100 m =1 m·100=0.001 km ·100=0.1 km.

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