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liubo4ka [24]
3 years ago
15

I neeeeeeeeeeeeeed help

Mathematics
2 answers:
Firlakuza [10]3 years ago
6 0
It’s D it’s the last one
snow_lady [41]3 years ago
3 0

Answer:

it should be C) 2+1=3

Step-by-step explanation:

the identity property is when zero is added to any number, or any number is multiplied or divided by 1, and in the end you get the original number.

Process of elimination:

5/1=5, so 5=5, that can't be the answer.

4x1=4. 4=4, that cant be the answer either.

3-0=3, and 3=3, thats also part of the identity property.

2+1=3, 2 does not =3,

therefore c is the only option not showing the identity property.

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2 years ago
I walk each day to school. By what percentage would I need to increase my usual average speed in order for the journey to take 2
lesya692 [45]

Answer:

25%

Step-by-step explanation:

Let v, t be the current average speed and the time taken to reach the school respectively.

As distance = speed x time, so,

distance, d=vt...(i)

Let V be the new average speed in order to to take 20% less time than t.

So, time taken with speed V = t-20% of t = t- 0.2t= 0.8t

As distance is constant, so

d= V(0.8t)= 0.8Vt

hBy using equation (i), we have

0.8Vt = vt

0.8 V = v

V= v/0.8=1.25v

Therefore, the percentage increase in the average speed = \frac{V-v}{v}\times 100

=\frac{1.25v-v}{v}\times 100

=25%

Hence, the percentage increase in the average speed is 25%.

8 0
2 years ago
Caluculate the quotient <br> 8/9 divided by 4/9
Svet_ta [14]
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