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mestny [16]
3 years ago
12

Compare -1.96312... and -5

Mathematics
1 answer:
Helen [10]3 years ago
3 0
-1.96312 is larger than -5

in a number line, when it is positive, the larger the number is bigger than the smaller.

however, when it is negative, the smaller number is bigger than the larger.

hope this helps
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A turtle and a rabbit engage in a footrace over a distance of 4.00 km. The rabbit runs 0.500 km and then stops for a 90.0-min na
Oxana [17]

Answer:

(a) 2.29 km/h

(b) 9 km/h

Step-by-step explanation:

For part (a) you have to apply<em> the average speed formula</em>, which is defined by:

v=\frac{d}{t}

where d is the total distance traveled and t is the total time needed.

d=\frac{4.00}{1.75}=2.29 km/h

For part (b) you have to calculate the running time (T) , which is the total time of the race minus the nap time:

The nap time in hours is:

90/60 = 1.5 h (because there are 60 minutes in one hour)

The running time is:

T= 1.75 - 1.5 = 0.25 h

Let t1 represent the time before the nap and t2 the time after the nap:

t1+t2 = T

t1+t2 = 0.25

You have to apply the formula d=vt before and after the nap:

-Before the nap, the distance traveled was 0.50 km

0.50 = v1t1

-Afer the nap, the distance traveled was 3.50 km

3.50=v2t2

But v2=2v1 (because after the nap the rabbit runs twice as fast)

You have to solve the system of equations:

t1=0.25-t2 (I)

v1t1=0.50 (II)

2v1t2=3.50 (III)

Replacing (I) in (II)

v1(0.25-t2)=0.50

Applying distributive property and solving:

0.25v1-v1t2=.050

For (III) you have that v1t2=3.50/2=1.75. Hence:

0.25v1-1.75=0.50

Solving for v1:

v1 = 9 km/h

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2 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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marshall27 [118]

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Nookie1986 [14]

Answer: -11/20

Step-by-step explanation:

1/5-3/4= 4/20-15/20= -11/20

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A human body that is performing light work generates about 400 btus of the body heat per hour while active. if an office that is
Neporo4naja [7]
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