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Ratling [72]
2 years ago
12

The total cost of a tie and a pair of pants was $87.18. If the price of the tie was $2.12 less than the pair of pants, what was

the price of the tie? Express your answer as a simplified fraction or a decimal rounded to two places.
Mathematics
1 answer:
eimsori [14]2 years ago
8 0
Hey, the tie would cost $42.53
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to practice for an Ironman competition John swim 0.86 kilometers each day for three weeks how many meters did he swim in those 3
NARA [144]
1 kilometers =1000 meters
0.86km=0.86*1000=860m
John swam 860 meters each day.
1 week = 7 days
3weeks=3*7=21
21*860=18060 m
Therefore he swam 18060 meters in those three weeks.
6 0
3 years ago
Read 2 more answers
The kinetic energy (in joules ) of a moving object can be calculated from the expression 1/2mv to the second power, where m is t
yulyashka [42]

E = 1/2 m v^2

E = 1/2 (0.145) (40)^2

E = 0.0725 x 1600

E = 116 kg m^2/s^2

1 joule = 1 kg m^2/s^2

so here E in joules is 116 joules

so E = 116 joules

7 0
3 years ago
The illuminance of a surface varies inversely with the square of its distance from the light source.If the illuminance of a surf
VashaNatasha [74]

Answer:

Distance between the surface and source of light will be increased by 6 meters.

Step-by-step explanation:

The illuminance of a surface varies inversely with the square of ts distance from the light source.

Let illuminance of the surface = x lumens per square meter

and distance from a light source = y meter.

Now x ∝ \frac{1}{y^{2} }

Or x=\frac{k}{y^{2} } [k = proportionality constant]

Now we will find the value of k.

k = xy²

k = 120×(6)²

k = 4320

We have to calculate the distance of the source if illuminance of the surface is 30 lumens per square meter.

30=\frac{4320}{y^{2}}

y² = \frac{4320}{30}

y² = 144

y = √144 = 12 meters

So the source of the light will be shifted away from the surface = 12 - 6 = 6 meters.

6 0
3 years ago
Working alone, it take jill 8.4 hours to pick forty bushels of apples. Maria can pick the same amount in 15 hours. If they work
konstantin123 [22]

Answer:

answer is 5.4 hours (rounded)

Step-by-step explanation:

8.4 divided by 40 is 4.76

15 divided by 40 is 2.66

add those two up and it'll be 7.42

7.42 divided by 40 is 5.3908

6 0
3 years ago
Parker was giving this problem on his homework: 6x*2 - 4y + 2x + 4x*2 + 8y. Here is the work he show to simplify the expression
Alex_Xolod [135]
In the fourth step, he didn’t put the “negative” sign for 4.
6 0
3 years ago
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