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vredina [299]
3 years ago
10

Marty has saved $63. He spent $3 on a video rental. Write a ratio as a fraction in simplest form to represent what portion of hi

s savings he has left.
A. \frac{60}{63}

B. \frac{3}{63}

C. \frac{20}{21}

D. \frac{1}{21}
Mathematics
2 answers:
iVinArrow [24]3 years ago
7 0
I believe it’s B 3/63
yaroslaw [1]3 years ago
3 0

Answer:

Step-by-step explanation:

Answer is C

BECAUSE 63-3 is 60 full number first balance was 63 in simplest form 60/63 is 20/21

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Consider a steel guitar string of initial length L=1.00 meter and cross-sectional area A=0.500 square millimeters. The Young's m
Goshia [24]

Answer:

15mm

Step-by-step explanation:

we are looking for extension

To get Extension you need the original length and the strain both of which you are given

initial length L = 1.00m

the area A = 0.5mm² = 0.5 mm² = 0.5 x 10⁻⁶ m² ( we are changing to metres squared)

E = 2.0 x 10¹¹ n/m², Young's modulus

P = 1500N, the applied tension

Now to Calculate the stress.

σ = P/A (force/area) = (1500 N)/(0.5 x 10⁻⁶ m²) = 3 x 10⁹ N/m²

Also, Let β =  the stretch of the string.

Then the strain is

ε = β/L (extension/ original length)

By definition, the strain is ε = σ/E = (3 x 10⁹ N/m²)/(2 x 10¹¹ N/m²) = 0.015

Therefore β/(1 m) = 0.015β = 0.015 m = 15 mm

Answer:  15 mm

8 0
3 years ago
Find the difference. 4/9-1/3
Iteru [2.4K]
1/9

Find the common denominator, 1/3 can be multiplied to get to ninths. 1/3 is equivalent to 3/9, and so 4/9 minus 3/9 is 1/9.
7 0
3 years ago
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andrey2020 [161]
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Final answer:
The slope is 1.
Hope I could help :)
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