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Sindrei [870]
3 years ago
15

Solve the system by substitution. --y = 2 3x + 5y = 20

Mathematics
1 answer:
RSB [31]3 years ago
4 0

Answer:

(10, -2)

Step-by-step explanation:

first solve for y then substitute into the second equation then solve for x and there.

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A bicyclist races on a bicyclist with 13-inch-radius wheels. When she is traveling at a speed of 37 ft/sec, how many revolutions
drek231 [11]
Radius of a wheel = 13 inch
= 1.08333 ft
circumference of a wheel = 2×pi×r^2
= 2 × (22/7) × 1.08333^2 ft
= 2 × (22/7) × 1.1736 ft
= (44/7)×1.1736 ft
= 51.6384/7 ft
= 7.3769142857 ft
distance covered in one minute = 37 × 60 ft/min
= 2220 ft/min
now, revolution per minute = 2220 / 7.3769142857
= 300.93884
therefore her wheels are making 300.93884 revolutions per minute
8 0
3 years ago
3w-2+4=6<br>solving equations with like terms.​
tatyana61 [14]
Then answer should be w = 4/3 if that’s what you lookin for
6 0
3 years ago
Help 10 POINTS MATH IS NOT MY STRONG SUIT
Masja [62]

Answer:

infinite number of solutions

Step-by-step explanation:

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-4y = - 8x - 12                                   Divide by - 4

-4y/-4 = - 8x/-4 - 12/-4

y = 2x + 3

That is exactly the same line as the first given.  There is an infinite number of solutions.

6 0
3 years ago
X+52+120+105<br> What's my answer
blagie [28]
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3 years ago
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D height of the plant increases by 4 mm dor every hour of
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