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DanielleElmas [232]
3 years ago
10

3y - 15 =y + 1 solve for y

Mathematics
1 answer:
USPshnik [31]3 years ago
8 0

A n s w e r:

y = 8

Hope this helps!

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Two bicycles are traveling along perpendicular roads. Bicycle A is traveling due east at 4 mi/hr, and bicycle B is travelling du
nordsb [41]

Answer:

Step-by-step explanation:

Given

speed of cyclist A is v_a=4 mi/hr

speed of cyclist B is v_b=6 mi/hr

At noon cyclist B is 9 mi away

after noon Cyclist B will travel a distance of 6 t and cyclist A travel 4 t miles in t hr

Now distance of cyclist B from intersection is 9-6t

Distance of cyclist A from intersection is 4 t

let distance between them be z

z^2=(9-6t)^2+(4t)^2

Differentiate z w.r.t time

2z\frac{\mathrm{d} z}{\mathrm{d} t}=2\times (9-6t)\times (-6)+2\times (4t)\times 4

z\frac{\mathrm{d} z}{\mathrm{d} t}=(-6)(9-6t)+4(4t)

\frac{\mathrm{d} z}{\mathrm{d} t}=\frac{16t+36t-54}{z}

Put \frac{\mathrm{d} z}{\mathrm{d} t}\ to\ get\ maximum\ value\ of\ z

therefore 52t-54=0

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t=\frac{27}{26} hr

4 0
3 years ago
Which value for x makes the sentence true?
Alex787 [66]

Answer:

A

Step-by-step explanation:

68.54 + x = 76.7

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5 0
4 years ago
A figure is graphed on a coordinate grid as shown. The figure is reflected across the y-axis to create a new figure. Which rule
Svetlanka [38]

Answer:

i think its the . (x, y)→ (y, x)

Step-by-step explanation:

4 0
3 years ago
X intercept of y=-4x+11
Nina [5.8K]

Answer: x-intercept is 11/4

Step-by-step explanation: 0 = -4x + 11 --> -11 = -4x --> 11/4 = x

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The answer is 5.

You’re welcome :)

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