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3 years ago

Which pair of expressions are equivalent?

Mathematics

1 answer:

gladu [14]3 years ago

8 0

Don’t listen to the other person the answer is C.

x+x+x+x would be 4x. x^4 would be 4 times 4 times 4 times 4.

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Which of the following is the graph of y≥-5/2x+3

Fudgin [204]

Answer:

answer is 0

Step-by-step explanation:

You can do the equation Y 2x plus 3 on a graph. On this graph the Y would equal 5 and X would equal to 0.

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3 years ago

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A ladder 10 feet long rests against a vertical wall. Initially, the top of the ladder is 8 feet above the ground. If the top of

lora16 [44]

Step-by-step explanation:

Let vertical height of ladder from ground be y and

horizontal distance of the base of the ladder from the wall be x respectively.

Length of the ladder = l (constant) = 10 ft

Using Pythagoras theorem:

${l}^{2} = {y}^{2} + {x}^{2}$

Differentiate both sides w.r.t time

$0 = 2y \frac{dy}{dt} + 2x \frac{dx}{dt}$

$y \frac{dy}{dt} + x \frac{dx}{dt} = 0$

We know that (After 1 sec, y = 6 ft and x = 8 ft ; dy/dt = 2 ft/sec)

$6\times 2 + 8\frac{dx}{dt} = 0$

$\frac{dx}{dt} = - 1.5 ft \: per \: sec$

( Ignore - ive sign)

Therefore, bottom of the ladder is sliding away from the wall at a speed of 1.5 ft/sec one second after the ladder starts sliding.

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3 years ago

What is 22 + 5d = -8(7d-4)

ratelena [41]

22+5d=-8x7d=56d+ -8x-4=32

22+5d=-56d+32

22+32=54 and -56d+5d=-51d

The answer would be 51d+54

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3 years ago

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Evaluate the expression when B=7 c=-7. c-6b

Naya [18.7K]

Answer:

7 - (6 x 7) = -35

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Jenny put $3,000 into a new savings account.

skelet666 [1.2K]

I think it’s 5786788878

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3 years ago