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1 year ago

I need help! please is expression equivalent

Mathematics

1 answer:

nikitadnepr [17]1 year ago

6 0

No the value of functions are not same .

What is function in math?

A quantitative expression, rule, or law that describes the link between an independent variable and a dependent variable (the dependent variable).
In mathematics, functions occur widespread, and they are essential for defining physical links in the sciences.
A function is a type of rule that generates one output for a single output.
This is represented by the equation y=x2. Any inputs for x result in an output for y. Given that x is the input value, we would state that y is a result of x.

- 5 × ( -5)⁻⁹ = -5 × 1/-5⁹ ⇒ 1/5⁸ = 1/390625

[ -5 × (-5)]⁻⁹ = [25]⁻⁹ = 1/25⁹ = 1/3814697265625

No the value of functions are not same .

Learn more about function

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A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks along the x-axis from the spotlight toward the bui

Sedbober [7]

Answer:

0.675 m/s

Step-by-step explanation:

Let height of shadow= y,CD=x

Height of man=2 m

Speed of man= $\frac{dx}{dt}=1. 8 m/s$

$\triangle ABD\sim\triangle ECD$

Therefore, $\frac{AB}{EC}=\frac{BD}{CD}$

$\frac{y}{2}=\frac{12}{x}$

$xy=24$

Differentiate w.r.t t

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

$x\frac{dy}{dt}=-y\frac{dx}{dt}$

$\frac{dy}{dt}=-\frac{y}{x}\frac{dx}{dt}$

When the man is 4 m from the building

Then, we have x=12-4=8 m

$\frac{dx}{dt}=1.8 m/s$

Substitute the values in above equation then, we get

$8y=24$

$y=\frac{24}{8}=3$

Substitute the values then we get

$\frac{dy}{dt}=-\frac{3}{8}\times 1.8=-0.675 m/s$

Hence, the length of his shadow on the building decreasing at the rate 0.675 m/s.

8 0

3 years ago

HELP WITH MY MATH QUIZ!!!!!!

Stella [2.4K]

Answer: answer is b.58

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

PLEASE ITS MY LAST QUESTION

Serjik [45]

Answer:

$y = - \frac{1}{4} x - 10$

Step-by-step explanation:

The negative reciprocal of 4 is -1/4.

Let's substitute in our values, to find the y-intercept:

$y = - \frac{1}{4} x + c$

$- 11 = - 1 + c$

$c = - 10$

Finally, our full equation is:

$y = - \frac{1}{4} x - 10$

4 0

1 year ago

In the figure below, m∠ABC = 57 degrees and m∠DAB =116 degrees. What is m∠ABC?

Allushta [10]

Answer:

∠ACB = 59°

Step-by-step explanation:

∠BAC = 180 - 116 = 64°

∠ACB = 180 - 64 - 57 = 59°

3 0

2 years ago

This morning Allen had 2 more action figures than Barbara, and Barbara had 8 more action figures than Charlie. Allen have some o

Zina [86]

The value of N is 5.

Let x represent the number of action figures Allen has.

Let y represent the number of action figures Barbara has.

Let z represent the number of action figures Charlie has.

<h3 /><h3>Generating the equations</h3>

Given that this morning Allen had 2 more action figures than Barbara, we have that x = y + 2 (1)

Also, Barbara had 8 more action figures than Charlie, we have that y = z + 8 (2)

Now, Allen have some of his action figures to Charlie, and now both Allen and Charlie have the same number of action figures.

Let p be the number of action figures Allen gave to charlie. So, Allen now has x - p action figures and Charlie now has z + p

Since now, both Allen and Charlie have the same number of action figures, we have that

x - p = z + p (3)

Barbara now has N more action figures than Charlie does.

So, y + N = z + p + 8 (4)

<h2 /><h2>Solving the equations</h2>

Substituting (2) into (1), we have

x = y + 2

= z + 8 + 2

= z + 10

x = z + 10 (5)

<h3>The value of p</h3>

Substituting (5) into (3), we have

x - p = z + p

z + 10 - p = z + p

10 - p = p

10 = 2p

p = 10/2

p = 5

<h3 /><h3>The value of N</h3>

Substituting (2) into (4), we have

y + N = z + p + 8

z + 8 + N = z + p + 8

N = p

Since p = 5, N = 5

So, the value of N is 5.

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4 0

2 years ago