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3 years ago

What’s equivalent to x^-2

Mathematics

1 answer:

lesantik [10]3 years ago

5 0

1/x^2. Remember that any number raised to a negative power is the reciprocal.

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4 divide by 2 and add 1 Input Output 0 2 -8 100

alexandr402 [8]

Answer:

Step-by-step explanation:

Given:

4 Divide by 2 and add 1

Computation;

[4 / 2] + 1

Using BODMAS rule

⇒ [4 / 2] + 1

⇒ 2 + 1

5 0

3 years ago

The measure of angle θ is 7pi/4 . The measure of its reference angle is *Blank* °, and tan θ is *blank*

sukhopar [10]

Since the measure of angle $\Theta$ is $\frac{7\Pi }{4}$

The measure of its reference angle = $\frac{7\times 180^{\circ}}{4}$

= $=315^{\circ}$

Now we have to compute the value of $\tan \Theta$

$\tan \Theta = \tan \frac{7\Pi }{4}$

$= \tan (2\Pi -\frac{\Pi }{4})$

The value of ( $(2\Pi -\frac{\Pi }{4})$ ) lies in the fourth quadrant. In fourth quadrant, the value of tan is always negative.

So, $\tan (2\Pi -\frac{\Pi }{4})$

$= -\tan (\frac{\Pi }{4})$

= -1.

5 0

3 years ago

Answer the Volume Based Question. I will make uh Brainliest + 50 points

Olin [163]

Step-by-step explanation:

(i) For cuboid shaped container:

$l = 3a\: cm,\: b = 3a\:cm,\: h = x\:cm$ (Given)

Container is filled with water so the volume of water can be given by the following formula:

$V_{water} = lbh$

Plugging the values of l, b and h in the above formula, we find:

$V_{water} = (3a)(3a)(x)$

$\huge{\red{\boxed{V_{water} = 9a^2x\:cm^3}}}$

(ii) For solid right circular cylinder:

radius (r) = a cm, h = a cm

Formula for volume of cylinder is given as:

$V_{cylinder} =\pi r^2 h$

$V_{cylinder} =\pi (a)^2 (a)$

$\huge{\purple{\boxed{V_{cylinder} =\pi a^3 \:cm^3}}}$

4 0

2 years ago

40 Points pls help !!!!

Vladimir79 [104]

b is write answers click it

3 0

2 years ago

The annual birth rate for a population of a given country is represented by the function y= 918397(0.9763)^t where “t” represent

viktelen [127]

Answer:

The initial number of annual births in 2018 is 918,397

The percent decrease in birth rates is 2.37%

The expected number of births in 2021 is 834,379

Step-by-step explanation:

Exponential Decay Function

The exponential function is frequently used to model natural decaying processes, where the change is proportional to the actual quantity.

An exponential decaying function is expressed as:

$C(t)=C_o\cdot(1-r)^t$

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

We are given the function that models the annual birth rate for a population of a given country:

$y= 918,397(0.9763)^t$

Where t represents the number of years since 2018.

a.) We can identify the variables with the actual model by comparing with the general equation, thus: Co=918,397 and 1-r=0.9763.

Solving for r we have r=1-0.9763=0.0237.

This means the initial number of annual births in 2018 (t=0) is 918,397

b.) The percent decrease in birth rates is r=0.0237 = 2.37%

c.) To find the expected number of births in 2021 (t=4 years), we substitute the value of t in the equation of the model:

$y= 918,397(0.9763)^4$

Calculating:

y = 834,379

The expected number of births in 2021 is 834,379

5 0

3 years ago