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3 years ago

Sample equation describe as yourself

Mathematics

2 answers:

zysi [14]3 years ago

7 0

Yeah I don’t see a equation

OverLord2011 [107]3 years ago

5 0

uhhh… where’s the equation? lol

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Which function is the inverse of f(x) = -5x -4

Licemer1 [7]

F^-1 (x)= -x/5 + 4/5 (Answer)

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3 years ago

the population of a particular city is given by the function p(t) = 72,300(1.03)t, where t is time in years and p(t) is the popu

allsm [11]

Current population :  72300
percentage growth rate:  3%
<span>after ten years :  97165</span>

5 0

3 years ago

Look at the triangle show on the right. The Pythagorean Theorem states that the sum of the squares of the legs of a right triang

Vladimir [108]

Answer:

$cos^2\theta + sin^2\theta = 1$

Step-by-step explanation:

Given

$(\frac{b}{r})^2 + (\frac{a}{r})^2$

Required

Use the expression to prove a trigonometry identity

The given expression is not complete until it is written as:

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = (\frac{r}{r})^2$

Going by the Pythagoras theorem, we can assume the following.

a = Opposite
b = Adjacent
r = Hypothenuse

So, we have:

$Sin\theta = \frac{a}{r}$

$Cos\theta = \frac{b}{r}$

Having said that:

The expression can be further simplified as:

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = 1$

Substitute values for sin and cos

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = 1$ becomes

$cos^2\theta + sin^2\theta = 1$

3 0

4 years ago

The sum of the digits of a two-digit number is 8. The difference between the number and the reversed number is 10 more than the

Vesna [10]

Answer:

The number is 62

Step-by-step explanation:

Let the digits of the number be T and U;

A 2 digit number is represented as: 10T + U

So,

$T + U = 8$

$10T + U - (10U + T) = 10 + 10U + T$

Required

Find the digit

Make U the subject in the first equation

$U = 8 - T$

Substitute 8 - T for U in the second

$10T + U - (10U + T) = 10 + 10U + T$

$10T + 8 - T - (10*(8-T) + T) = 10 + 10(8 - T) + T$

$10T + 8 - T - (80-10T + T) = 10 + 80 - 10T+ T$

$10T + 8 - T -80+10T - T = 10 + 80 - 10T+ T$

Collect Like Terms

$10T + 10T - T- T + 8 -80 = 10 + 80 - 10T+ T$

$18T -72 = 90 - 9T$

$9T + 18T = 90 + 72$

$27T = 162$

$T = 162/27$

$T = 6$

Recall that:

$U = 8 - T$

$U = 8 - 6$

$U = 2$

<em>Hence, the number is 62</em>

5 0

3 years ago

8p + 10p – p – 8p + 5 = 50

Lemur [1.5K]

The answer is p = 5.

Here are the steps I did.

1. Simplify 8p + 10p - p - 8p + 5 to 9p + 5 ( 9p + 5 = 50)

2. Subtract 5 from both sides ( 9p = 50 - 5)

3. Simplify 50 - 5 to 45 ( 9p = 45)

4. Divide both sides by 9 ( 45/9)

5. Simplify 45/9 to 5 ( p = 5)

7 0

3 years ago