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3 years ago

CAN YOU PLEASE HELP ME!!!!!!!!

Mathematics

2 answers:

gulaghasi [49]3 years ago

8 0

Answer:

try desmos!

Step-by-step explanation:

put it into the desmos graphing calculator

timofeeve [1]3 years ago

4 0

Answer:

Step-by-step explanation:

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Calculate the area of the triangle

Artemon [7]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A pond has 150 fish and the population decreases by 8% each day. How many days before there are 30 fish

nlexa [21]

Answer:

19 days

Step-by-step explanation:

Given

$a = 150$ --- initial

$r = 8\%$ -- rate

Required

Days when the fish gets to 30

The function is exponential and as such it follows;

$y = ab^x$

Where x represents the number of days and y the number of fishes

Because the fishes decreases;

$b = 1 - r$

So, we have:

$b = 1 - 8\%$

Express as decimal

$b = 1 - 0.08$

$b = 0.92$

In $y = ab^x$

$a =150$

$y = 30$

$b = 0.92$

So, we have:

$30 = 150 * 0.92^x$

Divide both sides by 150

$0.2 = 0.92^x$

Take log of both sides

$log(0.2) = log(0.92^x)$

Apply law of logarithm

$log(0.2) = x\ log(0.92)$

Make x the subject

$x = \frac{log(0.2)}{log(0.92)}$

$x = \frac{-0.6990}{-0.0362}$

$x = 19.309$

$x \approx 19$

<em>Hence, it takes approximately 19 days</em>

3 0

3 years ago

Which equation represents a proportional relationship? A) y = 3x 4 B) y = 3 4x C) y = 3x 4 + 1 D) y = 3 4x + 1

lesantik [10]

Answer:

A. y = 3x/4

Step-by-step explanation:

a proportional relationship between x and y is a straight line passing through the origin (0, 0).

The equation must be in the form y = kx.

y = 3x/4

y = 3/4x

8 0

4 years ago

A boat that costs $8550 decreases in value by 12% per year. How much will the boat be worth after 3 years?

erastovalidia [21]

You have to take $8,550 times 0.12 (12%) to find out the number it is being decreased by.
8,550 x 0.12 = 1,026
And then, you have to subtract 1,026 from 8,550 three times for three years and your answer becomes 5,472.
$5,472

3 0

3 years ago

Carpenter A charges $50 an hour. Carpenter B charges $20 to visit your home plus $45 for each hour. For how many hours will the

umka2103 [35]

Answer:

4 hours to pay the same amount

and aif you want a 3 hours work you should get carpenter A

Step-by-step explanation:

$50x = 20 + 45x \\ 5x = 20 \\ x = 4hours \\$

carpenter A for 3 hours:

$50 \times 3 = 150dollars \\$

carpenter B for 3 hours:

$20 + 45 \times 3 = 155dollars$

8 0

3 years ago