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Fynjy0 [20]
3 years ago
13

Another one bites the dust, plz help i give brainliest :)

Mathematics
1 answer:
Leya [2.2K]3 years ago
8 0

Answer:

answer is 26.6%

Step-by-step explanation:

i first converted the fraction "40/150" to a decimal by dividing 40 by 150

40 divided by 150 is .26 (rounded)

and then i did .26 times 100

which gave me 26.6

:P hope this helped even doe im kinda late-

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The number of fish (f) in a fish tank increases when the number of algae blooms (a) decreases. Write the correct equation for th
Artyom0805 [142]

Answer:

  • f = -2/5a +14
  • 12.4 ≈ 12 fish for 4 algae blooms

Step-by-step explanation:

The 2-point form of the equation for a line is useful when you are given two points to work with:

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

The independent variable (x) is apparently "algae blooms" and is to be represented by "a". The dependent variable (y) is "number of fish" and is to be represented by "f". So, we have ...

  f = (4 -10)/(25 -10)(a -10) +10

  f = -6/15(a -10) +10

  f = -2/5a +14 . . . an equation for the scenario

Four a=4, the fish population is predicted to be ...

  f = -2/5(4) +14 = 12.4

There will be about 12 fish when there are 4 algae blooms.

6 0
3 years ago
Question 6(Multiple Choice Worth 1 points) (06.01 LC) Choose the correct classification of 5x + 2x2 − 8 by number of terms and b
Yakvenalex [24]

Question 7: Choose the correct simplification of the expression (3x − 6)(2x2 − 4x − 5)

Answer:

7. 6x³ - 12x² + 12x + 15

Step-by-step explanation:

(3x-6)(2x² - 4x - 5)

3x • 2x² = 6x³

3x • -4x = -12x²

3x • -5 = -15

-6 • 2x² = -12x²

-6 • -4x = 24x

-6 • -5 = 30

combine terms

6x³ - 12x² - 15 - 12x² + 24x + 30

combine like terms

6x³ - 24x² + 24x + 15

hope this helps :)

in the future, only ask one question per brainly submission. thanks!

7 0
3 years ago
12 bars of chocolate costs $3.00 . What is the cost of each chocolate bar? ​
andre [41]

Answer:

$0.25

Step-by-step explanation:

Divide the cost by the amount.

\frac{3}{12}=0.25

Therefore, the cost of each chocolate bar is $0.25.

7 0
2 years ago
Find the missing side lengths
sesenic [268]

Answer:

\sin(45)  =  \frac{o}{h}  \\ 0.7 =  \frac{x}{18 \sqrt{2} }  \\ 0.7 \times 18 \sqrt{2}  = x \\ 0.7 \times 25.45 = x \\ 17.8 = x

{x}^{2}  +  {y}^{2}  =( 18 \sqrt{2}  ) ^{2} \\  {17.8}^{2}  +  {y}^{2}  = 648 \\ 316.84 +  {y}^{2}  = 648 \\  {y}^{2}  = 648 - 316.84 \\  {y}^{2}  = 331.16 \\ y = 18.19

5 0
2 years ago
According to insurance records, a car with a certain protection system will be recovered 95% of the time. If 800 stolen cars are
Lapatulllka [165]

Answer: Mean = 760

Standard deviation = 6.16

Step-by-step explanation:

Given : The number of trials: n=800

The probability that  a certain protection system will be recovered :p=0.95

We know that the mean and standard deviation of binomial distribution is given by :_

\text{Mean}=np

\text{Standard deviation}=\sqrt{np(1-p)}, where n is the number of trials and p is the probability of success.

Now, the mean and standard deviation of the number of cars recovered after being stolen is given by :-

\text{Mean}=800\times0.95=760

\text{Standard deviation}=\sqrt{800\times0.95(1-0.95)}\\\\=6.164414002\approx6.16

Hence, the mean is 760 and standard deviation is 6.16 .

7 0
3 years ago
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