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AlexFokin [52]
3 years ago
11

The variable x represents the number of angelfish Carlos bought and the variable y represents the number of parrotfish he bought

.
Carlos bought 405 tropical fish for a museum display. He bought 8 times as many parrotfish as angelfish.

How many of each type of fish did he buy
Mathematics
1 answer:
expeople1 [14]3 years ago
6 0
If you would like to know how many of each type of fish did Carlos buy, you can calculate this using the following steps:

x ... the number of angelfish
y ... the number of parrotfish
405 tropical fish bought
8 times as many parrotfish as angelfish ... 8 * y = x

405 = x + y
405 = 8 * y + y
405 = 9 * y
y = 405 / 9
y = 45 parrotfish

x = 8 * y = 8 * 45 = 360 angelfish

The correct result would be 45 parrotfish and 360 angelfish.
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Which comparison is correct?
r-ruslan [8.4K]

Option B: $4.5 \times 10^{-6}>3.9 \times 10^{-9}$ is the correct answer.

Explanation:

Option A: $7.1 \times 10^{8}>1.2 \times 10^{9}$

Simplifying, we get,

710000000>1200000000

Since, the value of $1.2 \times 10^{9}$ is greater than $7.1 \times 10^{8}$, the comparison $7.1 \times 10^{8}>1.2 \times 10^{9}$ is false.

Hence, Option A is not the correct answer.

Option B: $4.5 \times 10^{-6}>3.9 \times 10^{-9}$

Simplifying, we get,

0.0000045>0.0000000039

Since, the value of $4.5 \times 10^{-6}$ is greater than $3.9 \times 10^{-9}$, the comparison $4.5 \times 10^{-6}>3.9 \times 10^{-9}$ is true.

Hence, Option B is the correct answer.

Option C: $2.4 \times 10^{-5}

Simplifying, we get,

0.000024

Since, the value of $2.4 \times 10^{-5}$ is greater than $5.7 \times 10^{-6}$, the comparison $2.4 \times 10^{-5} is false.

Hence, Option C is not the correct answer.

Option D: $8.2 \times 10^{-4}

Simplifying, we get,

0.00082

Since, the value of $8.2 \times 10^{-4}$ is greater than $3.6 \times 10^{-6}$, the comparison $8.2 \times 10^{-4} is false.

Hence, Option D is not the correct answer.

6 0
3 years ago
Which is a true statement? A. -15 > -5 B. -4 > 0 C. -12 < -3 D. 2 < -5
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The true statement is C -12 < -3
6 0
4 years ago
Read 2 more answers
Whats 48/200 simplest form
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3 years ago
Write the equation of the line that passes through (5, 6) and (8, 4) in slope-intercept form.
gavmur [86]

Answer:

Step-by-step explanation:

<h3>Equation of the line in slope- intercept form:</h3>

       \sf \boxed{\bf y = mx +b}

Here, m is the slope and b is the y-intercept

  Find the slope with the given two points.

   \sf \boxed{slope = \dfrac{y_2-y_1}{x_2-x_1}}

             \sf =\dfrac{4-6}{8-5}\\\\=\dfrac{-2}{3}

Slope = -2/3 and choose any one the given points.

Substitute m = -2/3  and (5,6)  in the above equation and find 'b'

      \sf 6 =\dfrac{-2}{3}*5+b\\\\6 =\dfrac{-10}{3}+b\\\\6+\dfrac{10}{3}=b\\\\\dfrac{6*3}{1*3}+\dfrac{10}{3}=b\\\\\dfrac{18}{3}+\dfrac{10}{3}=b\\\\\boxed{b=\dfrac{28}{3}}

Equation of the line:

            y = \dfrac{-2}{3}x + \dfrac{28}{3}

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Answer:

22 to the 5th power

Step-by-step explanation:

Oh and also these are some of the kid's names:

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