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frosja888 [35]
3 years ago
9

in an aquarium 2/5 of the fish are surgeonfish. of these three fourths are yellow tangs what fraction of all fish in the aquariu

m or yellow tangs
Mathematics
1 answer:
NikAS [45]3 years ago
5 0

Let the total number of fish in the aquarium be x .

And out of them, 2/5 are surgeonfish , that is

\frac{2x}{5}

And out of 2/5 surgeonfish , 3/4 are yellowtangs, that is

\frac{3}{4}* \frac{2x}{5} = \frac{6x}{20} = \frac{3x}{10}

Required fraction is

\frac{3x/10}{x} = \frac{3}{10}

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Plz help me what's number 4
kicyunya [14]
A digit that is equal to four ones added together, or two twos multiplied by each other, or eight divided by 2
7 0
4 years ago
A manager needs to buy chairs for his office. The price for one chair is$79.99. If the manager buys 2 or more chairs, he will re
goblinko [34]

Answer:

A. $32

Step-by-step explanation:

Normal price

1 chair cost = $79.99

2 chairs = $79.99 × 2

= $159.98

Discount price of 2 chairs

40% of $79.99

= 40/100 × 79.99

= 0.4 × 79.99

= 31.996

Approximately

$32

A. $32

7 0
3 years ago
Solve for x in terms of a, b, and c: ax − 3b = c
expeople1 [14]
Add 3b to both sides and divide by a to isolate x.
ax - 3b = c
ax = c + 3b
x = c +3b / a

Hope This Helps You!
Good Luck Studying :)
5 0
3 years ago
Read 2 more answers
Use the distributive property to rewrite 6(4-x)
Arlecino [84]

Answer:

24-6x

Step-by-step explanation:

To distribute, you multiply the number outside the parenthesis by each number inside, keeping in mind the signs.

So, 6(4-x) = 6(4) - 6(x) = 24-6x

8 0
4 years ago
Read 2 more answers
Please help me define the variables and write out each equation. TY!
juin [17]

Answer:

The equations are:

10x + 9y = 122

x + y       = 13

Step-by-step explanation:

Given Jose makes 10$ per hour washing cars and 9$ per hour walking dogs.

Also, it is given that he had worked for 13 hours total making 122$.

Let us assume the number of hours he spent on washing cars = 'x'.

Let us assume the number of hours he spent on walking dogs = 'y'.

Since, the total number of hours is 13, we can write:

x + y = 13           . . . eqn(1)

And since he has made 122$ in total, we will have:

10x + 9y = 122  . . .eqn(2)

'10x' represents the total money earned by washing cars and '9y' represents the total hours spent on walking dogs.

Hence, Eqn (1) and Eqn(2) is the answer.

Solving them will give: x = 5 and b = 8.

6 0
3 years ago
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