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alexandr402 [8]

3 years ago

15

Kevin is starting a saltwater aquarium with 36 fish. He wants to start with 11 times as many damselfish as clown fish. How many

of each fish will Kevin buy?

1 answer:

meriva3 years ago

3 0

33 damselfish, 3 clownfish

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Write a real world situation that can be modeled by the equation 8.35x=4.25x+36.90

tangare [24]

Sally purchased a TV from Rent-A-Center. She made her a down payment of $8.35x before she took her TV home. The down payment was the same amount as the payments she would continue to make monthly. Every month after that she made payments of $4.25x+36. Solve for x. (x=9, payments are $75.15)

6 0

3 years ago

What is the missing expression that would make the left-hand-side of the equation equal to the right-hand-side?

o-na [289]

Given:

The equation is

$\dfrac{???}{x-2}/\dfrac{x^2-1}{x^2-4x+4}=\dfrac{5(x-2)}{x-1}$

To find:

The missing value.

Solution:

Let the missing value be k.

$\dfrac{k}{x-2}/\dfrac{x^2-1}{x^2-4x+4}=\dfrac{5(x-2)}{x-1}$

$\dfrac{k}{x-2}\times \dfrac{x^2-2(x)(2)+2^2}{x^2-1^2}=\dfrac{5(x-2)}{x-1}$

Using the formulae $(a-b)^2=a^2-2ab+b^2$ and $(a-b)(a+b)=a^2-b^2$ .

$\dfrac{k}{x-2}\times \dfrac{(x-2)^2}{(x-1)(x+1)}=\dfrac{5(x-2)}{x-1}$

$\dfrac{k(x-2)}{(x-1)(x+1)}=\dfrac{5(x-2)}{x-1}$

Cancel out the common factors from both sides.

$\dfrac{k}{x+1}=5$

Multiply both sides by (x+1).

$k=5(x+1)$

Therefore, the missing value is 5(x+1).

5 0

4 years ago

What is the patterns of -3,6,-12 <br>And the rule?

Lynna [10]

Skip counting 3and rule is adding 3

8 0

4 years ago

How do I solve this ?

Nat2105 [25]

Answer:

Step-by-step explanation:

I'm just going to go out on a limb here and assume that those are a set of poorly made parenthesis. This, then, would be your equation:

$x+\frac{x}{7}+\frac{1}{11}(x+\frac{x}{7})=60$

The first thing to do is distribute through the parenthesis to get:

$x+\frac{x}{7}+\frac{x}{11}+\frac{x}{77}=60$

Next is to get rid of the denominators by multiplying by the LCM of 77:

$77(x+\frac{x}{7}+\frac{x}{11}+\frac{x}{77}=60)$ which gives you:

77x + 11x + 7x + x = 4620 and

96x = 4620 so

$x=\frac{385}{8}$

6 0

3 years ago

Melanie equally shares 25 meters of paper to create 9 banners

Dvinal [7]

Question: Which situation is represented by $\frac{25}{9}$ ?

Option A: Melanie equally shares 25 meters of paper to create 9 banners

Option B: Quill gives way 9 baseball cards from a pack of 25 cards.

Option C: George invites 25 kids and 9 adults to his birthday party.

Option D: Becca create 9 rows with 25 buttons.

Answer:

Solution:

Option A: Melanie equally shares 25 meters of paper to create 9 banners.

The fraction is $\frac{25}{9}$ .

Option B: Quill gives way 9 baseball cards from a pack of 25 cards.

The fraction is $\frac{9}{25}$

Option C: George invites 25 kids and 9 adults to his birthday party.

Here, 25 + 9.

Option D: Becca create 9 rows with 25 buttons.

Here, 9 × 25.

Hence the answer is Option A: Melanie equally shares 25 meters of paper to create 9 banners.

7 0

3 years ago