All categories

3 years ago

1

1 answer:

3 0

C. The answers is 4:10 because she has 4 tetras for every 10 goldfish. It says a ratio of tetras to goldfish so tetras would be first. Meaning your answer is 4:10. ( you could simplify to 2:5 but that is not an answer option)

You might be interested in

<img src="https://tex.z-dn.net/?f=15%20%2B%205x%20%20%5C%5C%2014x%20-%206" id="TexFormula1" title="15 + 5x \\ 14x - 6" alt="15

olga_2 [115]

Reorder the terms:

6 + 14x = 15x

Solving

6 + 14x = 15x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-15x' to each side of the equation.

6 + 14x + -15x = 15x + -15x

Combine like terms: 14x + -15x = -1x

6 + -1x = 15x + -15x

Combine like terms: 15x + -15x = 0

6 + -1x = 0

Add '-6' to each side of the equation.

6 + -6 + -1x = 0 + -6

Combine like terms: 6 + -6 = 0

0 + -1x = 0 + -6

-1x = 0 + -6

Combine like terms: 0 + -6 = -6

-1x = -6

Divide each side by '-1'.

x = 6

Simplifying

x = 6

4 0

4 years ago

Solve for p if 2|p| = 4

Rina8888 [55]

P is equal to plus or minus 2 because it'll both be equal to 4

3 0

3 years ago

carol cut 2 1/2 inches off her hair three times last year. how much longer would her hair been if she had not cut it?

Ronch [10]

2.5 times three for the three years she didnt cut it would be 7.5 inches so in total her hair would have been 7 1/2 inches longer if she hadnt cut it.

8 0

3 years ago

Read 2 more answers

Help please I'm really not getting this for some reason

BartSMP [9]

The first given equation is:
x - 7y = -20
We can rewrite this equation as follows:
x = 7y - 20 ...........> equation I

The second given equation is:
-3x + 9y = 36 ..........> equation II

Substitute with equation I in equation II to get the value of the y as follows:
-3x + 9y = 36
-3(7y-20) + 9y = 36
-21y + 60 + 9y = 36
-12y = 36-60 = -24
y = (-24) / (-12) = 2

Now use the value of the y and substitute in equation I to get the value of the x as follows:
x = 7y - 20
x = 7(2) - 20 = 14 - 20 = -6

Based on the above calculations:
x = -6
y = 2

8 0

3 years ago

Read 2 more answers

What’s the element?

FromTheMoon [43]

Explanations and Steps:

How to find the elements:

*Take every element (either one capital letter OR two letters with the first capital and second lowercase)

*Reference the periodic table to find the element name

The number of reactants:

*Reactants are on the left side, what there is before the reaction

*Each reactant is separated by the + sign

*They may be more than one element

The number of products:

*Products are on the right side, what there is after the reaction

*Each product is separated with the + sign

*They may be more than one element

Is it balanced:

Count the number of each element on both sides. It is balanced if both sides have the same number of every element.

*Write out each of the element symbols for each side

*Remember the multiply subscripts (little numbers) by coefficients (big numbers)

Answers:

6.

The elements are:

H - hydrogen

Cl - chlorine

Ca - calcium

O - oxygen

# of reactants: 2

# of products: 2

Is it balanced?

Reactants:

H 4

Cl 2

Ca 1

O 2

Products:

H 2

Cl 2

Ca 1

O 1

It's not balanced because H and O have different numbers of atoms in the reactants and products.

7.

The elements are:

K - potassium

Cl - chlorine

O - oxygen

# of reactants: 1

# of products: 2

Is it balanced?

Reactants:

K 1

Cl 1

O 3

Products:

K 1

Cl 1

O 2

It's not balanced because there are three oxygen atoms for reactants but only two oxygen atoms in the product.

8.

The elements are:

K - potassium

P - phosphorus

O - oxygen

H - hydrogen

Cl - chlorine

# of reactants: 2

# of products: 2

Is it balanced?

Reactants:

K 3

P 1

O 4

H 1

Cl 1

Products:

K 3

P 1

O 4

H 3

Cl 3

It's not balanced because H and Cl have different numbers of atoms.

9.

The elements are:

S - sulphur

O - oxygen

# of reactants: 2

# of products: 1

Is it balanced?

Reactants:

S 2

O 6

Products:

S 2

O 6

It's balanced because both sides have 2 sulphur atoms and six oxygen atoms.

10.

The elements are:

K - potassium

I - iodine

Pb - lead

N - nitrogen

O - oxygen

# of reactants: 2

# of products: 2

Is it balanced?

Reactants:

K 2

I 2

Pb 1

N 2

O 6

Products:

K 1

I 2

Pb 1

N 1

O 3

It's not balanced because K, N and O have different numbers of atoms.

4 0

4 years ago