All categories

3 years ago

X+3y=28 when x =28 find the value for y plz help

Mathematics

1 answer:

Lisa [10]3 years ago

4 0

Answer:

y = 0

Step-by-step explanation:

Plug in 28 for x. Solve for the equation:

x + 3y = 28

(28) + 3y = 28

Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, subtract 28 from both sides:

28 (-28) + 3y = 28 (-28)

3y = 0

Isolate the variable, y. Divide 3 from both sides:

(3y)/3 = (0)/3

y = 0

y = 0 is your answer.

You might be interested in

Divide 1.20m in the ratio 2:3:4 what's the answer

Vikki [24]

2 :3 :4 gives 9 shares (2 + 3 + 4)

9 shares = 120cm
1 share = 120/9 cm = 13 1/3 cm ( or 13.333)

2 shares = 26 2/3 cm
3 shares = 40 cm
4 shares = 53 1/3 cm

3 0

3 years ago

Identify three pythagorean triples using the known triple 8, 15, 17. What does this mean?

ELEN [110]

Answer:

yes

Step-by-step explanation:

8² + 15² = 17²

64 + 225 = 289

289 = 289

8 0

2 years ago

Our club has 25 members, and wishes to pick a president, secretary, and treasurer. In how many ways can we choose the officers,

Rus_ich [418]

Answer:

13800

Step-by-step explanation:

The order of the members is important (because each selected member will receive a different position), thus we then need to use the definition of permutation.

There are 25 members, of which 3 are selected.

$\begin{array}{l}n=25 \\r=3\\end{array}$

Evaluate the definition of a combination:

$P(25,3)=\frac{25 !}{(25-3) !}=\frac{25 !}{22 !}=25 \cdot 24 \cdot 23=13800$

8 0

3 years ago

When preparing to buy a car, the first question you should ask yourself is... What do I need? What does the car look like? How s

dimulka [17.4K]

1. Money

2. Gray,Black

3. Get a truck not a car because if get a car and get in a car accident you will get hurt badly but with a truck not so bad

4. Your monthly payment depends on you and your dealership.

hope this helped

7 0

3 years ago

A coin contains 1.25 grams of nickel and 3.75 grams of copper, for a total weight of 5 grams. What percentage of the metal in th

otez555 [7]

So,

To find the percentage that the copper comprises, just divide the amount of copper by the total amount of metal in the coin. In this case, we will change the denominator so that it is 100, which can easily be converted into a percentage, which is really just a fraction out of 100.

$\frac{3.75}{5} = \frac{7.50}{10} = \frac{75}{100}$

75%

75% of the metal in the coin is copper.

7 0

3 years ago