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2 years ago

Can you graph this equation - Y=3×^2

Mathematics

2 answers:

Vladimir [108]2 years ago

8 0

So you start at 0 then (1,3) , (2,12) and the other side would be (-1,3) , (-2,12)

lesya692 [45]2 years ago

7 0

Fill in the x values with easy numbers like -1, -2, 0, 1, 2.
After there figure out the y values.
Ex Y= (3*0)^2 ×=0, y=0
E× Y=(3*-1)^2 x= -1, y= 9

I think you can do the rest. If you are using division, use numbers that are divisible by the other number to make it easy.
Always use low numbers if possible, so you can graph.

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In preperation for an easter egg hunt, 4 blue eggs are filled for every 7 green. How many green eggs will be filled if 100 blue

ivann1987 [24]

Answer:

1. Typed question: 175 green eggs

2. Attached: 22 tables

Step-by-step explanation:

For the question you typed down, it is a ratio and proportion problem. You need to solve for the ratio proportional to the first ratio given.

4 blue eggs are filled for every 7 green. This means that the ratio between blue eggs and green eggs is 4:7.

Now yo need to figure out a ratio proportional to 4:7 if 100 blue eggs were filled. Below is how this is set up:

$\dfrac{4\;blue\;eggs}{7\;green\;eggs} = \dfrac{100\;blue\;eggs}{x\;green\;eggs}$

Now let's solve for x:

$\dfrac{4\;blue\;eggs}{7\;green\;eggs} = \dfrac{100\;blue\;eggs}{x\;green\;eggs}\\\\or\\\\\dfrac{4}{7}=\dfrac{100}{x}\\\\Cross-multiply\\\\4x = (7)(100)\\\\4x = 700\\\\Divide\;both\;sides\;by\;4\\\\\dfrac{4x}{4}=\dfrac{700}{4}\\\\x=175$

For your attached problem:

You have a total of 175 people, you need to figure out how many round tables you need if here are 8 chairs for each table You just need to divide the number of people by the number of chairs per table.

175 ÷ 8 = 21.9 tables

Now since you cannot have half a table, you round up to the nearest whole number. (we round up because you need to make sure that all of them are seated)

21.9 ≅ 22 tables.

8 0

3 years ago

Hello! My brother thinks that 5/6 times 3/5 is 15 on his homework, but he just wants to make sure. does anyone know that using c

Mamont248 [21]

Answer:

it is 5/6

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

If you add 15 to 3 times the mystery number you get 78 was the mystery number

andreyandreev [35.5K]

So the equation looks like this : 15*3x=78
subtract 15 from both sides: -15 -15
then divide by 3 from both sides
to isolate the variable: 3x=63
3/3x=63/3
x=21 (your mystery number is 21)

8 0

2 years ago

What is the determinant of the coefficient matrix of the system<br> –11<br> –2<br> 0<br> 55

Alina [70]

The first two rows of coefficients are identical, so by inspection, the determinant is 0.

7 0

3 years ago

Read 2 more answers

An animal reserve has 40,000 elk. The population increases 11% a year. How long tell the population is equal to 80,000. If someo

Natasha2012 [34]

Answer:

7 years (This answer is to the nearest year)

Step-by-step explanation:

The way you could work this out is by trial and error. 11 % a year means that its population increases by 4400 annually. 40,000 X 1.11^1 gives you the amount it would be after one year (44000). I got the 1.11 because of the percentage (0.11) plus the amount you need to do percentage increase (1). Then all you do is keep on going up till you hit the number you need (80,000) after about 7 years the total would have hit 80,000 and would have actually went past it (83046)

6 0

2 years ago