Ask question

Ask question

All categories

3 years ago

10

Together, Dulcina and Hannah have 78 refrigerator magnets. Hannah has 2 times as many refrigerator magnets as Dulcina. How many

refrigerator magnets are in Hannah's collection? How many refrigerator magnets are in Dulcina's collection?

1 answer:

tester [92]3 years ago

4 0

Set up a system of equations

You might be interested in

HELP ASAP George plans to cover his circular pool for the upcoming winter season. The pool has a diameter of 20 feet and extends

enyata [817]

The pool has a diameter 20 ft so: r = 10 ft.
The pool cover extents 12 inches beyond the edge of the pool.
12 inches = 1 foot
Therefore, the radius of the pool cover is : r = 10 + 1 = 11 ft.
a. The area of the pool cover:
A = r² π = 11² π = 121 π ft²
b. The length of the rope:
l = 2 r π = 2 · 11 π = 22 π ft.

3 0

3 years ago

Plz Help me answer this question

zhuklara [117]

Answer:

617 ^ 15

Step-by-step explanation:

If the bases are the same when multiplying, add the exponents

617 ^ 9 * 617^6

617 ^(9+6)

617 ^ 15

5 0

3 years ago

Read 2 more answers

Graph f(x) = |x - 6| -4

LekaFEV [45]

Answer:

Step-by-step explanation:

Graph the parent function y = |x|. This graph has a v shape with vertex at (0, 0) and opens up.

Now translate the entire graph 6 units to the right. The vertex will now be at (6, 0).

Finally, translate this most recent graph 4 units down. The vertex will now be at (6, -4).

4 0

2 years ago

Solve the system 2x+4y=16 5x +3y=19 then find the value of y/x

AURORKA [14]

Answer:

I would change 2x+4y=24 into x=12–2y

To do that, divide both sides by 2 and then subtract 2y on each side.

After that, substitute for x. 3x+2y=19 would become 3(12–2y)+2y=19.

Then solve.

3(12–2y)+2y=19

36–6y+2y=19

-4y+36=19

-4y=-17

y=4.25

Then, substitute y in either equation.

Either this:

3x+2y=19

3x+2(4.25)=19

3x+8.5=19

3x=10.5

x=3.5

Or:

2x+4y=24

2x+4(4.25)=24

2x+17=24

2x=7

x=3.5

Or you could solve it in the equation you created in the beginning:

x=12–2y

x=12–2(4.25)

x=12–8.5

x=3.5

The coordinates where the lines intercept are (3.5, 4.25).

Sorry for the long answer!

4 0

3 years ago

How do u do percentage

lbvjy [14]

Answer:

Step-by-step explanation:

Ill try to break this down, simply:

When we talk about percentages we are talking about how much part of something we have and the percent sign is a just a symbol representing that.

Lets say we have 2 out of 10 apples and we need to convert this to a percentage

First think about how many apples we have in total... and that would be 10, and then how many apples we currently have being 2:

So if we put the part that we have over the whole thing we get:

$\frac{2}{10}$

So now lets turn this into a decimal, when its something over 10 its really easy, all we have to do is move the decimal back one place!

So we have 2 and if we move the decimal back one place we get .2 or 0.2

Now we have our decimal, to convert this into a percentage all we have to do is multiply our decimal by 100

So:

0.2 x 100 = 20%

All you do when you multiply by 100 is move the decimal back over 2 places one place for each zero so:

0.2 --> 2. --> 20.

Which gives us again 20%

3 0

3 years ago