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AlekseyPX
3 years ago
15

Solve for x and y need help fast.

Mathematics
2 answers:
Kisachek [45]3 years ago
4 0

Answer:

(x, y) = (4, -8)

Step-by-step explanation:

2x - 2y = 24 $\Rightarrow$ 4x - 4y = 48

4x + 7y = -40

Subtracting the two equations from each other, we get:

(4x + 7y) - (4x - 4y) = -40 - 48

11y = -88

y = -8.

Then, 2x - 2*(-8) = 24. So, 2x + 16 = 24 $\Rightarrow$ 2x = 8$\Rightarrow$x = 4

jenyasd209 [6]3 years ago
4 0
X equals 4, Y equals negative 8
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Answer this with an explanation if you can
ludmilkaskok [199]
Since it takes 9 metres to make 24 bows, we know that it takes 9 divided by 24 metres to make a bow. That leaves us with the fraction 3/8,
We take that and multiply by the number of bows to create, which is 16,
that gives us an answer of 6m,
OPTION C,
Hope this helps ;)
6 0
3 years ago
PLEASE PLEASE HELP ME!! NEEDING HELP BADLY!
Allisa [31]

Each paper cup is a cone.
The volume if a cone is      (1/3) (pi) (radius)² (height)

Notice, in the picture they labeled the <em>diameter</em> of the cup = 8 cm.
But we need the<em> radius</em>. that's 1/2 of the diameter = 4 cm.

So, the volume of these paper cups is 

                                           (1/3) (pi) (4cm)² (11 cm) = about <em><u>184 cm³</u></em>
=====================

It says that tons of lemons have been sacrificed, and you have
about  37,850  cm³ of lemonade.

How many cups will that fill ?

       37,850 cm³ / 184 cm³ = about <em>205 cups</em>.
========================

How many packs of cups do you need to buy ?
Unfortunately, they only come in packs of 50.

1 pack = 50 cups . . . . . not enough
2 packs = 100 cups . . . not enough
3 packs = 150 cups . . . not enough
4 packs = 200 cups . . . oh so close but still not enough

You need to buy <em>5 packs = <u>250 cups</u></em>.
=================================

It started raining, so you only sold 80% of the lemonade that you had.

80% means 0.80
"of" means "times"

You started out with 37,850 cm³ .

You sold  (0.8) x (37,850 cm³) = about  <u>30,280 cm³</u> of it.

How many cups did you fill with that much lemonade ?
(Remember, each cup holds about <u>184 cm³</u>.)

         30,280 cm³ / 184 cm³ = about <u>164 cups sold</u>.

You bought 250 cups to start out.
You sold 164 cups of lemonade.

You had  (250 bought - 164 used) =

               <em>86 clean, unused paper cups, still in the wrappers, left over</em>.


8 0
3 years ago
Arrange from least to greatest.<br> 5/6 2/4 5/12
Jet001 [13]

Answer:

5/6=10/12. 2/4=6/12. 5/12

5/12. 2/4. 5/6

6 0
3 years ago
A function is shown in the table.
Ne4ueva [31]

Answer:

The function is increasing from x = 0 to x = 1.

Step-by-step explanation:

The value of g(0) is less than g(1), meaning g(x) increased from x=0 to x=1.

7 0
2 years ago
Simplify (3b^8 b^-2)^3
svet-max [94.6K]

Answer:

  27b^18

Step-by-step explanation:

The applicable rules of exponents are ...

  (ab)^c = (a^c)(b^c)

  (a^b)(a^c) = a^(b+c)

  (a^b)^c = a^(bc)

___

(3b^8·b^-2)^3 = (3b^(8-2))^3 = (3b^6)^3

  = 3^3·b^(6·3)

  = 27b^18

5 0
3 years ago
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