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Anastasy [175]
2 years ago
12

Please help me i need help quick

Mathematics
2 answers:
RoseWind [281]2 years ago
6 0

Answer:

<u>x = -2</u>

<u>y = -6</u>

Step-by-step explanation:

<u>Equating the equations</u> :

  • x - 4 = 4x + 2
  • 3x = -6
  • x = -2

  • y = -2 - 4
  • y = -6
Mama L [17]2 years ago
3 0
  • y=x-4
  • y=4x+2

Equate both

  • x-4=4x+2
  • -4-2=4x-x
  • -6=3x
  • x=-2

And

  • y=-2-4=-6

Graph attached

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the length of a rectangle is 5cm greater than the width. the area of the rectangle is 84cm squared. find the length and width
Ymorist [56]

Answer:

Therefore,

Length=12\ cm

Width= 7\ cm

Step-by-step explanation:

Let the Width of rectangle be 'x' cm.

Then the length of a rectangle will be (x + 5) cm.

Area of rectangle given is 84 cm squared.

To Find:

Length = (x+5) = ?

Width = x = ?

Solution:

We have area of rectangle given as

\textrm{Area of Rectangle}=Length\times Width

Substituting the given values we get

84=(x+5)x\\x^{2} +5x-84=0\\

On factorizing we get

x^{2} +12x-7x-84=0\\x(x+12)-7(x+12)=0\\(x+12)(x-7)=0\\(x+12)=0\ or\ (x-7)=0\\x=-12\ or\ x=7\\\therefore x =7\ cm\ \textrm{As x cannot be negative}

Therefore,

Length=x+5=7+5=12\ cm

Therefore,

Length=12\ cm

Width= 7\ cm

8 0
3 years ago
The Metropolitan Company sells its latest product at a unit price of $4. Variable costs are estimated to be 20% of the total rev
Neko [114]

Answer:

The company should sell at least 2,250 units to break even

Step-by-step explanation:

We need to calculate what is know as break-even point (BEP).

It can be calculated as

BEP=\frac{FC}{p-vc}

FC: fixed cost

p: price

vc: variable cost

The variable cost are expressed as 20% of the revenue, so it can be calculated that vc=0.2*p=0.2*4=0.8

Now we can calculate the BEP

BEP=\frac{FC}{p-vc}=\frac{7200}{4-0.8}=\frac{7200}{3.2}=   2,250\, units

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3 years ago
Please help ill give whoever answers the best the brainliest answer :)))
nataly862011 [7]

Answer:

4th option

Step-by-step explanation:

L = larger softball and S = smaller softball ,then

L + S = 80 → (1) ← equation based on number of softballs ordered

2.75L + 3.25S = 245 → (2) ← equation based on cost

subtract S from both sides in (1)

L = 80 - S → (3)

substitute L = 80 - S into (2)

2.75(80 - S) + 3.25S = 245 ← distribute parenthesis and simplify left side

220 - 2.75S + 3.25S = 245

220 + 0.5S = 245 ( subtract 220 from both sides )

0.5S = 25 ( divide both sides by 0.5 )

S = 50

substitute S = 50 into (3)

L = 80 - 50 = 30

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