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3 years ago

HELPPPPPPPPPPPPPP!!!!! Please i WILL MAKE U BRAINLY

Mathematics

1 answer:

dusya [7]3 years ago

6 0

i did this before so have fun on your future work :D

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Solve for x <br><br> (3x+5)+(4x+1)

DENIUS [597]

X=12

7X+6=90

7X=84

X=12

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4 years ago

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D. the number of dogs in the shelter compared to the number of cats in the shelter.

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3 years ago

How much sparkling water would you need to make 100 quarts of sparkling grape juice? (Recipe for sparkling grape juice calls for

kakasveta [241]

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66.6666

Step-by-step explanation:

8 0

3 years ago

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Given f(x)=10-2^x, find f(7)

xenn [34]

F(7) = 10 - 2^7
f(7) = 10 - 128
f(7) = -118

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4 years ago

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Find the equilibrium quantity and equilibrium price for the commodity whose supply and demand functions are given.

expeople1 [14]

Rewriting the two equations:

[Supply] $p = q^2+20$
[Demand] $p=-4q^2+10q+18600$

Equilibrium price is when
Supply = Demand
$q^2+20 = -4q^2+10q+18600$
$q^2+4q^2+20-10q-18600 = 0$
$5q^2-10q-18580=0$ ⇒ Simplifying the equation by dividing each term by 5

$q^2-2q-3716=0$

The simplified equation is in quadratic form.
There are three main methods for solving a quadratic equation: factorizing, completing the square, or quadratic formula.

Using the formula, we need the value of a, b, and c which is the constant of the quadratic equation.
$q_1= \frac{-b+ \sqrt{(b)^2-4ac)} }{2a}$ , and $q_2= \frac{-b- \sqrt{(b)^2-4ac)} }{2a}$

We have a = 1, b = -2, and c = -3716
Substituting these values into the formula we have
$q_1= \frac{-(-2)+ \sqrt{(-2)^2-4(1*-3716)} }{2} =61.97$
$q_2= \frac{-(-2)- \sqrt{(-2)^2-4(1*-3716)} }{2} =-59.97$

Since 'q' represents a quantity, we can't have negative values, so we choose the value of 'q' to be 61.97 ≈ 62 (rounded to the nearest whole number)

Answer: Equilibrium quantity = 62

4 0

3 years ago