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3 years ago

Write the formula for

Mathematics

1 answer:

Afina-wow [57]3 years ago

7 0

Answer:

Equation of the parabola x² = -12.56 y

Step-by-step explanation:

Explanation:-

Given Y- intercept ( 0, -3.14)

Given Focus is ( 0 , -a) = ( 0, -3.14)

So a = 3.14 center C(0,0)

The graph of the parabola is downwards and the axis of the parabola is Y-axis.

Equation of the standard parabola x² = -4 a y

x² = -4 (3.14) y

x² = - 12.56 y

Conclusion:-

Equation of the parabola x² = -12.56 y

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Solve. 489.209 + 43.9

lidiya [134]

Answer:

533.109

Step-by-step explanation:

Just add all the numbers

8 0

3 years ago

Milk is delivered to a chain of regional supermarkets once a week. If the weekly volume of sales in thousands of gallons is a ra

sleet_krkn [62]

Answer:

The chain of supermarkets must order 428.1 gallons of milk.

Step-by-step explanation:

Let's define the random variable X.

X : ''Weekly volume of sales in thousands of gallons''

X is a continuous random variable.

The probability density function for X is

$f(x)=7(1-x)^{6}$ when 0 < x < 1

$f(x)=0$ Otherwise.

Let's denote as ''a'' to the quantity of milk for the question.

We are looking for :

$P(X>a)=0.02$

$P(X>a)=\int\limits^1_a {f(x)} \, dx$

$P(X>a)=\int\limits^1_a {7(1-x)^{6}} \, dx$

$P(X>a)=(1-a)^{7}$

$(1-a)^{7}=0.02$

$a=1-\sqrt[7]{0.02}$

$a=0.4281$

a is in thousands of gallons, therefore the chain of supermarkets must order

428.1 gallons of milk in order to satisfy the question.

7 0

3 years ago

I have no idea!!! Help??

Savatey [412]

Answer:

x<5

Open circle at 5 going to the left

x >1

Open circle at 1 going to the right

Step-by-step explanation:

7x -19 < 16

Add 19 to each side

7x -19 +19< 16+19

7x< 35

Divide by 7

7x/7 < 35/7

x<5

Open circle at 5 going to the left

9+3x>12

Subtract 9 from each side

9-9 +3x >12-9

3x >3

3x/3 >3/3

x >1

Open circle at 1 going to the right

3 0

3 years ago

If f(x)= 4x+3 and g(x)= 3x evalute f(x). g(x) for x=-1 over 2

padilas [110]

$\bf \begin{cases}
f(x)=4x+3\\
g(x)=3x\\
------------\\
f(x)\cdot g(x)=(4x+3)(3x)\\
\qquad \qquad \qquad 12x^2+9x
\end{cases}
\\\\\\
\boxed{x=-\cfrac{1}{2}}\qquad \qquad 12\left( -\frac{1}{2} \right)^2+9\left( -\frac{1}{2} \right)\implies 12\left( -\frac{1}{2} \right)\left( -\frac{1}{2} \right)+9\left( -\frac{1}{2} \right)
\\\\\\
12\left( \cfrac{1}{4} \right)-\cfrac{9}{2}\implies 3-\cfrac{9}{2}\implies \cfrac{6-9}{2}\implies \cfrac{-3}{2}\implies -1\frac{1}{2}$

6 0

3 years ago

Choose the equation that combines with the following equation to create a system of linear equations with infinitely many soluti

Deffense [45]

D. 11x = 5y - 6

Because for there to be infinitely many solutions it has to be the same line & choice D is the same as the original equation except both sides of the equation were multiplied by 3.

6 0

4 years ago