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3 years ago

I need to graph a parabola. I need to find the vertex and a couple coordinates. y=-x^2+2x-4

Mathematics

1 answer:

PolarNik [594]3 years ago

6 0

Hello :
<span>y=-x²+2x-4
y = -(x²-2x)-4
y = - (x²-2x+1)+1-4
y = - (x-1)² -3
the vertex is : (1 , -3 )</span>

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los trabajadores de una mina se encuentran a 20 metros bajo tierra .Si excavan 3 metros desde alli suben otros 8 metros para cog

Yakvenalex [24]

Step-by-step explanation:

la carretilla estaba a unos 15 metros de altura

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2 years ago

The five members of the Traynor family each buy train tickets. During the train ride, each family member buys a boxed lunch for

larisa [96]

Let's assume

the price of each train ticket is x

we are given

total number of family members =5

so, total cost of ticket = total number of family members*the price of each ticket

so, total cost of ticket =5*x

so, total cost of ticket =5x

now, we have

each family member buys a boxed lunch for $6.50

so, total cost of lunch box = total number of family members*price of each lunch box

so, total cost of lunch box = 5*6.50

total cost of trip = total cost of ticket+total cost of lunch box

we are given

total cost of trip is $248.50

now, we can plug values

and we get

$248.50=5x+5*6.50$

now, we can solve for x

$248.50=5x+32.5$

$248.50-32.5=5x+32.5-32.5$

$216=5x$

$\frac{5x}{5} =\frac{216}{5}$

$x=43.2$

so,

the price of each train ticket is $43.2..........Answer

8 0

3 years ago

Read 2 more answers

A student said we cannot subtract 1.97 from 20 because one 1.97 has two decimal digits and 20 has none do you agree with this st

Pie

Answer: We can

Step-by-step explanation: 20.00

- 1.97

5 0

3 years ago

A dog walker charges a flat rate of $6 per walk plus an hourly rate of $30. How much does the dog walkercharge for a 45 minute w

leonid [27]

hello

from the question given, the dog walker charges a flat rate of $6 and an extra $30 per hour.

we can write out an equation in function notation

let the number of hours be represented by x

$f(x)=6+30x$

now we can proceed to solve the cost of the walk for 45 minutes

$\begin{gathered} 1hr=60\min s \\ \text{xhr}=45\min s \\ x=\frac{45}{60} \\ x=\frac{3}{4} \\ \text{therefore 45mins = 3/4 hours} \end{gathered}$

now we can input the value into the equation and know the cost for 45 minutes walk

$\begin{gathered} f(x)=6+30x \\ x=\frac{3}{4} \\ f(x)=6+30(\frac{3}{4}) \\ f(x)=6+22.5 \\ f(x)=28.5 \end{gathered}$

from the calculation above, the cost of 45 minutes walk will cost $28.5

6 0

1 year ago

Solve the equation for the indicated variable. Please help ASAP!!!!! :(<br> A=(730x)/(d^2) for x

zvonat [6]

First let's get rid of the $d^2$ in the denominator of the fraction on the right side of the equation. This will help to get only $x$ and a coefficient on one side of the equation:

$A = \dfrac{730x}{d^2}$

$d^2A = 730x$

Now, simply divide by 730 to find $x$ :

$d^2A = 730x$

$\boxed{\dfrac{d^2A}{730} = x}$

3 0

3 years ago