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harkovskaia [24]
3 years ago
6

Write the equation of the parabola given: Focus: (2,-9) Directrix: y=1

Mathematics
1 answer:
stellarik [79]3 years ago
8 0
So the vertex, exactly between the focus and directrix, must be at <span>(h, k) = (1, 
–2)</span><span>.</span>
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PLEASE HELPPPPPPPPPPPPPPPPPPPPP
astra-53 [7]

Answer:

348

Step-by-step explanation:

Length-l

Width-w  

Height-h

A=2(wl+hl+hw)=2·(8·9+6·9+6·8)=348

3 0
3 years ago
Suppose Sally has $28.00 in her bank account and starts saving $18.25 every week. Her friend Suzy has $161.00 in her bank accoun
Elza [17]

a.

Sally has $28.00 in her bank account and starts saving $18.25 every week.

Let x represent the number of weeks from when he have $28.00 in her account.

and y represent the amount in her account at week x;

We can write the function of the case as;

y=mx+b

where m is the amount she saves every week, and b the initial amount in her account.

\begin{gathered} m=\text{ \$18.25} \\ b=\text{ \$28.00} \end{gathered}

So, the function will be;

y=18.25x+28

b.

Her friend Suzy has $161.00 in her bank account and is withdrawing $15 every week.​

Using the same rule as in a above;

\begin{gathered} m=-15\text{ (withdrawing is negative)} \\ b=161 \end{gathered}

The function will be;

y=-15x+161

c.

The graph of the two functions is shown below;

d.

The point where the two lines intersect is shown in the graph above.

The point is at;

(4,101)

Which is at week 4 and balance $101.

e.

The point at which they intersect is the point where they both have the same values.

It is the week when both Sally and Suzy have the same amount in there account.

So, at the fourth week (week 4) Sally and Suzy both have $101 in their account

3 0
1 year ago
Ghsdgsadhgdhasdhbhdsdhb
kolbaska11 [484]
Cgagcadhfhfjooguo! duolujto
7 0
3 years ago
Hcf and LCM of 391 and 236
mash [69]

Answer:

LCM = 92276

HCF = 1

Step-by-step explanation:

5 0
1 year ago
x^2+1/2x+1/16=4/9 Factor the perfect-square trinomial on the left side of the equation. (x + )² = 4/9
Nezavi [6.7K]
The missing number is the square-root of the constant term on the left-hand-side, which equals sqrt(1/16)=1/sqrt(16)=1/4.
Check:
(x+1/4)^2=x^2+2*(1/4)x+(1/4)^2=x^2+x/2+1/16.   ok

Answer: x= 1/4
5 0
3 years ago
Read 2 more answers
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