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Anika [276]
2 years ago
10

X=1/16y^2 the directrix of the parabola is

Mathematics
1 answer:
yan [13]2 years ago
3 0
To solve this problem you must apply the proccedure shown below:

 1. You have the following equation of a parabola, given in the problem above:

 x<span>=1/16y^2

 2. Then, based on the graph attached, you have:

 p=y^2/4x
 p=8^2/(4)(4)
 p=64/16
 p=4

 3. The directrix is:

 directrix=h-p
 directrix=0-4
 directrix=-4

 The answer is:-4</span>

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If you multiply me by 7 add 1 and then divide by 4 you get 9 what number am I?
labwork [276]
Put the number as x and translate the English into math;
(7x+1)/4=9
Then solve for x
8x+1=36
8x=35
x=4.375 or 4 3/8
Hope this helps. 
3 0
3 years ago
Read 2 more answers
Write the equation of the line in fully simplified slope-intercept form.
fiasKO [112]

y = -\frac{1}{2}x - 1

Step-by-step explanation:

Let's pick two points on the line: P_1(-4, 1) and P_2(2, -2). Let's calculate the slope of this line using these points:

m = \dfrac{y_2 - y_1}{x_2 - x_1} = \dfrac{-2 - 1}{2 - (-4)} = -\dfrac{1}{2}

With this value of the slope, we can write the general slope-intercept form of the equation as

y = -\frac{1}{2}x + b

To solve for the y-intercept b, let's use either P1 or P2. I'm going to use P2:

-2 = -\frac{1}{2}(2) + b \Rightarrow b = -1

Therefore, the slope-intercept form of the equation is

y = -\frac{1}{2}x - 1

6 0
2 years ago
Mrs. Fowler has 28 students in her class, and 16 of them are boys.
Elan Coil [88]
We subtract 28 - 16 and get the number of girls 
so lets do that 
28 - 16 = 12 
now we know the unsimplified ratio os 12 to 16 
simplifed girls 12 ÷ 4 = 3 
simplified boys 16 ÷ 4 = 4 
since it says (girls to boys) we put girls first then boys
so it would become 3 : 4 
Or the answer is B.) 3 : 4 
5 0
3 years ago
Can you help me get the answer for this. Please respond as soon as possible.
S_A_V [24]

Answer:

yes what is it

Step-by-step explanation:

6 0
3 years ago
50 - 5 to the second power divided by 5
Llana [10]

Hey!

--------------------------------------------------

Steps To Solve:

50 - 5² ÷ 5

~Solve for exponent

50 - 25 ÷ 5

~Divide

50 - 5

~Subtract

45

--------------------------------------------------

Answer: \Large\boxed{\mathsf{45}}

--------------------------------------------------

Hope This Helped! Good Luck!

4 0
3 years ago
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