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algol [13]
3 years ago
6

Find e and d3e+d=8 2e+d=8​

Mathematics
2 answers:
Westkost [7]3 years ago
7 0

Answer:

Step-by-step explanation:

son4ous [18]3 years ago
5 0
3e+d=8
2e+d=8
Multiply the second equation by -1
You get
-3e-d=-8
Use eliminating methods
-3e-d=-8
2e+d=8
We get
-e=0
So e=0
Find e by substitute it in one of the equation
2*0+d=8
D
d=8
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Find the equation of the parabola with its focus at (5,0) and it’s directrix y=2
Verizon [17]

Answer:

Option A

Step-by-step explanation:

From the question given in the picture attached,

Directrix of the parabola → y = 2

Focus of the parabola → (-5, 0)

Since, focus is below the directrix, parabola will open open downwards.

Equation of the parabola will be in the form of,

y - k = -4p(x - h)²

Here, (h, k) is the vertex of the parabola

p = Distance between vertex and focus or distance between vertex and directrix

Since, distance between vertex and focus = Distance between vertex and directrix

Therefore, vertex of the parabola → (-5, 1)

Now distance (p) between vertex (-5, 0) and focus (-5, 1) = 1 unit

By substituting these values in the equation,

y - 1 = -4(1)[x - (-5)]²

y - 1 = -4(x + 5)²

y = -4(x + 5)² + 1

Option A will be the answer.

3 0
3 years ago
Which explanation correctly solves this problem?
Oxana [17]
The answer is B.
Start with 11.5. Multiply 1.5 by 2. Add this product to 11.5. Then add 3.25 and 6 to the answer.
6 0
3 years ago
Read 2 more answers
Consider the functions p and q.
xz_007 [3.2K]

Answer:

q= -1x

coordinates of p are .5, 2

Step-by-step explanation:

I apologize if I'm wrong love

6 0
2 years ago
(a) (4,4) is a point on a locus whose equation is y2 = kx. Show that (16,8) is another point on the locus.
Vlad [161]

Step-by-step explanation:

plug the coordinate points into the equations and solve for the remaining variable.

b) (2,3) - 5(2) + b(3) = 16

10 + 3b = 16. 3b= 6. b = 2

(0,8) - 5(0) + 2(8) = 16. 0+ 16 = 16. ☆

a) (4,4) assume based on results you meant y squared. (y^2)

(4)^2 = 4k. 16 = 4k. k = 4

(8)^2 = 4(16). 64 = 64. ☆

6 0
3 years ago
Read 2 more answers
The Cinemania theater showed 108 different movies last year. Of those, 15 movies were action movies. Based on this data, what is
Ugo [173]

Answer:

A reasonable estimate of the probability is equal to 0.1389   or  13.89\%

Step-by-step explanation:

we know that

The probability of an event is the ratio of the size of the event space to the size of the sample space.  

The size of the sample space is the total number of possible outcomes  

The event space is the number of outcomes in the event you are interested in.  

so  

Let

x------> size of the event space

y-----> size of the sample space  

so

P=\frac{x}{y}

In this problem we have

x=15

y=108

substitute

P=\frac{15}{108}=0.1389

Convert to percentage

0.1389*100=13.89\%

3 0
3 years ago
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