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2 years ago

Plz guys help me plz

Mathematics

1 answer:

kari74 [83]2 years ago

4 0

Answer:

option d 11 .......substitute 2 inplace of x

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Which is equivalent to 256 3/4? A.4 B.12 C.64 D.192

posledela

If you were going to multiply those two numbers, the answer would be D, 192.

4 0

2 years ago

Read 2 more answers

Solve the system of equations. y=3x-1 and y=-2x+9. PLEASE SHOW WORK

kow [346]

Since both equations equal Y, set them equal to each other and solve.

3x -1 = -2x +9

Add 2x to each side:

5x - 1 = 9

Add 1 to each side:

5x = 10

Divide both sides by 5:

x = 10/5

x = 2

Now replace x with 2 and solve for y:

y = 3(2) -1 = 6-1 = 5

x = 2, y = 5 (2,5)

7 0

3 years ago

A parabola can be drawn given a focus of (-5, -4)(−5,−4) and a directrix of y=-6y=−6. Write the equation of the parabola in any

lord [1]

Answer:

$\displaystyle \large{y=\dfrac{x^2}{4} + \dfrac{5x}{2} + \dfrac{5}{4}}$

Step-by-step explanation:

Given:

Focus = (-5,-4)
Directrix = -6

To find:

Parabola Equation

Locus of Parabola (Upward/Downward)

$\displaystyle \large{\sqrt{(x-a)^2+(y-b)^2} = |y-c|}$

Where:

(a,b) = focus
c = directrix

Hence:

$\displaystyle \large{\sqrt{(x+5)^2+(y+4)^2}=|y+6|}$

Cancel square root by squaring both sides as we get:

$\displaystyle \large{(x+5)^2+(y+4)^2=(y+6)^2}$

Solve for y-term:

$\displaystyle \large{(x+5)^2=(y+6)^2-(y+4)^2}\\\displaystyle \large{x^2+10x+25=y^2+12y+36-y^2-8y-16}\\\displaystyle \large{x^2+10x+25=4y+20}\\\displaystyle \large{x^2+10x+5=4y}\\\displaystyle \large{y=\dfrac{x^2}{4} + \dfrac{5x}{2} + \dfrac{5}{4}}$

4 0

1 year ago

15 points urgent please help.

Dima020 [189]

Answer:

ima take a wild guess and say a and c is right (im d u m b so i d k)

Step-by-step explanation:

4 0

2 years ago

A) 9 B) 0 C) Undefined D) 6

Usimov [2.4K]

9 is the answer probably

5 0

2 years ago