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3 years ago

11

please answer every question correctly and quickly will give you a brainless crown if you answer correctly

1 answer:

kondaur [170]3 years ago

6 0

Answer:

I know the answer .

Step-by-step explanation:

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Which of the following lines is parallel to x = 4?

sladkih [1.3K]

we know that

The line $x=4$ is parallel to the y-axis and is perpendicular to the x-axis

therefore

The line $x=2$ is parallel to the line $x=4$ , because is parallel to the y-axis and is perpendicular to the x-axis too

using a graphing tool

see the attached figure

<u>the answer is</u>

$x=2$

5 0

3 years ago

Read 2 more answers

Two numbers are in the ratio of 2 to 3 if the smaller number is 18 the lager number is ___ 21 27 36 54

PolarNik [594]

Set it up like this
2/3 = 18/x
2x = 54 - Cross-multiply
x = 27

6 0

4 years ago

Match the equations representing parabolas with their directrixes. y + 8 = 3(x + 2)2 y − 14 = -(x − 3)2 y + 7.5 = 2(x + 2.5)2 y

Shkiper50 [21]

Answer:

Part 1) $y+8=3(x+2)^{2}$ -----> $y=-8.08$

Part 2) $y-14=-(x-3)^{2}$ ----> $y=14.25$

Part 3) $y+7.5=2(x+2.5)^{2}$ ----> $y=-7.625$

Part 4) $y-17=-(x-3)^{2}$ -----> $y=17.25$

Part 5) $y+7=(x-4)^{2}$ ----> $y=-7.25$

Part 6) $y-6=-(x-1)^{2}$ ----> $y=6.25$

Step-by-step explanation:

we know that

The equation of a vertical parabola in vertex form is equal to

$y-k=\frac{1}{4p}(x-h)^{2}$

where

(h,k) is the vertex

The directrix is

$y=k-p$

case 1) we have

$y+8=3(x+2)^{2}$

the vertex is the point (-2,-8)

$\frac{1}{4p}=3$

$p=\frac{1}{12}$

The directrix is equal to

$y=-8-\frac{1}{12}=-8.08$

case 2) we have

$y-14=-(x-3)^{2}$

the vertex is the point (3,14)

$\frac{1}{4p}=-1$

$p=-\frac{1}{4}$

The directrix is equal to

$y=14+\frac{1}{4}=14.25$

case 3) we have

$y+7.5=2(x+2.5)^{2}$

the vertex is the point (-2.5,-7.5)

$\frac{1}{4p}=2$

$p=\frac{1}{8}$

The directrix is equal to

$y=-7.5-\frac{1}{8}=-7.625$

case 4) we have

$y-17=-(x-3)^{2}$

the vertex is the point (3,17)

$\frac{1}{4p}=-1$

$p=-\frac{1}{4}$

The directrix is equal to

$y=17+\frac{1}{4}=17.25$

case 5) we have

$y+7=(x-4)^{2}$

the vertex is the point (4,-7)

$\frac{1}{4p}=1$

$p=\frac{1}{4}$

The directrix is equal to

$y=-7-\frac{1}{4}=-7.25$

case 6) we have

$y-6=-(x-1)^{2}$

the vertex is the point (1,6)

$\frac{1}{4p}=-1$

$p=-\frac{1}{4}$

The directrix is equal to

$y=6+\frac{1}{4}=6.25$

5 0

3 years ago

1. What is the measure of A) 50°<br> B) 70°<br> C) 80°<br> D) 160°<br> E) 180°

ioda

Answer:

A 50

Step-by-step explanation:

According to the Inscribed Quadrilateral Theorem, opposite angles must be supplementary. With this, we can state that:

3 0

3 years ago

36 is what percent of 40

laiz [17]

<span>divide the smaller number by the larger number
</span>
36/40

<span>is 9/10 </span>

which is 90%

4 0

3 years ago