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4 years ago

Given f (x)= -x (x + 6), what is f (-3)?

Mathematics

1 answer:

Serggg [28]4 years ago

7 0

Answer:

Step-by-step explanation:

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EASY AND BRAINLIEST!!!!

nirvana33 [79]

Answer:

$6x-4y=15$

Step-by-step explanation:

step 1

Find the slope of line L

we know that

If two lines are perpendicular, then their slopes are opposite reciprocal

In this problem we have

$2x + 3y = 5$

Isolate the variable y

$3y = -2x+5\\y=-(2/3)x+(5/3)$

The slope of the given line is

$m=-2/3$

The slope of the Line L is

$m=3/2$

step 2

Find the x-intercept of the line

$2x + 3y = 5$

The x-intercept is the value of x when the value of y is equal to zero

For y=0

$2x + 3(0) = 5\\x=5/2$

The x-intercept is the point (5/2,0)

step 3

Find the equation of the line L

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=3/2\\point (5/2,0)$

substitute

$y-0=(3/2)(x-5/2)$

$y=(3/2)x-(15/4)$

Convert to standard form

AX +By+C

where

A is a positive integer

B and C are integers

Multiply both sides by 4

$4y=6x-15\\6x-4y=15$

3 0

4 years ago

Can someone help me with and and can you please write how you got it so I can understand

EastWind [94]

Answer:

12x + 4

Step-by-step explanation:

ok so a rectangle has 4 sides, 2 of which are called lengths, and 2 of which are widths.

length = 2x-3

width = 4x+5

the perimenter is the total of the 4 sides.

2(2x-3) = 4x-6 (the total for lengths)

2(4x+5) = 8x+10 (the total for widths)

add the 2 together:

12x+4

8 0

3 years ago

Read 2 more answers

What is the surface area of the regular pyramid given below?

yuradex [85]

For this case we have by definition, that the total surface area of a regular pyramid with a square base is given by:

$SA = \frac {1} {2} p * S + A_ {b}$

Where:

p: It is the perimeter of the base

S: It's the inclination

$A_ {b}:$ It is the area of the base

Substituting:

$A_ {b} = 7 ^ 2 = 49units ^ 2\\p = 7 + 7 + 7 + 7 = 28units\\S = 10units\\SA = \frac {1} {2} 28 * 10 + 49\\SA = 140 + 49\\SA = 189 \ units ^ 2$

ANswer:

Option B

3 0

4 years ago

The vertices of JKL are J(4,3), K(-3,4), L(-1,-1). Graph the image of JKL after a reflection in the line y=-x.

nalin [4]

y=-x

J(-4,3)

K(3,-4)

L(1,1)

6 0

3 years ago

Use the information in the table to find the indicated probability.

grin007 [14]

Answer:

$P(\text{Female}|\text{Advanced})=\frac{322}{567}\approx0.5679$

Step-by-step explanation:

$\displaystyle P(\text{Female}|\text{Advanced})=\frac{P(\text{Female and Advanced})}{P(\text{Advanced})}\\\\P(\text{Female}|\text{Advanced})=\frac{\frac{322}{2501}}{\frac{567}{2501}}\\\\P(\text{Female}|\text{Advanced})=\frac{322}{567}\\ \\P(\text{Female}|\text{Advanced})\approx0.5679$

5 0

3 years ago