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Nimfa-mama [501]
3 years ago
7

Write an equation of the line perpendicular to the given line that contains P.

Mathematics
1 answer:
lara31 [8.8K]3 years ago
7 0

Answer:

Step-by-step explanation:

perp. -5

y + 7 = -5(x - 4)

y + 7 = -5x + 20

y = -5x + 13

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The difference of the square of a number and 4 is equal to 3 times that number. Find the negative solution.
leonid [27]

The negative solution is x = –1.

Solution:

Let the number be x.

Square of a number = x²

3 times a number = 3x

Difference of square of a number and 4 = 3 times that number

\Rightarrow x^2-4=3x

Subtract 3x from both sides of the equation, we get

\Rightarrow x^2-3x-4=0

–3x can be written as x – 4x.

\Rightarrow x^2+x-4x-4=0

\Rightarrow( x^2+x)+(-4x-4)=0

1st bracket have common term x and bracket have –4 common term.

\Rightarrow x( x+1)-4(x+1)=0

Take common term x + 1 outside.

(x+1)(x-4)=0

<em>By zero factor principle, if AB = 0 then A = 0 or B = 0.</em>

x + 1 = 0,   x – 4 = 0

x = –1,   x = 4

The negative solution is x = –1.

7 0
4 years ago
What are the factors of x2 − 64?
geniusboy [140]
Well, should be likee thiss correct meh if im wrong or what ever, but
 the answer would be, last one (x + 8)(x - 8), well 1, is because the 64 is a negative so if you would just take that 64 and bring it down then look at this onece the work is donee then when u add the 2 numbers that x would be x² or x2 n  that - 64 is that + 8 (-8) witch would equal out so if you really look at it the CORRECT ANSWER WOULD BE B. (x - 8)(x -8)


 i realli understand if youu don't then comment in the sec beloww↓
6 0
3 years ago
What is 40 percent of an hour? please write answer into hours and minutes. I will mark brainliest!!!!!
Dvinal [7]

Answer:

25 minutes

Step-by-step explanation:

25 mintes

3 0
3 years ago
Read 2 more answers
Whats the cube root of 3375 by prime factorization
Georgia [21]

Answer:

15

Step-by-step explanation:

Prime factors of 3375 are 3, 3, 3, 5, 5, 5.

Since you need the ∛ of 3375, ∛3375=15

7 0
3 years ago
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Answer quick for brainliest
Verizon [17]

Answer:

y=-2x+4

Step-by-step explanation:

Hello there!

Using y=mx+b, -2 is the slope and 4 is the y-intercept.

;)

7 0
3 years ago
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