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3 years ago

PLSS HELP ME I WILL GIVE BRAINLIEST PLSSS

Mathematics

1 answer:

Firlakuza [10]3 years ago

4 0

Answer: -2

Step-by-step explanation: Perpendicular lines have negative reciprocal slopes. That means the fraction is flipped and multiplied by negative 1.

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What is the equation of the line that passes through the point ( − 8 , − 3 ) that is parallel to the line 5 x − 8 y = − 40 ? Wri

TEA [102]

Answer is -11 (-34 y=-45)

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1 year ago

Point P please help i appreciate whoever does (:

In-s [12.5K]

Answer:

y = (√7)/4

Step-by-step explanation:

The equation of the unit circle is ...

x^2 +y^2 = 1

Putting the given value in for x, we can find y to be ...

(-3/4)^2 +y^2 = 1

y^2 = 1 -(-3/4)^2 = 1 -9/16 = 7/16 . . . . . subtract 9/16

y = √(7/16) . . . . . . . . . . . take the square root; y > 0 here

y = (√7)/4

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3 years ago

Which equation represents the inverse of f(x)=(x+3)^2+5 for x ≤-3

makkiz [27]

Answer:

f(x)=(x+3)^2+5

let f(x)=y

y=(x+3)^2+5

interchanging role of x and y

x=(y+3)²+5

x-5=(y+3)²

√(x-3)-3=y

y=√(x-3)-3

:.inverse of f(x)=(x+3)^2+5 is f-¹(x)=√(x-3)-3

6 0

3 years ago

M(7, 5) is the midpoint of line RS The coordinates of S are (8, 7). What are the coordinates of R?

Shtirlitz [24]

Answer:

The coordinates of point R are (6 , 3)

Step-by-step explanation:

* Lets revise the rule of the mid-point

- The mid point (x , y)of a line whose end points are $(x_{1},y_{1})$

and $(x_{2},y_{2})$ is $(\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})$

∵ M is the mid point of line RS

∵ The coordinates of point M are (7 , 5)

∴ x = 7 and y = 5

∵ The coordinates of point R are $(x_{1},y_{1})$

∵ The coordinates of point S are (8 , 7)

∴ $(x_{2},y_{2})$ = (8 , 7)

∴ $x_{2}=8$ and $y_{2}=7$

- By using the rule above

∵ $x=\frac{x_{1}+x_{2}}{2}$

∵ $7=\frac{x_{1}+8}{2}$

- Multiply both sides by 2

∴ $14=x_{1}+8$

- Subtract both sides by 8

∴ $x_{1}=6$

∴ the x-coordinate of point R is 6

∵ $y=\frac{y_{1}+y_{2}}{2}$

∵ $5=\frac{y_{1}+7}{2}$

- Multiply both sides by 2

∴ $10=y_{1}+7$

- Subtract both sides by 7

∴ $y_{1}=3$

∴ the y-coordinate of point R is 3

* The coordinates of point R are (6 , 3)

6 0

3 years ago

What is the scientific notation of 0.000042?

vampirchik [111]

Answer:

4.2 × 10⁻⁵

Step-by-step explanation:

The decimal point must be after the first non-zero digit.

⇒ 4.2

Multiply 4.2 by a number that results in 0.000042. That number is 0.00001 or 10⁻⁵.

⇒ 4.2 × 10⁻⁵

5 0

3 years ago

Read 2 more answers