All categories

2 years ago

Help pls and no links

Mathematics

1 answer:

Nastasia [14]2 years ago

3 0

Answer:

C) 4/(x+y)²

Step-by-step explanation:

start by expanding so it is written as 2÷(x+y)/(x+y)÷2.

Then rearrange so that it is 2×2/(x+y)×(x+y) or 4/(x+y)²

You might be interested in

A line and a circle intersect at the points A and B. Use the equations below to find the coordinates of the points of intersecti

Margaret [11]

Answer:

Step-by-step explanation:

Given the equation of a line y = x + 4 and equation of a circle as

( x − 3 )² + ( y − 5 )² = 34, if the line and the circle intersect at points A and B, to get this points, we will substitute the equation of the line into that of the circle as shown;

We will have to expand the equation of the circle first before making the substitute.

( x − 3 )² + ( y − 5 )² = 34

x²-6x+9+y²-10y+25 = 34

x²+y²-6x+-10y+34-34 = 0

x²+y²-6x+-10y = 0

Substituting y = x+ 4 into the resulting expression;

x²+(x+4)²-6x+-10y = 0

x²+x²+8x+16-6x+-10(x+4) = 0

x²+x²+8x+16-6x+-10x-40 = 0

2x²-8x-24 = 0

x²-4x-12 = 0

(x²-6x)+(2x-12) = 0

x(x-6)+2(x-6) = 0

x+2 = 0 and x-6 = 0

x = -2 and 6

when x = -2;

y = -2+4

y = 2

when x = 6

y = 6+4

y = 10

The coordinates of the point of intersection are A(-2, 2) and B(6, 10).

4 0

3 years ago

If NL = 13, find NM. X+15 2x+34

Juli2301 [7.4K]

Answer:

Step-by-step explanation:

The question is incomplete. Here is the correct question.

If NL = 13, find NM. NM = X+15 ML = 2x+34

Using vector notation, NL = NM+ML

Substituting the given parameters into the equation;

13 = x+15+(2x+34)

13 = x+15+2x+34

Collect like terms.

x+2x+15+34 = 13

3x+49 = 13

3x = 13-49

3x = -36

x = -12

Given NM = x+15 and x = -12

NM = -12+15

NM = 3

4 0

3 years ago

Whats are the steps to multi-step equations?

mafiozo [28]

Write the problem. ...
Decide whether to use addition or subtraction to isolate the variable term. ...
Add or subtract the constant on both sides of the equation. ...
Eliminate the coefficient of the variable through division or multiplication. ...
Solve for the variable.

4 0

3 years ago

"A parachutist's rate during a free fall reaches 80 meters per second. What is this rate in feet per second? At this rate, how m

yawa3891 [41]

Assuming 70 m/s is terminal velocity

1 meter = 3.3 ft

so 70 meters = 231

231 ft/s

231 x 5 = 1155ft
hope i helped

5 0

3 years ago

Read 2 more answers

Write an equation of the line that passes through 7,10 and is perpendicular to the line y=1/2-9

kow [346]

An equation of the line that passes through (7,10) and is perpendicular to the line y=1/2x-9 is $y=-2x+24$