3 years ago

4xsquared-3xy+9ysquared-3 (5xy+7ysquared)

1 answer:

7 0

4x² - 3xy + 9y² - 3(5xy + 7y²)
4x² - 3xy + 9y² - 3(5xy) - 3(7y²)
4x² - 3xy + 9y² - 15xy - 21y²
4x² - 3xy - 15xy + 9y² - 21y²
4x² - 18xy - 12y²

You might be interested in

The state highway patrol wants to evaluate a new rule for vehicles that was put into place to prevent road accidents across all

Mnenie [13.5K]

Jcjcjcjcjcjcjcjcjcjcj

3 0

3 years ago

8 divided by 2 4/9 plz help me now

dezoksy [38]

Answer:

3.27272727273

Step-by-step explanation:

you simplify the fraction then you make 8 into 8/1 then you divide and if you want decimal its 3.27272727273

7 0

3 years ago

Sighting the top of a building, a surveyor measured the angle of elevation to be 60 degrees. The measurement is taken 200 feet f

olya-2409 [2.1K]

This is a 30-60-90 triangle
opposite side of rigt angle=2x
opposite side of 60 degrees is x√3
opposite sides of 30 degree is x
the right angle is at the base of the building so therefor
200=x
2x=distance from surveor to top of building and x√3=height of building

x=200
200√3≈346.41

the answer is 346.41 feet

8 0

3 years ago

Read 2 more answers

A2=b2=c2 solve for a

Over [174]

Step-by-step explanation:

A²+B²=C²

A²+4²=5²

A²+16=25

-16 -16

A²=9

√A=√9

A=3

3 0

3 years ago

What are the x- and y-coordinates of point C, which partitions the directed line segment from A to B into the ratio 5:8? Round t

Fantom [35]

Answer:

(1.2, –4.7)

Step-by-step explanation:

Since in the question it is mentioned that on the plane of coordinate, a line is made from point A (7,-2) to point B(-8,-9)

Also, the ratio of A to B is 5:8

Based on this, the x and y coordinates at point C is

$= [\frac{5\times (-8) + 8\times 7}{5 + 8} , \frac{5\times (-9) + 8\times -2}{5 + 8}]\\\\= [\frac{16}{3}, \frac{-61}{13}]$

= (1.2, –4.7)

Hence, the x and y coordinates of point C is (1.2, –4.7)

Therefore the last option is correct

4 0

3 years ago