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Sergio039 [100]
2 years ago
6

(9x-4y) x (-2) + (3x+2y)

Mathematics
2 answers:
Mama L [17]2 years ago
7 0

Answer:-18x^{2} +8yx+3x+2y

Step-by-step explanation:

aleksklad [387]2 years ago
4 0

Answer:(3x-2y)(3x+2y)

Step-by-step explanation:

IT is this one

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Which equation correctly describes the relationship between the measures of the angle and arcs formed by the intersecting secant
marishachu [46]
Angle m∠1 if formed by a tangent and  secant intersecting outside of circle. The intercepted arcs are arc LK and arc JK.
Thus;
Angle formed by Tangent and secant 
=1/2(DIFFERENCE of Intercepted Arcs)
m∠1=1/2(mJK-LK)

Answer: m∠1=1/2(mJK-KL)
3 0
3 years ago
during the 2015 nascar races, the car completed 371.5 laps around the track. During the 2016 race,the racers completed 378.925 l
grin007 [14]

Answer:

7.425 laps.

Step-by-step explanation:

That would be 378.925 - 371.5

= 7.425 laps,

7 0
3 years ago
Janice swam in the 400​ ___ backstroke.
ruslelena [56]
Meter/ yard. Likely meter since that is high/college standard
7 0
3 years ago
How to show the work for x4-y4
Juli2301 [7.4K]
I think you can solve it by
=(x^2 - y^2) *( x^2 + y^2)
= (x -y)*(x+y)*(x^2 + y^2)
6 0
3 years ago
A rectangle is 5 meters longer than its width. If the length is shortened by 2 meters and width is increased by 1 meter, the are
Katarina [22]

Answer: Area = 6m²

              Smaller number = 16

              Hours = 9.6 h

Step-by-step explanation:

A rectangle is 5 meters longer than its width. If the length is shortened by 2 meters and width is increased by 1 meter, the area remains the same. Find the area of the rectangle.

1) w = x m                                2) w = x + 1 m

     l = x + 5  m                               l = x + 5 - 2 = x + 3 m

A₁ = A₂

A = w*l

A₁ = x(x+5) = x² + 5x

A₂ = (x+1)(x+2) = x² + x + 2x + 2 = x² + 3x + 2

A₁ = A₂

x² + 5x = x² + 3x + 2

5x - 3x = 2

2x = 2

x = 1

A₁ = x(x+5) = 1.6 = 6 m²

The ratio of two numbers is 2:5. If the larger number is 40, what is the smaller number.

<u> 2 </u> = <u> x </u>

5     40

5x = 80

x = 80/5 = 16

Sixteen construction workers can finish cementing a floor of a building in 3 hours. On a certain day, only 5 construction workers are available for the job. How long will it take the 5 construction workers to do the cementing job?

workers                      hours

    16                              3

     5                               x

↑                                          ↓              inversely proportional

<u> 5 </u> = <u> 3 </u>

16      x

5x = 16*3

5x = 48

x = 48/5

x = 9.6 h

 

6 0
3 years ago
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