3 years ago

Solve by substitution

Mathematics

1 answer:

Hunter-Best [27]3 years ago

7 0

Answer:

Step-by-step explanation:

y = -9 ------(1)

9x -4y = -9 -------(2)

substitute (1) into (2)

9x - 4 (-9) = -9

9x = - 45

x = -5

there you go, x = -5 and y = -9

so. (-5 , -9 )

hope this helps

please mark it brainliest

You might be interested in

Use Cavalieri’s Principle to calculate the exact volume of an oblique cylinder with a height of 10 meters and a circular base wi

nirvana33 [79]

Answer: Volume of an oblique cylinder is 2011.43 sq.m.

Step-by-step explanation:

Since we have given that

Radius of a cylinder = 8 meters

Height of a cylinder = 10 meters

Cavelieri's Principle states that volume of an oblique cylinder is same as the volume of right circular cylinder with equal radius and height.

As we know the formula for "Volume of cylinder":

$Volume=\pi r^2h\\\\V=\frac{22}{7}\times 8\times 8\times10\\\\V=\frac{14080}{7}\\\\V=2011.43$

Hence, Volume of an oblique cylinder is 2011.43 sq.m.

7 0

3 years ago

Read 2 more answers

HELP REALLY QUICK PLEASE

chubhunter [2.5K]

Answer:

The answer is 140

The yellow part which is shaded is 14x10 which equals 140

8 0

3 years ago

The nursing department of a college surveyed two hundred graduates from their programs about their current

Fittoniya [83]

Answer:

8/9

Step-by-step explanation:

7 0

3 years ago

The length of a rectangle is eight more than twice the width. The perimeter is 64. Find the length and width

Rufina [12.5K]

Answer:

width 32 length 32

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is the sum of 1/8+5/16+3/8

Murljashka [212]

Answer:

i think it's 13/16

Step-by-step explanation:

1/8 times 2 is 2/16 and 3/8 times 2 is 6/16 so add all up to get 13/16

4 0

3 years ago

Read 2 more answers