All categories

3 years ago

Solve the system of equations. 2x+7y=3 x=−4y

Mathematics

2 answers:

11111nata11111 [884]3 years ago

6 0

Answer:

x,y 0,0

Step-by-step explanation:

viktelen [127]3 years ago

3 0

2x=-7y+3
2x=-4y
-7y+3=-4y
3=3y
1=y

x=-4(1)
x=-4

You might be interested in

The sum of the digits of a three-digit number is 16 .the tens digit is two more than the units digit and the unit digit is tripl

Anit [1.1K]

Answer:

286

Step-by-step explanation:

If the three-digit number is xyz, then:

x + y + z = 16

y = z + 2

z = 3x

Substitute the third equation into the second:

y = 3x + 2

Substitute this and the third equation into the first:

x + (3x + 2) + (3x) = 16

7x + 2 = 16

7x = 14

x = 2

y = 3x + 2 = 8

z = 3x = 6

The number is 286.

4 0

4 years ago

PLZ help me super really really fast

maria [59]

Answer:

A. 3 cm

Step-by-step explanation:

The smallest face has the sides 4 cm and 8 cm. If the water is 4 cm from its top, then the height of the water is $16-4=12$ cm and the volume of the water is

$V_{water}=4\cdot 8\cdot 12=384\ cm^3$

The largest face has the sides 8 cm and 16 cm. If the container is placed on its largest face, then the volume of the water is

$V_{water}=8\cdot 16\cdot h \ cm^3,$

where h is the height of the water.

Equate volumes of the water:

$8\cdot 16\cdot h=384\\ \\h=\dfrac{384}{8\cdot 16}=3\ cm$

Therefore, the water is 3 cm from the bottom.

4 0

3 years ago

A 5 inch tall bamboo shoot doubles in height every 3 days. If the equation y=ab exponent X,where x is the number of doubling per

Andreyy89

"x = 2; a = 5; b = 3" A 5 inch tall bamboo shoot doubles in height every 3 days. If the equation y=ab^x, where x is the number of doubling periods, represents the height of the bamboo shoot.

8 0

4 years ago

10 POINTS!

katrin2010 [14]

Answer:

A = yes

B = no

C = yes

D = no

E = yes

F = yes

Hope I helped!!!

7 0

3 years ago

If f(x) varies directly with x and f(x)=40 when x=8, find the value of f(x) when x=2.

melamori03 [73]

f(x)=40

x=8

so if x=2 it would be 40/8 which is 5

6 0

3 years ago

Read 2 more answers

Solve the system of equations. 2x+7y=3 x=−4y ​

Solve the system of equations. 2x+7y=3 x=−4y