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4 years ago

Solve the following system of equations by linear combination: 5x 2y = 14 y = x – 7

1 answer:

4 0

I would use subsitution
y=x-7
sub x-7 for every x
5x+2(x-7)=14
5x+2x-14=14
add 14 to both sides
7x=28
divide both sides by 7
x=4
sub
y=x-7
y=4-7
y=-3

x=4
y=-3
(4,-3)

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Plz help me asap plzzzzz<br>.<br>.

Gre4nikov [31]

28:

1*28 = 28

2*14 = 28

4*7 = 28

Factors of 28 are 1, 2, 4, 7, 14, 28.

15:

1*15 = 15

3*5 = 15

Factors of 15 are 1, 3, 5, 15.

36:

1*36 = 36

2*18 = 36

3*12 = 36

4*9 = 36

6*6 = 36

Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36

29:

1*29 = 29

Factors of 29 are 1, 29.

6 0

4 years ago

Pls tell me the answer to the question ASAP i'll give brainliest lol

Katarina [22]

oof whats that

Step-by-step explanation:

3 0

3 years ago

Adm,Ming,and Clinton sold sandwiches in the ratio 4:7:3 to raise money for their scout troop.Ming sold 91 sandwiches. How may sa

bonufazy [111]

The ratio in which Adm, Ming and Clinton sold sandwiches = 4:7:3
Number of sandwiches sold by Ming = 91
Let us assume the common ratio to be = x
Then
7x = 91
x = 91/7
= 13
Then
The number of sandwiches sold by Adm = 4 * 13
   = 52
The number of sandwiches sold by Clinton = 3 * 13
      = 39
So
The total number of sandwiches
sold by Adm, Ming and Clinton = 52 + 91 + 39
      = 182.
So a total of 182 sandwiches were sold by Adm, Ming and Clinton.

7 0

4 years ago

A cylinder has a helght of 16 cm and a radius of 5 cm. A cone has a helght of 12 cm and a radius of 4 cm. If the cone is placed

erma4kov [3.2K]

Answer:

1055.04 cm³

Step-by-step explanation:

Given that,

Height of a cylinder, h = 16 cm

Radius of the cylinder, r = 5 cm

The height of a cone, h' = 12 cm

The radius of a cone, r' = 4 cm

The volume of the cylinder will be :

$V=\pi r^2 h\\\\=3.14\times 5^2\times 16\\\\=1256\ cm^3$

The volume of a cone is given by :

$V'=\dfrac{1}{3}\pi r^2 h\\\\=\dfrac{1}{3}\times 3.14\times (4)^2\times 12\\\\=200.96\ cm^3$

Volume of the air surrounding the cone Inside the cylinder = 1256 - 200.96 = 1055.04 cm³

Hence, the required answer is equal to 1055.04 cm³.

3 0

3 years ago

What is 15 rounded to the nearest houndredth

Molodets [167]

15 rounded to the nearest hundred is 100 or one hundred

3 0

3 years ago