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Aleks04 [339]
3 years ago
13

Solve the system of linear equations. separate the x- and y- values with a coma.

Mathematics
1 answer:
Katarina [22]3 years ago
7 0
The Answer is x=7, y=6

Solve the following system:
{14 x - 4 y = 74 | (equation 1)
{7 x - 7 y = 7 | (equation 2)
Subtract 1/2 × (equation 1) from equation 2:
{14 x - 4 y = 74 | (equation 1)
{0 x - 5 y = -30 | (equation 2)
Divide equation 1 by 2:
{7 x - 2 y = 37 | (equation 1)
{0 x - 5 y = -30 | (equation 2)
Divide equation 2 by -5:
{7 x - 2 y = 37 | (equation 1)
{0 x+y = 6 | (equation 2)
Add 2 × (equation 2) to equation 1:
{7 x+0 y = 49 | (equation 1)
{0 x+y = 6 | (equation 2)
Divide equation 1 by 7:
{x+0 y = 7 | (equation 1)
{0 x+y = 6 | (equation 2)
Collect results:
Answer:  {x = 7
                {y = 6

P{lease note the brackets are supposed to go over both equations but I haven'y been able to find a way to make it work, see attachment.

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Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the
rodikova [14]

Answer:

√27

Step-by-step explanation:

The triangles of the pyramid are equilateral triangles with sides of 6''.

Dividing a triangle into two equal parts we get two congruent right triangles, with a hypotenuse of 6'', one leg of 3'', and the other leg is the slant height (s). From Pythagorean theorem:

3² + s² = 6²

s² = 6² - 3²

s = √27

8 0
3 years ago
What is the equation of the line that passes through the point (-6,1) and has a slope of 1/6
anyanavicka [17]

Answer:y=1/6x+2

Step-by-step explanation:

Y=1/6x+b

Plug in (-6,1)

1=1/6(-6)+b

1=-1+b

Add 1 to both sides

1+1=b

2=b

Y=1/6x+2

8 0
3 years ago
4 x 100 + 8 x 10 + 9 x 1 + 8 x (1/100) + 5 x (1/1,000) in standard form.
Phoenix [80]
What’s standard form again? I forgot
4 0
3 years ago
Waf number us 20% of 40
NikAS [45]

Answer:. .

Answer:

20% of 40 is 8

6 0
3 years ago
Which point is collinear with points E and Y?
kobusy [5.1K]

Answer:

G

Step-by-step explanation:

Co linear means that a point is on the same line as some given point.

AY forms a line segment and is part of EG which is a diagonal of the base..

Therefore AY and G are all colinear. The answer you want is G.

7 0
3 years ago
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