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3 years ago

Which equation is linear?

Mathematics

2 answers:

MakcuM [25]3 years ago

7 0

Cc cc ccc ccccccccccccccccc cccccccc

NARA [144]3 years ago

6 0

I believe the answer is option C

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Solve the system of linear equations by elimination. x+4y=1 3x+5y=10

laiz [17]

Answer:

x = 5 , y = -1

Step-by-step explanation:

Solve the following system:

{4 y + x = 1 | (equation 1)

5 y + 3 x = 10 | (equation 2)

Swap equation 1 with equation 2:

{3 x + 5 y = 10 | (equation 1)

x + 4 y = 1 | (equation 2)

Subtract 1/3 × (equation 1) from equation 2:

{3 x + 5 y = 10 | (equation 1)

0 x+(7 y)/3 = -7/3 | (equation 2)

Multiply equation 2 by 3/7:

{3 x + 5 y = 10 | (equation 1)

0 x+y = -1 | (equation 2)

Subtract 5 × (equation 2) from equation 1:

{3 x+0 y = 15 | (equation 1)

0 x+y = -1 | (equation 2)

Divide equation 1 by 3:

{x+0 y = 5 | (equation 1)

0 x+y = -1 | (equation 2)

Collect results:

Answer: {x = 5 , y = -1

6 0

3 years ago

Read 2 more answers

In a right triangle, a and b are the lengths of the legs and c is the length of the hypotenuse. If b = 77 centimeters and c = 85

MAVERICK [17]

Answer:

The perimeter of the triangle 198 cm.

Step-by-step explanation:

Given that,

In a right angled triangle, a and b are the length of the legs and c is length of the hypotenuse.

Pythagorean Theorem:

Sum of square of the legs is equal to square of hypotenuse.

∴a²+b²=c²

a= ?, b= 77 cm and c=85 cm

a²+77²=85²

⇒a²+5929=7225

⇒a²=7225-5929

⇒a²= 1296

⇒a = 36 cm

The perimeter of the triangle = sum of all sides

=a+b+c

=(36+77+85) cm

= 198 cm

4 0

3 years ago

Solve for x: x^2=a If a<0, then If a=0, then If a>0, then

Anastaziya [24]

if a > 0, there are two possible solutions:

$x^{2} = a\\\sqrt{x^{2} } = \sqrt{a} \\$

the square root of a square is the base in absolute value bars

$|x| = \sqrt{a}$

$x = -\sqrt{a} ; x = \sqrt{a}$

if a = 0, that means x = 0. anything multiplied by 0 is 0

if a < 0, there are no solutions because anything squared has to be positive

6 0

3 years ago

When translating a figure using a combination of two translations, is the resulting figure congruent to the original figure?

emmainna [20.7K]

It has to be the original figure but it is in a different spot on the graph

6 0

3 years ago

X(x+1)(x+3)(x+5) - x(x+3)(x+5)

mash [69]

Answer:

x^4 + 8x^3 + 15x^2

Step-by-step explanation:

8 0

3 years ago