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2 years ago

Is it true or false?

Mathematics

1 answer:

lesya692 [45]2 years ago

7 0

Answer:

True

Step-by-step explanation:

Circumference is diameter x $\pi$

When you divide $\pi$ , you get diameter

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<img src="https://tex.z-dn.net/?f=x1%2B2x2-x3%3D3%2C%202x1%2Bx2-2x3%3D1%2C%203x1%2B4x2-5x3%3D5" id="TexFormula1" title="x1+2x2-x

o-na [289]

Answer: x1 = 0; x2 = 5/3; x3 = 1/3

x1 + 2x2 - x3 = 3 => 2x1 + 4x2 - 2x3 = 6

2x1 + x2 - 2x3 = 1

=> 4x2 - x2 = 5

⇔ 3x2 = 5

⇔ x2 = 5/3

with x2 = 5/3, we have: x1 - x3 = 3 - 10/3 = -1/3

3x1 - 5x3 = 5 - 4.5/3 = -5/3

=> x1 = 0

x3 = 1/3

Step-by-step explanation:

7 0

2 years ago

What is 8,419 divided by 3

vagabundo [1.1K]

Answer:

2806.33333333

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Encuentra en cada producto notable el error o errores,enciérralo y escribe el resultado correcto.

lbvjy [14]

Given:

The equation is:

$(2x+3y)(2x-3y)=4x^2+6y^2$

To find:

The error in the given equation and correct it.

Solution:

We have,

$(2x+3y)(2x-3y)=4x^2+6y^2$

Taking left-hand side, we get

$L.H.S.=(2x+3y)(2x-3y)$

$L.H.S.=(2x)^2-(3y)^2$ $[\because a^2-b^2=(a-b)(a+b)]$

$L.H.S.=(2)^2(x)^2-(3)^2(y)^2$ $[\because (ab)^x=a^xb^x]$

$L.H.S.=4x^2-9y^2$

It is not equal to right-hand side $4x^2+6y^2$ . In the right hand side, there must be a negative sign instead of positive sign.

Therefore, $(2x+3y)(2x-3y)=4x^2-6y^2$ .

8 0

3 years ago

A line through the origin has a slope of 1 / 3. Carlos thinks the slope of a perpendicular line at the origin will be 3.

OLEGan [10]

Answer:

Carlos is incorrect.

Step-by-step explanation:

We have been given that a line through the origin has a slope of $\frac{1}{3}$ . Carlos thinks the slope of a perpendicular line at the origin will be 3.

We know that the slope of a perpendicular line to a given line is always negative reciprocal of the slope of the given line.

The slope of the perpendicular line at the origin will be negative reciprocal of $\frac{1}{3}$ .

Let us find negative reciprocal of $\frac{1}{3}$ as:

$-\frac{1}{\frac{1}{3}}=-\frac{1\cdot 3}{1}=-3$

Since the slope of a perpendicular line at the origin is $-3$ , therefore, Carlos is incorrect.

4 0

2 years ago

GIVING BRAINLIEST

AveGali [126]

Answer:

(-4,3)

Step-by-step explanation:

8 0

1 year ago