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2 years ago

I need help with one question. anyone pls?

Mathematics

2 answers:

denpristay [2]2 years ago

7 0

Answer:

(-3,4)......... multiply the first equation by the coefficient of y i.e 3 (of 2nd equation)...

again multipy the 2nd eq by the coefficient of y i.e 2 (of 1st eq)

and finally solve the eq 3 and 4 ...(solve the both eq formed by multiplying)

oksano4ka [1.4K]2 years ago

4 0

Answer:

(-3,4)

Step-by-step explanation:

x + 2y = 5

-3 + (2*4) = 5

-3 + 8 = 5

5 = 5

2x + 3y = 6

(2*-3) + (3*4)=6

-6 + 12 = 6

6 = 6

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Which equations are equivalent to Y=2/3X-4 when written in slope-intercept form? Check all that apply. A =3X-2Y=4. B=2X-3Y=12. C

klemol [59]

Answer:

B and C

Step-by-step explanation:

Rearrange each equation into slope- intercept form

3x - 2y = 4 ( subtract 3x from both sides )

- 2y = - 3x + 4 ( divide all terms by - 2 )

y = $\frac{3}{2}$ x - 2 ← not equivalent

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- 3y = - 2x + 12 ( divide all terms by - 2 )

y = $\frac{2}{3}$ x - 4 ← equivalent

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2x - 3y = 12 ← same as B ⇒ equivalent

2(x + 6) = 3y

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4 0

3 years ago

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112 is 70% of _______

aliina [53]

Answer:

160

Step-by-step explanation:

70% of 160=112.

A handy trick is to divide the number by the percentage.

Brainliest please I need those points.

8 0

3 years ago

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Please help as soon as possible!

AnnZ [28]

Answer:

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

To calculate m use the slope formula

m = ( y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (3, 6) and (x₂, y₂ ) = (8, 4)

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To find c substitute either of the 2 points into the partial equation

Using (8, 4), then

4 = - $\frac{16}{5}$ + c ⇒ c = 4 + $\frac{16}{5}$ = $\frac{36}{5}$

y = - $\frac{2}{5}$ x + $\frac{36}{5}$ ← equation of line

6 0

2 years ago

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SpyIntel [72]

Answer:

The point O can be (x,y) or (-x,y) or (-x,-y) or ( x,-y) reason being that you haven't given point O lies in which quadrant.

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Then a reflection across the y-axis has taken place.

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Then a translation a units to the right and b units up has taken place.

(y,-x)=(y+a,-x+b)

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Then a rotation of 180 degrees counterclockwise about the origin has taken place.

(y+a,-x+b)=[-(y+a),-(-x+b)]

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Now Again a reflection across the Y axis has taken place.

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[-(-y+a),-(x+b)]=[(-y+a),-(x+b)]

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3 years ago

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3 years ago

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