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3 years ago

15

49 POINTS what is the first step to solve this system of equations? 4x-3y=-10 2x+3y=4

2 answers:

xxTIMURxx [149]3 years ago

6 0

Answer:

Add the 2 equations.

Step-by-step explanation:

You add the equations. This will eliminate y and give you an equation in x only.

4x - 3y = -10

2x + 3y = 4 Add:-

6x = -6

Mariulka [41]3 years ago

5 0

If you want use elimination methode, then you add both sides of the equations:

$\underline{+\left\{\begin{array}{ccc}4x-3y=-10\\2x+3y=4\end{array}\right}\\.\qquad6x=-6\qquad\text{divide both sides by 6}\\.\qquad \boxed{x=-1}\\\\\text{Next, put the value of x to the first or second equation.}\\\\2x+3y=4\\.\qquad\Downarrow\\2(-1)+3y=4\\-2+3y=4\qquad\text{add 2 to both sides}\\3y=6\qquad\text{divide both sides by 3}\\\boxed{y=2}$

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Hitman42 [59]

The segment goes from point (-1, 3) to (1,-1)
Slope = rise / run = (-3 - 1) / (1 - (-1)) = -4 / 2 = -2
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4 years ago

Read 2 more answers

Point A is located at (4, 7). It will be translated 5 units right and 3 units down. Write the rule and give the location of poin

Anarel [89]

Answer:

The rule of translation is $A(x',y') = A(x,y) + (5,-3)$ .

The translated vector is $A(x',y') = (9, 4)$ .

Step-by-step explanation:

Let supposed that translation to the right is in the +x direction and translation downwards in the -y direction.

We procced to translate the operation into mathematic terms. A translation consists in a vectorial sum on a given vector. That is:

$A(x',y') = A(x,y) + U(x,y)$ (Eq. 1)

Where:

$A(x,y)$ - Original vector, dimensionless.

$U(x,y)$ - Translation vector, dimensionless.

$A(x',y')$ - Translated vector, dimensionless.

If we know that $U(x, y) = (5, -3)$ , then the rule of translation is described by:

$A(x',y') = A(x,y) + (5,-3)$ (Eq. 2)

If $A(x, y) = (4,7)$ , then the new location of A is:

$A(x',y') = (4,7)+(5,-3)$

$A(x',y') = (9, 4)$

The translated vector is $A(x',y') = (9, 4)$ .

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4 years ago

A professional basketball court is in the shape of a rectangle. It is 50 ft wide and 94 ft long. A player runs one time around t

mote1985 [20]

Answer:

288 feet PLEASE GIVE BRAINLIEST

Step-by-step explanation:

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50 x 2 = 100 ft

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The player ran 288 feet.

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3 years ago

What kind of triangle is ABC? Select all that apply.

iVinArrow [24]

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2 years ago

Complete parts (a) and (b) below.

jeka94

Answer:

a) The mean of the probability distribution = 0.6

b) The variance of the probability distribution = 0.3

c) The standard deviation of the probability distribution = 0.5

Step-by-step explanation:

a) Data and Calculations:

number of dogs per household in a small town

Dogs Probability Expected Mean Diff Mean Diff.

Value Squared

0 0.650 0 -0.569 0.32376

1 0.216 0.216 -0.353 0.12461

2 0.087 0.174 -0.395 0.15603

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4 0.014 0.056 -0.513 0.26317

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7 0

3 years ago