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4 years ago

Francine solves the system of equations using the linear combination method.

Mathematics

2 answers:

k0ka [10]4 years ago

6 0

<span>
C is the correct answer.</span><span>
</span>

vaieri [72.5K]4 years ago

6 0

Answer:

Multiply 4x+3y=−1 by 3. Multiply 3x−5y=4 by −4 . Add the resulting equations together.

Step-by-step explanation:

Given the simultaneous equation below:

4x+3y=−1 ...(1) × 3

3x−5y=4 ...(2) × -4

Using elimination method to solve the problem,

Before we can eliminate x, the coefficient of x in both equation must have similar whole number as coefficient.

To make the coefficient equal, we will multiply equation 1 by 3 and equation 2 by -4 as shown above

The equations will then become

12x+9y = -3

-12x+20y = -16

Then we will add the resulting simultaneous equations.

The steps that would allow her to eliminate the x terms in the system of equations is to "Multiply 4x+3y=−1 by 3. Multiply 3x−5y=4 by −4 . Add the resulting equations together"

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Graph the system of inequalities. Show at least two points for each inequality. (Lesson 1.08)

rjkz [21]

The inequalities and the points are

y + 2 ≤ 5x: (5, -2) and (10, 1)
y + x > -4: (5, -2) and (10, 1)
y ≤ 1/3x: (5, -2) and (10, 1))

<h3>How to graph the system of inequalities?</h3>

The system of inequalities is given as:

y + 2 ≤ 5x

y + x > -4

y ≤ 1/3x

Next, we plot each inequality in the system of inequalities using a graphing calculator

See attachment for the graph of the system of inequalities y + 2 ≤ 5x, y + x > -4 and y ≤ 1/3x

From the attached graph, we have the following points:

y + 2 ≤ 5x: (5, -2) and (10, 1)

y + x > -4: (5, -2) and (10, 1)

y ≤ 1/3x: (5, -2) and (10, 1)

Read more about inequalities at:

brainly.com/question/24372553

#SPJ1

5 0

2 years ago

CAN SOMEONE PELSE HELP ME!!!!!!!!!!!11

GuDViN [60]

Answer:

It's false.

Step-by-step explanation:

Dont ask me! all i know is that no.4 is false and that I learned bar lines and negitives in 5th grade!!

3 0

3 years ago

48 ÷ [(13 – 6) — 6°] + 4 - 2 =

kvasek [131]

Answer:

brainlest plzzzzzz 50

Step-by-step explanation:

pemdas

so u you do brackets first

13-6=7

7-6=1

next you do multiplication and division

48/1=48

next is addition and subtraction

48+4=52

52-2=50

so you awnswer is 50

6 0

3 years ago

When drawn in standard position, an angle a has a terminal ray that lies in the second quadrant and whose sine is equal to 9/41.

Semenov [28]

Answer:

$\frac{40}{41}$

Step-by-step explanation:

We have the angle in standard post has a sine ratio of

$\frac{9}{41}$

This means the opposite side length of the corresponding right triangle is 9 units and the hypotenuse is 41 units.

Using Pythagoras Theorem, the adjacent side length can be found using:

${x}^{2} + {9}^{2} = {41}^{2}$

This implies that:

${x}^{2} = {41}^{2} - {9}^{2}$

${x}^{2} = 1600$

$x = \pm \sqrt{1600}$

$x = \pm40$

The cosine ratio is adjacent over hypotenuse.

$= \frac{ \pm40}{41}$

Since we are in the second quadrant, the cosine ratio is negative;

$= - \frac{40}{41}$

3 0

3 years ago

What rule would you use to reflect the given trapezoid over the y-axis?

miskamm [114]

Answer

(x,y) (-x, y)

Step-by-step explanation:

4 0

3 years ago