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3 years ago

1. Solve by graphing: 4x + y = 4 3x – y = 3

Mathematics

2 answers:

artcher [175]3 years ago

4 0

Answer:

y = -4x+4

y = 3x-3

Step-by-step explanation:

First equation subtract 4x from both sides

Second equation deduct 3x both sides, then multiply both sides by a negative

1. y = -4x+4

2. y= 3x-3

lesya [120]3 years ago

3 0

☽------------❀-------------☾

Hi there!

~

Answer:

A) $y = -4x + 4$

______________|

B) $y = 3x + -3$

______________|

❀Hope this helped you!❀

☽------------❀-------------☾

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Multiply: 2.7 × (–3) × (–1.2). A. –9.72 B. –10.8 C. 10.8 D. 9.72

Vikentia [17]

Answer: $\text{ D) } 9.72$

Step-by-step explanation:

Here the give expression is,

$2.7 \times(-3)\times (-1.2)$

We can write,

$2.7 \times(-3)\times (-1.2) = 2.7 \times 3.6$ ( because $-a\times -b = ab$ )

$2.7 \times(-3)\times (-1.2) = 9.72$

⇒ Option D is correct.

6 0

2 years ago

Read 2 more answers

A caterpillar started at point (−2.5, −5.5) on a coordinate plane. She crawled in a straight line through the origin to point (4

alexgriva [62]

Answer:

The value of y is $99$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem the line passes through the origin

therefore

Is a proportional variation

Find the value of k

with the point $(-2.5,-5.5)$

$k=y/x=-5.5/-2.5=2.2$

The equation is equal to

$y=2.2x$

For $x=45$

substitute

$y=2.2(45)=99$

6 0

2 years ago

Read 2 more answers

How do I find the value of X ???

aleksandr82 [10.1K]

To solve for the value of x, you can simply add all of the values and expressions together and make it equal to 180 degrees, since the sum of all angles in a triangle add up to this amount.

Then we can solve for X, by algebra.

7 0

3 years ago

Help ASAP‼️‼️‼️ PLEASE HELP‼️

11Alexandr11 [23.1K]

Answer:

Ohh

Step-by-step explanation:

The answer is already there

4 0

2 years ago

Which of the following is the equation of a hyperbola with center at (0, 0), with a = 4, b = 1, opening horizontally?

matrenka [14]

Answer:

The equation of the hyperbola is x²/16 - y²/1 = 1

Step-by-step explanation:

* Lets study the equation of the hyperbola

- The standard form of the equation of a hyperbola with

center (0 , 0) and transverse axis parallel to the x-axis is

x²/a² - y²/b² = 1

# The length of the transverse axis is 2a

# The coordinates of the vertices are (±a , 0)

# The length of the conjugate axis is 2b

# The coordinates of the co-vertices are (0 , ±b)

# The coordinates of the foci are (± c , 0),

# The distance between the foci is 2c where c² = a² + b²

* Now lets solve the problem

∵ The center of the hyperbola is (0 , 0)

∵ It is opening horizontally

∴ x²/a² - y²/b² = 1

∵ a = 4 , b = 1

∴ a² = (4)² = 16

∴ b² = (1)² = 1

∴ x²/16 - y²/1 = 1

∴ The equation of the hyperbola is x²/16 - y²/1 = 1

6 0

2 years ago

1. Solve by graphing: 4x + y = 4 3x – y = 3​

1. Solve by graphing: 4x + y = 4 3x – y = 3