All categories

3 years ago

Please help!! I'll give 50 points

Mathematics

2 answers:

Scrat [10]3 years ago

3 0

Answer: y=0 and x=3

Step 1: Solve for x in 2x+9y=6.

$2x+9y=6$

$2x=6-9y$ (Subtract 9y from both sides)

$x=3 - 4.5y$ ( Divide both sides by 2)

Step 2: Replace x with 3-4.5y

$-7x - 8y = -21\\-7(3-4.5y) - 8y = -21\\$

Step 3: Solve for y

$(-21)+31.5y-8y=(-21)$ (By looking at this, we can determine that y=0)

Step 4: Replace y with 0

$2x+9y=6\\2x+9(0)=6\\2x=6\\$

$x=3$ (Divide both sides 2)

Therefore, y=0 and x=3

lesya692 [45]3 years ago

3 0

Answer: y=0 and x=3

Step-by-step explanation:

You might be interested in

Please help <br>please find the answer quick

sergejj [24]

1. 64+28+21=113 sq. feet

2. 5x5=25 sq. ft.

5 0

3 years ago

Which of the following equations is of a parabola with a vertex at (0, 6)?

RoseWind [281]

Answer:

y= x^2 + 6

Step-by-step explanation:

y= x2 + 6 (which should be written as y= x^2 + 6) has the form y - k = a(x - h)^2. For y= x^2 + 6, h = 0 and k = 6. Thus the vertex is (0, 6)

4 0

3 years ago

PLEASE?????????????????????

faltersainse [42]

X+y<10x+y<10 and x>4x4

8 0

3 years ago

Read 2 more answers

Something weird was happening in space! Twenty-nine planets all bumped into each other planets once. How many bumps were felt th

gogolik [260]

Answer:

Do you mean how many waves of sound and light went through the galaxy

5 0

3 years ago

GIVING BRAINIEST IF CORRECT!!<br><br> Factor x^4 - 16 completely

ioda

Answer:

$(x^2 + 4)(x + 2)(x - 2)$

Step-by-step explanation:

Hello!

We can use the difference of square method.

<h2>Difference Of Squares (DOS)</h2>

The formula for the DOS is $(a + b)(a - b) = a^2 - b^2$

It is a simple way to factor polynomials.

The criteria:

Has to begin and end with a perfect square
The operation has to be subtraction

<h3>Factor:</h3>

$x^4 - 16$

Begins with a perfect square (x² * x²) and ends with a perfect square (4 * 4)

$(x^2 + 4)(x^2 - 4)$

Warning! Watch out, there may be another DOS!

$x^2 - 4$ is another DOS

$(x^2 + 4)(x + 2)(x - 2)$

The x² + 4 is not a DOS because the operation is addition.

The final factored form is $(x^2 + 4)(x + 2)(x - 2)$

8 0

2 years ago