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3 years ago

Which of the following best describes the solution to the system of equations below?

Mathematics

1 answer:

liraira [26]3 years ago

5 0

For this case we have the following system of equations:

$6x + 3y = 6\\6x + 3y = 14$

We multiply the first equation by -1:

$-6x-3y = -6$

We have the following equivalent system:

$-6x-3y = -6\\6x + 3y = 14$

We add the equations:

$-6x + 6x-3y + 3y = -6 + 14\\0 = 8$

Equality is not fulfilled, so the system of equations has no solution.

Answer:

Option C

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Unit 4 Ratio, Proportions, & Percent

Sonja [21]

Answer:

???

Step-by-step explanation:

6 0

2 years ago

How many solutions does the system have? 8x + 2y = 14 (8x + 2y = 4

e-lub [12.9K]

Answer:

zero

Step-by-step explanation:

they are parallel once graphed

3 0

3 years ago

Help,anyone can help me do quetion.

3241004551 [841]

Answer:

(a) x = $128^{o}$

(b) x = $74^{o}$

Step-by-step explanation:

A. sum of angles in a polygon = (n - 2) 180

The polygon given is an irregular pentagon, where n = 5

So that;

sum of angles in a pentagon = (5 - 2) 180

= 3 x 180

= $540^{o}$

Thus,

x + 90 + 76 + 110 + 136 = $540^{o}$

x + 412 = $540^{o}$

x = $540^{o}$ - 412

x = $128^{o}$

B. The polygon given is an irregular pentagon, where n = 5.

Let the supplementary angle with angle 38 be represented by y,

y + 38 = 180

y = 180 - 38

= $142^{o}$

y = $142^{o}$

Let the supplementary angle with x be represented by z, so that;

z + 72 + 120 + 100 + 142 = $540^{o}$

z + 434 = $540^{o}$

z = $540^{o}$ - 434

= $106^{o}$

z = $106^{o}$

But, x + z = $180^{o}$

Then;

x + $106^{o}$ = $180^{o}$

x = $180^{o}$ - $106^{o}$

= $74^{o}$

x = $74^{o}$

7 0

3 years ago

A helicopter flying at an altitude of 600 ft dropped a package to a lifeboat. Use the formula t= - to find how many

Andre45 [30]

Answer:

6.1 seconds

Step-by-step explanation:

The correct question is

A helicopter flying at an altitude of 600 ft dropped a package to a lifeboat. Use the formula t= √h/4 to find how many seconds it takes for the package to reach the lifeboat. Round your answer to the nearest tenth of a second

we have

$t= \frac{\sqrt{h}}{4}$

substitute the value of h in the formula

$h=600\ ft$

$t= \frac{\sqrt{600}}{4}=6.1\ sec$

8 0

3 years ago

Please Help! (Math)(tanβ)

sertanlavr [38]

Answer:

Find the missing side first.

x = $\sqrt{12^2 - 7^2} = \sqrt{144 - 49} = \sqrt{ 95}$

1) tangent = opposite leg / adjacent leg

tanβ = √95/7
Correct choice is B

2) sine = opposite leg / hypotenuse

sinβ = √95/12
Correct choice is D

7 0

3 years ago