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2 years ago

Which equation represents a function?A. x=13B. x-12=34C. 2y=-12D. 2x-4x=7E. x/2=15

Mathematics

1 answer:

Mariulka [41]2 years ago

5 0

Solution:

From the given equations,

A function must pass the vertical line test but, equations with only x as the variable will not pass the vertical line test.

From the explanation above;

The graph above will pass the vertical line test.

Hence, the equation represents a function is

$2y=-12$

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WILL GIVE BRAINLIEST AND ALSO 5 STARS + 100 POINTS. ANSWER QUICK AND CORRECTLY WITH NO LINKS

aniked [119]

Answer:

x = -40

Step-by-step explanation:

Rewrite "(x - 4)/4" in a different way:

⇒ 8 + x/2 = (x - 4)/4 - 1

⇒ 8 + x/2 = x/4 - 4/4 - 1

Simplify the R.H.S:

⇒ 8 + x/2 = x/4 - 1 - 1

⇒ 8 + x/2 = x/4 - 2

Add 2 both sides and subtract x/2 both sides:

⇒ 8 + x/2 = x/4 - 2

⇒ 8 + 2 = x/4 - x/2

⇒ 10 = x/4 - 2x/4

Simplify the R.H.S:

⇒ 10 = x/4 - 2x/4

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Use cross multiplication:

⇒ 10 × 4 = -x

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4 0

2 years ago

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In parallelogram ABCD point K belongs to diagonal

Maksim231197 [3]

Answer:

$\dfrac{BE}{EC}=\dfrac{1}{3}.$

Step-by-step explanation:

Consider triangles BKE and DKA. In this triangles:

$\angle BKE=\angle DKA$ as vertical angles;
$\angle KBE=\angle KDA$ as alternate interior angles (lines BC and AD are parallel and BC is a transversal);
$\angle BEK=\angle DAK$ as alternate interior angles (lines BC and AD are parallel and BE is a transversal).

Thus triangles BKE and DKA are similar by AA theorem. Similar triangles have proportional sides lengths:

$\dfrac{BK}{KD}=\dfrac{BE}{AD}\Rightarrow \dfrac{1}{4}=\dfrac{BE}{AD}.$

Thus, $AD=4BE.$

Since AD=BC and BC=BE+CE, we have that 4BE=BE+EC, EC=3BE. Hence, the ratio BE to EC is

$\dfrac{BE}{EC}=\dfrac{BE}{3BE}=\dfrac{1}{3}.$

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3 years ago

The country recreation department cleared a 3/4 mile long walking trail in Washington Park. There will be a small sign every 1/1

dem82 [27]

We are given " The country recreation department cleared a 3/4 mile long walking trail in Washington Park."

Therefore total distance = 3/4 miles.

"There will be a small sign every 1/12 mile along the trail, including at the beginning and end of the trail. "

Distance of small sign = 1/12 mile.

We need to find the number of signs in 3/4 miles each of 1/12 miles.

In order to find the number of signs, we need to divide total distance by distance of a small sign.

3/4 ÷ 1/12

= 3/4 × 12/1 = 3 × 3

= 9 signs.

<h3>Therefore, 9 signs are needed.</h3>

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3 years ago

A box of oranges weighs 4 kg. If one orange weighs 80 g, how many oranges are in the boxes?

Katyanochek1 [597]

Answer:

There are 50 oranges in the box.

Step-by-step explanation:

Weight of box = 4 kg = 4000 g

Weight of 1 orange = 80 g

No. of oranges in the box = ?

No. of oranges in the box = Weight of the box / Weight of 1 orange

No. of oranges in the box = 4000 / 80 = 50 oranges.

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3 years ago

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20 points to whoever answers this first

taurus [48]

Answer:
71˚

Explanation:
To find the mean of a sum of numbers, you add all the numbers together, and then divide by how many numbers there are.
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4 years ago

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