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3 years ago

Suppose the equation of a line is 2x − 4y = − 8. Which coordinate pair represents the y-intercept?

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

4 0

Answer:

(0,2)

Step-by-step explanation:

Convert the equation to y=mx+b.

You get y=1/2+2.

Since x is always 0 in your y-intercept and the y value is equal to b, you get (0,2) as your coordinate pair.

Amanda [17]3 years ago

4 0

Answer:

(0,2)

Step-by-step explanation:

Given equation is :

2x-4y=-8

y=mx+b is slope-intercept form of equation of a line where m denotes slope and b denotes y-intercept.

We have to transform given equation into slope intercept form.

2x-4y=-8

Adding -2x to both sides of above equation,we get

-2x+2x-4y=-2x-8

0-4y=-2x-8

-4y=-2x-8

Dividing by -4 to both sides of above equation,we get

-4y / -4=(-2x-8) / -4

y= 1/2x+2 is slope intercept form of given equation where slope is 1/2 and y-intercept is 2.

y-intercept is a point where x is zero.

Hence ,(0,2) represents the y-intercept of given equation.

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7. y-2 = (x+3) 4 2 X - TO 12 4

drek231 [11]

Answer:

y = -24 + -2x + 2x2

Step-by-step explanation:

Simplifying:

y = 2(x + 3)(x + -4)

reorder the terms:

y = 2(3 + x)(x + -4)

multiply (3 + x) * (-4 + x)

y = 2(3(-4 + x) + x(-4 + x))

y = 2((-4 * 3 + x * 3) + x(-4 + x))

y = 2((-12 + 3x) + x(-4 + x))

y = 2(-12 + 3x + (-4 * x + x * x))

y = 2(-12 + 3x + (-4x + x2))

Combine like terms 3x + -4x = -1x

y = 2(-12 + -1x + x2)

y = (-12 * 2 + -1x * 2 + x2 * 2)

y = (-24 + -2x + 2x2)

Solving:

y = -24 + -2x + 2x2

solving for variable 'y'

Move all terms containing y to the left, all other terms to the right.

Simplifying:

y = -24 + -2x + 2x2

8 0

3 years ago

Please help me. I will love u forever if u do <333

Anvisha [2.4K]

Answer:

61% is a reasonable choice

Step-by-step explanation:

The probability of a strike is 79% or 0.79

=> Independently, the probability of 2 consecutive strikes:

P = 0.79 x 0.79 = 0.6241 ~ 61%

3 0

3 years ago

Round 14,883 to the underlined place value.

nalin [4]

Answer: the answer when rounded would be 15000.... BUT the 4 in 14883 would be the underlined number.

Step-by-step explanation:

I took a test with this question

8 0

3 years ago

If my radius is 10 what is my circumference

Pavlova-9 [17]

Answer:

Radius, r = 10 cm

Radius, r = 10 cmWe know, Circumference = 2πr=2×π×10=20π cm

The circumference of the circle is

20π cm or about 62.8 cm.

Here's how I did it:

The formula for a circumference of a circle is 2πr , where r is the radius. We can plug our known value of the radius ( 10 cm) into the formula and solve.

2π 10=20π cm or about 62.8 cm.

Step-by-step explanation:

The radius is half as long as the diameter, so the diameter can be thought of as 2r. Keeping this in mind, you can write down the formula for finding the circumference of a circle given the radius: C = 2πr. In this formula, "r" represents the radius of the circle.

Hope it is helpful....

6 0

2 years ago

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 45.0 and 55.

ra1l [238]

Answer:

0.025

Step-by-step explanation:

Hello!

Given that the classes are uniformly distributed between 45.0 and 55.0 minutes, the propability distribution will be:

$P(x)=\frac{1}{55-45} = \frac{1}{10}$

Now, we are looking for a probability P(51.5<x<51.75) which can be computed as:

$P(51.5$

Therefore:

P(51.5<x<51.75) = 0.025

P(51.5<x<51.75) = 2.5%

I strongly believe that the answer for both questions have the same answer, I believe this because there is no additional info for a given class or selecting a class. I think both probabilities are the same.

7 0

3 years ago