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3 years ago

Plz answer asap ! i would really appreciate it!

Mathematics

1 answer:

vitfil [10]3 years ago

4 0

Answer:

0.5

4π

Step-by-step explanation:

One cycle resets the process. For this to happen, it must go up, then down to where it started, down more, and then up to where it started. This only goes halfway there, so our first answer is 0.5

The amplitude is the difference in height between the base and the top/bottom, and this is 2.

The period is how long it takes to complete one cycle -- it's halfway at 2π, so it would be fully there at 4π

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Proportional fraction to 1/4

Pavel [41]

A proportional fraction to 1/4

1 * 1 1
- = -
4 * 4 16

Also known as 1/16

7 0

3 years ago

What is the value of m, if the equation my2+2y−4=0 has exactly one root?

stich3 [128]

Answer:

$m=\frac{-1}{4}$

Step-by-step explanation:

A quadratic equation has one root if the discriminant is 0.

That is we need $b^2-4ac=0$ for this particular question.

Compare the following to find $a,b, \text{ and } c$ :

$ax^2+bx+c=0$

$my^2+2y-4=0$

The variable $x$ is representative of the variable $y$ here.

$a=m$

$b=2$

$c=-4$

Plug in into $b^2-4ac=0$ :

$(2)^2-4(m)(-4)=0$

$4+16m=0$

Subtract 4 on both sides:

$16m=-4$

Divide both sides by 16:

$m=\frac{-4}{16}$

Reduce:

$m=\frac{-1}{4}$

6 0

3 years ago

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Two cities have nearly the same north-south line of 117 degrees Upper W. The latitude of the first city is 29 degrees Upper N c

Mariulka [41]

Answer:

1117 km

Step-by-step explanation:

Because the two cities are approximately on the same North-South line, they are on the same longitude. The difference in their latitudes is 39° - 29° = 10°. We are subtracting because they are both in the northern hemisphere. The distance between them is

$\dfrac{10}{360}\times2\pi\times6400 \text{ km} = 1117 \text{ km}$

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3 years ago

Use the figure below to find the distance across the river (IK)

Black_prince [1.1K]

Step-by-step explanation:

ΔJLK = ΔNLM ( vertically opposite Δ)

ΔJKL = ΔNML ( each 90° )

so,

triangle JKL = triangle NML (by AA similarity)

JK / KL = NM / ML

JK / 21m = 42m / 49m

JK = 42 × 21 ÷ 49

JK = 18m

<h2>_______________</h2><h2>FOLLOW ME</h2>

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3 years ago

Question

yuradex [85]

Answer:

(30, ∞)

Step-by-step explanation:

b – 27 > 3

Add 27 to both sides

b > 30

In interval notation

(30, ∞)

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3 years ago

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