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kenny6666 [7]
3 years ago
10

Solve the given initial-value problem. (2y + 2t − 3) dt + (8y + 2t − 1) dy = 0, y(−1) = 2.

Mathematics
1 answer:
katrin2010 [14]3 years ago
7 0

Answer:

holy ish  ive never seen anything like this in my life

Step-by-step explanation:

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Step-by-step explanation:

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A jet climbs at a steady rate at an angle of inclination of 0.5 degree during game off what will its he height be after a 2.2 km
Aneli [31]
A right triangle will be formed with 2.2 km as the hypotenuse, 0.5 degrees as the angle, and an unknown height (see attachment).

Recall the trigonmetric ratios sine, cosine, and tangent that can be used for right triangles.
Sin<span>θ = opposite side/hypotenuse
</span>Cos<span>θ = adjacent side/hypotenuse
</span>tan<span>θ = opposite side / adjacent side
</span>θ (theta) refers to the angle (not the right angle). In this case, θ is the given angle of 0.5°.

In this problem, you will use sine because there is a side opposite to the angle (the unknown side h) and the hypotenuse, and sine relates those two sides.

Let the variable h represent the unknown opposite side, the height.
sin(0.5°) = h / (2.2km)
h = (2.2km)sin(0.5<span>°)
h = 0.019 km

Hope I helped! If you have questions on any of the steps, please comment below.</span>

3 0
3 years ago
- Factorise 121y² - m²​
Otrada [13]

Answer:

\boxed{ \bold{ { \boxed{ \sf{(11y + m)(11y - m)}}}}}

Step-by-step explanation:

\sf{121 {y}^{2}  -  {m}^{2} }

\longrightarrow{ \sf{ {(11y)}^{2}  -  {(m)}^{2} }}

Use the formula of a² - b² = ( a + b ) ( a - b )

\longrightarrow{ \sf{(11y + m)(11y - m)}}

Hope I helped!

Best regards

6 0
3 years ago
The graph of the equation $x + 2y + 3 = 0$ is perpendicular to the graph of the equation $ax + 2y + 3 = 0$. What is the value of
insens350 [35]

Answer:

a = -4.

Step-by-step explanation:

If the are perpendicular then the slope of one graph will be - 1 / slope of the other.

Convert each equation to slope-intercept form:

x + 2y + 3 = 0

2y = = -x - 3

y = (-1/2)x - 3/2 (Slope/intercept form)

So the slope of the line perpendicular to this  will be - 1 / (-1/2) = 2.

Consider the other line:

ax + 2y + 3 = 0

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So the slope for this line    - a/2 and it equals 2.

-a/2 = 2

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a = -4 (answer).

5 0
3 years ago
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