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2 years ago

Please help me..asap

Mathematics

1 answer:

Ivenika [448]2 years ago

6 0

Answer:

the first one obviously isnt random
the second one is selective then random
the third one is also selective
the fourth one is random

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If 2x squared + 8y = 121. 5, what is x

mezya [45]

X=30.4-2y
(step by step) :

5 0

3 years ago

Find the equation for the plane through the points Upper P 0 (4 comma 5 comma negative 3 )P0(4,5,−3), Upper Q 0 (1 comma 4 comm

alexira [117]

Answer:

4x -4y +z = -7

Step-by-step explanation:

The direction vector will be perpendicular to any/all vectors between the given points. It can be found, for example, using the cross product:

d = (P0Q0) × (P0R0) = (-3, -1, 8) × (-4, -3, 4)

The cross product can be computed by hand or by any of a number of calculators or web tools. Here it will be ...

d = (20, -20, 5)

These can be the coefficients of x, y, and z in the plane equation. However, the equation is better written using coefficients that are mutually prime, so we choose the direction vector to be ...

d = (4, -4, 1)

The constant C in the plane equation

d·(x, y, z) = C

will be the dot product of this direction vector (d) any any of the given points. Using R0, we find the constant to be ...

C = (4, -4, 1)·(0, 2, 1) = 4·0 +(-4)·2 +1·1 = -8+1 = -7

so, the plane equation is ...

4x -4y +z = -7

6 0

3 years ago

11 of 16

love history [14]

Answer:

Step-by-step explanation:

This is a geometric sequence; we know that because of the words "common ratio." The general formula for a geometric sequence is

a(n) = a(1)*r^(n - 1), where r is the common ratio.

Here, a(1) = 1, r = 1/3, and so

a(1) = 1 (given)

a(2) = 1/3 (this is a(1) multiplied by 1/3)

a(3) = 1/9 (this is a(2) multiplied by 1/3)

a(4) = 1/27

a(5) = 1/81

8 0

3 years ago

PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS ASAP

marshall27 [118]

Answer:

(0,6)

Step-by-step explanation:

First, deal with the reflection. Reflecting the triangle over the x axis will reflect it vertically into the upper right quadrant. Because it is reflected vertically, the x values of the vertices will not change and the y values will be the negative of whatever value they are originally. If the coordinates of each vertex are (x,y), you can easily find their new location by changing it to (x,-y). After the reflection, the coordinates of the vertices are as follows:

A = (2,6) [originally (2,-6)]

B = (2,1) [originally (2,-1)]

C = (5,6) [originally (5,-6)]

Now, deal with the translation. A translation of -5 units horizontally means that the triangle will be moving 5 units to the left. The y values will be unaffected by the translation. To find the new coordinates, subtract 5 from the x values of the coordinates after the reflection.

A = (-3,6)

B = (-3,1)

C = (0,6)

Therefore, the answer is (0,6).

5 0

2 years ago

Use an identity to solve the equation on the interval [0,2pi) sin x cos x = -1/4 x=

dolphi86 [110]

Answer:

<h3>The solution of the given equation is x = 105 °∈ ( 0 , 2pi)</h3>

Step-by-step explanation:

Step(i):-

Given equation is sin x cos x = -1/4

$2(2sinxcosx) = -1$

we know that trigonometry formula

2 sin x cos x = sin 2x

2 ( sin 2 x) = -1

sin2x = -1/2

Step(ii):-

sin2x = $\frac{-1}{2} = sin (\pi +\frac{\pi}{6}$

<h2> sin2x = sin 210</h2><h2> 2x = 7π/6</h2><h2> 2x = 210°</h2><h3> x = 105 °</h3><h3>The solution of the given equation is x = 105 °∈ ( 0 , 2pi)</h3>

4 0

3 years ago