What is the formula of LSD in a cuboid?​

Answers

Answer 1
Answer:

Answer:  The volume of a cuboid is given by the formula V = LWH, and the surface area of a cuboid is given by the formula SA = 2lh + 2wh + 2lw where l = length, w = width, and h = height.

And i was just learning this a few days back lol


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Figure PQR is an equilateral triangle with a semicircle added to its base.What is the perimeter of figure PQR? Use 3.14 to approximate pi.

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Perimeter of the figure PQR is 91.42 cm.

What is Perimeter?

Perimeter of a straight sided figures or objects is the total length of it's boundary

Given figure PQR consists of an equilateral triangle and a semicircle.

Length of side of an equilateral triangle = 20 cm

Perimeter of equilateral triangle = sum of the length of three sides

Perimeter = 3 × 20 = 60 cm

Now circumference of a circle = 2πr, where r is the radius.

Here there is a semicircle, which is the half of the circle.

Circumference of semicircle = 2πr / 2 = πr

Here Diameter = 20 cm

Radius = 20 / 2 = 10 cm

Perimeter of semicircle = 10π = 31.42 cm

Total perimeter = 60 cm + 31.42 cm = 91.42 cm

Hence the total perimeter is 91.42 cm.

Learn more about Perimeter here :

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71.4. you add the two faces of the triangle with half of the circumference of a circle of radius 10  

Which statements are true for the functions g(x) = x2 and h(x) = –x2 ? Check all that apply.For any value of x, g(x) will always be greater than h(x).
For any value of x, h(x) will always be greater than g(x).
g(x) > h(x) for x = -1.
g(x) < h(x) for x = 3.
For positive values of x, g(x) > h(x).
For negative values of x, g(x) > h(x).

Answers

if x=0 then they have same value

1st and 2nd options are out

for x=-1
g(-1)=1
h(-1)=-1
3rd is true

4th
false

for all values except zero, g(x)>h(x)


correct ones are

g(x) > h(x) for x = -1.
For positive values of x, g(x) > h(x).
For negative values of x, g(x) > h(x).

Answer: g(x) > h(x) for x = -1.

For positive values of x, g(x) > h(x).  

For negative values of x, g(x) > h(x).

Step-by-step explanation:

Given functions:g(x)=x^2 and h(x)=-x^2

When x=0, g(0)=0^2=0 and h(0)=-0^2=0

∴ at x=0, g(x)=h(0)

Therefore the statements "For any value of x, g(x) will always be greater than h(x)." and "For any value of x, h(x) will always be greater than g(x)." are not true.

When x=-1, g(-1)=(-1)^2=1 and h(-1)=-(-1)^2=-1

∴g(x) > h(x) for x = -1.  ......................(1)

When x=3, g(3)=(3)^2=9 and h(3)=-(3)^2=--9

g(x) > h(x) for x = 3....................(2)

⇒g(x) < h(x) for x = 3. is not true.

From (1) and (2),

For positive values of x, g(x) > h(x).  

For negative values of x, g(x) > h(x).

Prove that 1+cosA/sinA + sinA/1+cosA=2cosecA

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(1+cos\alpha)/(sin\alpha)+(sin\alpha)/(1+cos\alpha)=2cosec\alpha\n\nL=((1+cos\alpha)(1+cos\alpha)+sin\alpha\cdot sin\alpha)/(sin\alpha(1+cos\alpha))=(1+2cos\alpha+cos^2\alpha+sin^2\alpha)/(sin\alpha(1+cos\alpha))\n\n=(1+2cos\alpha+1)/(sin\alpha(1+cos\alpha))=(2+2cos\alpha)/(sin\alpha(1+cos\alpha))=(2(1+cos\alpha))/(sin\alpha(1+cos\alpha))\n\n=(2)/(sin\alpha)=2\cdot(1)/(sin\alpha)=2cosec\alpha=R

If 4/3x - 1/2 = 0 then x=

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4/3x - 1/2 = 0   Given
4/3x = 1/2   Add 1/2 to both sides
x = 3/8   Multiply each side by 3/4

It is important when doing equations like these to remember that you need to multiply by the reciprocal of the fraction, not divide by it. For example, if another you have 1/2x = 1, you need to multiply by 2/1 or 2, not divide by 1/2.

What is 14,000,000 in scientific notation?

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Your final answer is 1.4 × 10 to the power of 7.

What is the solution of the equation? 4.6x-3.7=14.7

Answers

To find the answer first you do 14.7 + 3.7 and you get 18.4

The last step is to do 18.4 divided by 4.6 and you get the final answer which is 4.

The answer is 4.

Answer:

Step-by-step explanation:

The equation starts out as 4.8x - 3.7 = 14.7,

Then you have to isolate the x variable to get: 4.8x = 14.7 + 3.7

It is + 3.7 because you have to do the inverse operation

Finally the equation becomes 4.8x = 18.4

So x = 3.833333333 repeating