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3 years ago

Can somebody help me on this please

Mathematics

1 answer:

Llana [10]3 years ago

5 0

It’s D because since c is to the power of -4 you would move it to the numerator so that it can be to the power of a positive number :)

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Identify the surface with the given vector equation. r(s, t) = s sin 4t, s2, s cos 4t

k0ka [10]

Answer:

Circular paraboloid

Step-by-step explanation:

Given ,

$r(s,t)=ssin4t,s^2,scos4t$

Here, these are the respective $x,y,z$ axes components.

Component along x axis $r_i : ssin4t$

Component along y axis $r_j : s^2$

Component along z axis $r_k : scos4t$

We see that , from the parameterised equation , $r_i^2+r_k^2=s^2sin^24t+s^2cos^24t\\r_i^2+r_k^2=s^2\\r_i^2+r_k^2=r_j$

This can also be written as :

$x^2+z^2=y$

This is similar to an equation of a parabola in 1 Dimension.

By fixing the value of z=0,

We get $y=x^2$ which is equation of a parabola curving towards the positive infinity of y-axis and in the x-y plane.

By fixing the value of x=0,

We get $y=z^2$ which is equation of a parabola curving towards positive infinity of y-axis and in the y-z plane.

Thus by fixing the values of x and z alternatively , we get a CIRCULAR PARABOLOID.

4 0

3 years ago

4. 3x + 7 + 5x = 16 + 7 then x =

VARVARA [1.3K]

4.3x+5x=16+7-(7)

9.3x=16

x= 1.72

give me a brainliest if possible. please.. tnx

8 0

3 years ago

Read 2 more answers

Courtney needs to find 2,495 ÷ 48. In which place should she write the first digit of the quotient?

Sunny_sXe [5.5K]

Hundred hundred hope this helps you

8 0

3 years ago

Logarithms are studied for which of the following reasons? A. To help in solving exponential equations when relating the bases

skad [1K]

Answer:

To help in solving exponential equations when relating the bases cannot be used

Step-by-step explanation:

Recall an equation of the form

$a^{x}=b\\$ from the expression $a^{x}\\$ , $a\\$ is the base and the power is ${x}\\$ .

$a\neq b\\$ it is impossible to carryout the operation since the bases are not equal.

This is where we implore the help of logarithm which help us to bring the base to a come base i.e using the property below

$loga^{x}=logb\\x=\frac{logb}{loga} \\$ .

Hence we can conclude that logarithm helps in solving equations when bases cannot easily be related.

7 0

3 years ago

Lakshmi has 11 more20-rupee notes than 10-rupee notes. If she has Rs 550 in total, how many notes of each kind does she have?

olganol [36]

Answer:

10rupee notes are 11

20rupee notes are 22

Step-by-step explanation:

Let 10-rupee note be x

20-rupee note will be x + 11

The equation will be

10x + 20(x + 11) = 550

10x + 20x + 220 = 550

30x = 330

x = 330/30 = 11 = 10rupee notes

y = 11+11 = 22 = 20rupee notes

6 0

3 years ago