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anygoal [31]
2 years ago
8

0%2B%209%28%20%5Cfrac%7B%20%5Ccos%5E%7B2%7D%5Cinfty%20%7D%7B%20%7B%20%5Csin%7D%5E%7B2%7D%20%5Cinfty%20%7D%20%29%7D%7D" id="TexFormula1" title=" \large{\bold \red{ \sum \limits_{8}^{4} {x}^{2} + 9( \frac{ \cos^{2}\infty }{ { \sin}^{2} \infty } )}}" alt=" \large{\bold \red{ \sum \limits_{8}^{4} {x}^{2} + 9( \frac{ \cos^{2}\infty }{ { \sin}^{2} \infty } )}}" align="absmiddle" class="latex-formula">
No spam allowed
Steps needed​
Mathematics
2 answers:
RSB [31]2 years ago
8 0

Answer:

i dont know what is this

Step-by-step explanation:

max2010maxim [7]2 years ago
6 0

Answer:

how did u do that the infinite thing

Step-by-step explanation:

h o w

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Which of the following lists of ordered pairs is a function?
Eduardwww [97]
To find if one is a function, you must see if the pattern is the same.
Domains (x) can not have two values
I forget what the y value is called, but there can be the same y- value for multiple      x - values

A. is not a function, because its ordered pairs are all over the place, and the value 4 in the x - value has two values assigned - 0 and 3, which makes it invalid.

B. may be a linear function. Its ordered pairs aren't jumping all over the place.
Both the x and y go up one for one, so the function could be y = x + 3

C. isn't because the x - value 2 has two values. Again, that makes this invalid.

D.  is invalid because there is two x - values for 2. 

Therefore, the answer is B.
3 0
3 years ago
Read 2 more answers
What is 5 multiplied by 2
koban [17]

Answer:

10

Step-by-step explanation:

5x2 to me is basically adding 5 twice.

5+5=10

5x2=10

4 0
3 years ago
Read 2 more answers
At another theater, workers have to cut a new trap door. The door can be no more than 137 square feet in area, with whole-number
otez555 [7]

Answer:

Step-by-step explanation:

Given:

trap door = 130 square feet.

1st item: 6ft 5in wide & 8ft 9in long

⇒ (6ft * 12 in) + 5 in & (8ft *12 in) + 9 in

⇒ 77inches by 105 inches

⇒ 8,085 square inches

2nd item: 13ft 4in wide & 7ft 8in long

⇒ (13ft * 12in)+ 4 in & (7ft *12in) + 8 in

⇒ 160 inches by 92 inches

⇒ 14,720 square inches

3rd item: 5ft 6in wide & 12ft 4in long

⇒ (5 ft * 12in) + 6 in & (12ft * 12in) + 4in

⇒ 66 inches by 148 inches

⇒ 9,768 square inches

130 square feet convert to square inches.

130 sq. ft * 144 sq.in/sq.ft = 18,720 sq. in

18,720 sq. in / 160 inches = 117 inches

Length = 160 inches ; Width = 117 inches

Perimeter = 2(160 + 117)

P = 2(277)

P = 554 inches

4 0
2 years ago
Can someone pretty please help me on these two questions​
mamaluj [8]
What is the original one of the graphs?
6 0
3 years ago
Suppose r⃗ (t)=cos(πt)i+sin(πt)j+5tkr→(t)=cos(πt)i+sin(πt)j+5tk represents the position of a particle on a helix, where zz is th
gtnhenbr [62]

Answer:

a) t = 4

b) v = pi j + 5 k

c) rt = 1i + (pi t) j + (20 +5t )k

Step-by-step explanation:

You have the following vector equation for the position of a particle:

r(t)=cos(\pi t)\hat{i}+sin(\pi t)\hat{j}+5t\hat{k}    (1)

(a) The height of the helix is given by the value of the third component of the position vector r, that is, the z-component.

For a height of 20 you have:

5t=20\\\\t=\frac{20}{5}=4

(b) The velocity of the particle is the derivative, in time, of the vector position:

v(t)=\frac{dr(t)}{dt}=-\pi sin(\pi t)\hat{i}+\pi cos(\pi t)\hat{j}+5\hat{k}    (2)

and for t=4 (height = 20):

v(t=4)=-\pi sin(\pi (4))\hat{i}+\pi cos(\pi (4))\hat{j}+5\hat{k}\\\\v(t=4)=-0\hat{i}+\pi\hat{j}+5\hat{k}

(c) The vector parametric equation of the tangent line is given by:

r_t(t)=r_o+vt      (3)

ro: position of the particle for t=4

r_o=cos(\pi (4))\hat{i}+sin(\pi (4))\hat{j}+20\hat{k}\\\\r_o=\hat{i}+0\hat{j}+20\hat{k}

Then you replace ro and v in the equation (3):

r_t=(1\hat{i}+20\hat{k})+(\pi \hat{j}+5\hat{k})t\\\\r_t=1\hat{i}+\pi t \hat{j}+(20+5t)\hat{k}

3 0
3 years ago
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