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Naily [24]
3 years ago
15

What 3+3+3+3+3-2????

Mathematics
2 answers:
777dan777 [17]3 years ago
8 0

Answer:

answer is 13

Step-by-step explanation:

3+3+3+3+3-2=13

dalvyx [7]3 years ago
5 0
He lying bro it’s actually fish ^^
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A radio telescope has a parabolic surface, as shown below.
krek1111 [17]
OK, so the graph is a parabola, with points x=0,y=0; x=6,y=-9; and x=12,y=0

Because the roots of the equation are 0 and 12, we know the formula is therefore of the form

y = ax(x - 12), for some a

So put in x = 6

-9 = 6a(-6)

9 = 36a

a = 1/4

So the parabola has a curve y = x(x-12) / 4, which can also be written y = 0.25x² - 3x

The gradient of this is dy/dx = 0.5x - 3

The key property of a parabolic dish is that it focuses radio waves travelling parallel to the y axis to a single point. So we should arrive at the same focal point no matter what point we chose to look at. So we can pick any point we like - e.g. the point x = 4, y = -8

Gradient of the parabolic mirror at x = 4 is -1

So the gradient of the normal to the mirror at x = 4 is therefore 1.

Radio waves initially travelling vertically downwards are reflected about the normal - which has a gradient of 1, so they're reflected so that they are travelling horizontally. So they arrive parallel to the y axis, and leave parallel to the x axis.

So the focal point is at y = -8, i.e. 1 metre above the back of the dish.
5 0
2 years ago
It takes la’mya 4 hours to knit 2 yards of a blanket . How many yards can she knit in one hour ?
shtirl [24]

Answer:

she can knit 1/2 a yard of a blanket in 1 hour.

So it would look like this

1/2 a yard of blanket

-----

1 hour

It would be, she can knit one half of a yard of blanket in one hour

one half over oner hour

6 0
3 years ago
These trapezoids are similar. Which of the following is the correct similarity statement
LuckyWell [14K]

Check the picture below.

4 0
3 years ago
Answers: A, B, C, D please answer right
soldier1979 [14.2K]

Answer:

Triangle C

Step-by-step explanation:

Because triangle C is in the same orientation, meaning it was not flipped, it is a simple translation.

3 0
2 years ago
What should I buy? A study conducted by the Pew Research Center reported that 58% of cell phone owners used their phones inside
White raven [17]

Answer:

Buy My Shlong

Step-by-step explanation:

Eat my virginia

5 0
2 years ago
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