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podryga [215]
3 years ago
13

Evaluate the problem 3.14(6 × 4 + 6^2)

Mathematics
2 answers:
omeli [17]3 years ago
7 0
The answer is 188.4.
diamong [38]3 years ago
3 0

Answer:

188.4

Step-by-step explanation:

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Anthony, William, Christopher and Mathew are sharing 4 hats: red, green blue and gold. If Anthony doesn't wear red, william does
pogonyaev
3 ways
1st way: Anthony- Gold William-Red Christopher-Green Mathew-Blue

2nd way: Anthony- Blue William-Gold Christopher-Red Mathew-Green

3rd way: Anthony-Green William-Blue Christopher-Gold Mathew-Red
7 0
2 years ago
A baker had 1,128 cookies. She put them all in bags, with 24 cookies in each bag. What is the total number of bags that she used
Rainbow [258]
1,128 divided by 24 = 47 bags. To make sure this answer is right you can multiply 24 and 47 and you get 1,128
7 0
3 years ago
My family and I are so confused on this! Help please!
-BARSIC- [3]

Answer:

10) Correct

11) Each row is equal to 12 when you multiply them together.

12) 24

Step-by-step explanation:

12) You multiply 4*3*2 to get the volume of 24, which is also the number of cubes needed to make the shape.

<u>Please</u><u> give</u><u> brainliest</u><u> if</u><u> I</u><u> helped</u><u>!</u><u> </u><u>:</u><u>)</u>

3 0
2 years ago
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
Please help! *Math (10 pts)*
Allisa [31]

It's linear

If you evaluate x when it's 0 you'll get the cut in y, that means the function will pass on (0,7)

The formula for linear functions is y=mx +b

In this case b is 7

M=7-5/0+1

M=2

Now you just write the function down, it would be

F(x) =2x + 7

6 0
3 years ago
Read 2 more answers
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