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3 years ago

Hello i need some help with these I'm not the best at math thx

Mathematics

2 answers:

lana [24]3 years ago

8 0

The first answer is D and the second answer is B.

saul85 [17]3 years ago

7 0

Answer For the First One:

D, 51.3%

Step-by-step explanation:

The total number of students that ordered popcorn was 80 and 80 is 51.3% of 156 (the total number of students)!

Answer For the Second One:

C, It was reflected over the X-axis

Explanation:

If you just flip the DEF backwards over the x-axis it makes the GHI shape!

Hope this helps! :)

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On a fair 6-sided die each number has an equal probability p of being rolled. When a fair die is rolled n times, the most likely

Feliz [49]

A 1.5 standard deviation above the mean is
np + 1.5 <span>√(np(1-p))

We are given with
np = 200
p = 200/n
The standard deviation is
</span><span>√200(1-200/n))

Substituting
200 + 1.5 </span>√200(1-200/n))
By inspection, if the value of n is 200, then the radical will result to the value of 1. Only by increasing the value of n greater than 200 will the radical result to a value of less than 1 and decreasing the spread of the mean.
The answer is
the minimum is 201
the maximum is infinity

3 0

2 years ago

Please help question is below

mixas84 [53]

Answer:

exponential function

Step-by-step explanation:

geometric sequence

An = A1 * r^(n-1)

common ratio is 2

A1 = 1st term

nagwa

mthway

6 0

1 year ago

The daily cost of producing x high performance wheels for racing is given by the following function, where no more than 100 whe

WINSTONCH [101]

So all you need to do if find the min of the function:

f(x)=0.04x^3-4x^2-176x
f'(x)=0.12x^2-8x-176
The only zero for this is x=84.105 <---first
Plug this into f(x) to get f(84.105)=-19300 <---second

4 0

2 years ago

A table is on sale for $403, which is 38% less than the regular price. what is the regular price

Nesterboy [21]

1060.5263157 etc your teacher prob tells you to round

4 0

3 years ago

A parabola with the vertex at (1.5, 12.5) inscribes a segment of length 5 on x-axis. What is the area of the triangle formed by

damaskus [11]

Answer:

20 units²

Step-by-step explanation:

The x-intercepts are symmetrically located around the x-coordinate of the vertex, so are at

1.5 ± 5/2 = {-1, 4}

Using one of these we can find the unknown parameter "a" in the parabola's equation (in vertex form) ...

0 = a(4 -1.5)² +12.5

0 = 6.25a +12.5 . . . . . simplify

0 = a +2 . . . . . . . . . . . divide by 6.25

-2 = a

Then the standard-form equation of the parabola is ...

y = -2(x -1.5)² +12.5 = -2(x² -3x +2.25) +12.5

y = -2x² +6x +8

This tells us the y-intercept is 8. Then the relevant triangle has a base of 5 units and a height of 8. Its area is given by the formula ...

A = (1/2)bh = (1/2)(5)(8) = 20 . . . . units²

5 0

2 years ago