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Cloud [144]
3 years ago
9

Miss Williams asked her class if they prefer doing their homework before school or after school if the ratio of students who pre

fer doing their homework before school to students who prefer doing homework after school at 7:15 what does the ratio 7/22 represent
Mathematics
2 answers:
fredd [130]3 years ago
6 0
IT means that the students prefer doing homework after school more than before school! 
<span>7 / 22 = 31.818181818182%
</span>
HOPE I HELPED!

~Tomas
yan [13]3 years ago
4 0
My answer for the problem will be 3
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Multiple choice 10 points
liubo4ka [24]

Answer:

f'(x) = 5    x<4

      = 2x    4<x<6

     = 4         x>6

Domain is all real numbers except 4 and 6

Step-by-step explanation:

We need to find the derivative of the piecewise function

f'(x) = 5    x<4

      = 2x    4≤x≤6

     = 4         x>6

Is the function continuous at 4

f(4-) = 5(4) - 6 = 20-6 = 14

f(4+) = 4^2 -2 = 16-2 = 14    

this is continuous, so there is no problem with the continuity here

Is the function continuous at

f(6-) = 6^2 -2 = 36-2 = 34

f(6+) = 4(6)+10 = 24+10 = 34

this is continuous, so there is no problem with the continuity here

Now we need to check the derivatives

f'(4-) = 5

f'(4+) = 8

This is not continuous, so we get a piecewise definition for the derivative excluding 4

f'(6-) =12

f'(6+) =4

This is not continuous, so we get a piecewise definition for the derivative excluding 6

7 0
3 years ago
two airplanes leave an airport at the same time and travel in opposite directions. one plane travels 70km/h slower than the othe
Nitella [24]

Answer:

<em>The speeds are 877 km/h and 947 km/h.</em>

Step-by-step explanation:

The slower plane travels at x km/h. The faster plane travels at (x + 70) km/h. The speed of separation is the sum of the speeds, (2x + 70) km/h.

They are 5472 km after 3 hours of travel.

speed = distance/time

2x + 70 = 5472/3

2x + 70 = 1824

2x = 1754

x = 877

The slower plane travels at 877 km/h.

x + 70 = 877 + 70 = 947

The faster plane travels at 947 km/h.

8 0
3 years ago
Please help me it's the lateral area of a cone along with the surface area
jekas [21]

Answer:

the lateral area of cone is L=A﹣πr2

the surface area of cone is

a = \pi \: r \sqrt{h^{2} + r {}^{2}  }

3 0
2 years ago
If tap and bre are supplementary and bre is its own complement, find the measure of tap. explain how you arrived at your answer
Pie
Supplementary angles are those whose sum is equal to 180° while those that are complementary are those whose sum is equal to 90°. Since, we are given that bre is the complement of itself, its measure can be calculated through the equation,
                           m∠bre + m∠bre = 90°
                                   m∠bre = 45°

Then, for the relationship of bre and tap, we have the equation,
                       m∠bre + m∠tap = 180°
                        45° + m∠tap = 180°
                                m∠tap = 135°

The measure of tap is equal to 135°. 
3 0
3 years ago
Alice purchased a house using a fixed rate mortgage. The annual interest rate is 5.6% compounded monthly for 30 years. The mortg
zhuklara [117]
Hi there
The formula of the present value of annuity ordinary is
Pv=pmt [(1-(1+r/k)^(-kn))÷(r/k)]
So we need to find the monthly payment pmt
Pmt=pv÷[(1-(1+r/k)^(-kn))÷(r/k)]
Pv present value 205000
R interest rate 0.056
K compounded monthly 12
N time 30

PMT=205,000÷((1−(1+0.056÷12)^(
−12×30))÷(0.056÷12))
=1,176.86...answer

Hope it helps
5 0
3 years ago
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