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3 years ago

Shanna attends school for 1 week longer than 3/4 of yhe year. How many weeks in a year does shanna attend school

Mathematics

1 answer:

irga5000 [103]3 years ago

5 0

3/4 of 52 is 39 + 1 is 40.

So the answer is 40 weeks.

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el cobre tiene un punto de ebullicion de 2595°C y su temperatura de fusión es de 1083°C ¿cuál es la diferencia de temperaturas e

Vladimir79 [104]

Answer: 1512°C

Step-by-step explanation:

I will answer this in English:

The data we have: The boiling point is 2595°C and the fussion point is 1083°C

the difference between those points is equal to the direct difference between the temperatures:

Diff = 2595°C - 1083°C = 1512°C

5 0

4 years ago

Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage from a sample of lender

andreev551 [17]

Answer:

98% Confidence interval: (4.144 ,4.498)

Step-by-step explanation:

We are given the following in the question:

4.751, 4.373, 4.177, 4.676, 4.425, 4.228, 4.125, 4.251, 3.951, 4.192, 4.291, 4.414

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{51.854}{12} = 4.321$

Sum of squares of differences = 0.5602

$s = \sqrt{\dfrac{0.5602}{11}} = 0.226$

98% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 11 and}~\alpha_{0.02} = \pm 2.718$

$4.321 \pm 2.718(\frac{0.226}{\sqrt{12}} ) = 4.321 \pm 0.1773 = (4.144 ,4.498)$

3 0

4 years ago

Read 2 more answers

If the circumference if a circle is C inches which equation represents the diameter of the circle d .

Amanda [17]

Answer:

c=π⋅d , Where: c is the circumference of the circle, and d is the diameter of the circle. Explanation

6 0

3 years ago

If ABCD is dilated by a factor of 2 the coordinate of b would be? Will mark barinlyist.

ch4aika [34]

Answer:

B'(- 2, 2 )

Step-by-step explanation:

Assuming the dilatation is centred at the origin, then multiply the coordinates of B by the scale factor 2, that is

B(- 1, 1 ) → B'(2(- 1), 2(1) ) → B'(- 2, 2 )

8 0

3 years ago

Below is a scale drawing of a stage that Syla is designing. A rectangle with length 8 centimeters and width 5 centimeters. Using

serious [3.7K]

Answer:

Step-by-step explanation:

Given the dimension

Length of the rectangle = 8cm

Width = 5cm

Note that when the scale was 1:7, syla multiplied the width by a factor of 7 i.e 5*7 = 35m

If syla changes the the scale to 1 cm : 10 m for the rectangle, then the width of the shorter side will be multiplied by a factor of 10 due to the change in scale i.e;

5 * 10 = 50m

Hence the width of the new stage will be 50 m

6 0

3 years ago