1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erica [24]
3 years ago
6

if the school day starts at 8:50am and ends at 3:15pm. There is a playtime break at 10:40am until 10:55am and a lunch break from

12 noon until 1:05pm. How long is a school day
Mathematics
1 answer:
geniusboy [140]3 years ago
4 0
Lets add together breaks and all day long:
all day: from 8:50 to 15:15: that is 6 hours and 25 minutes, that is in minutes:
all day = 6*60 + 25 = 385 minutes

breaks:
play: 10:40 to 10:55: that is 15 minutes
lunch: 12:00 to 1:05: that is one hour and 5 minutes, or 65 minutes
breaks = 15 + 65 = 80 minutes

So the school day of work is: 385 - 80 = 305 minutes
That is 5 hours and 5 minutes

Remember, an hour is 60 mins.

You might be interested in
If a 12 sided regular polygon rotates about its center at which angle of rotation will the image of the polygon coinside with th
Amanda [17]

Answer: 30 degrees

This is the minimum amount of rotation.

Why this value? Well because 360/12 = 30

Consider a triangle with 3 sides. Specifically I mean an equilateral triangle. We can rotate it 120 degrees to have it line up with itself. Now notice that 360/3 = 120.

For a square, we can rotate it 90 degrees and we can say 360/4 = 90

So the general rule is that the minimum angle of rotation is 360/n, where n is the number of sides. This rule only works for regular polygons. Regular polygons have the same side length and the same angle measure (the side and angle measure won't necessarily be equal).

So going back to this 12 sided dodecagon, we have n = 12 and 360/n = 360/12 = 30 as the minimum angle of rotation. Each 30 degree rotation will have the polygon match up perfectly with its old image. The preimage and image will be identical.

6 0
3 years ago
The diameter of a circle is 8 inches.what us the area
Alina [70]
A = 1/4 * (pi) * d^2
A = 1/4 * (pi) * 8^2
A = 1/4 * (pi) * 64
A = 1/4(64) * (pi)
A = 64/4 * (pi)
A = 16 (pi) in^2
Your answer is 16 pi in^2
~Silver
5 0
3 years ago
Read 2 more answers
The sum of two numbers is 58. The larger number is 6 more than the smaller number. What are the numbers?
kenny6666 [7]

Answer:

Numbers are 32, and 26.

Step-by-step explanation:

58 / 2 = 29

29 + 3 = 32 (large number)

29 - 3 = 26 (small number)

8 0
3 years ago
Read 2 more answers
Determine whether the set of vectors is a basis for ℛ3. Given the set of vectors , decide which of the following statements is t
schepotkina [342]

Answer:

(A) Set A is linearly independent and spans R^3. Set is a basis for R^3.

Step-by-Step Explanation

<u>Definition (Linear Independence)</u>

A set of vectors is said to be linearly independent if at least one of the vectors can be written as a linear combination of the others. The identity matrix is linearly independent.

<u>Definition (Span of a Set of Vectors)</u>

The Span of a set of vectors is the set of all linear combinations of the vectors.

<u>Definition (A Basis of a Subspace).</u>

A subset B of a vector space V is called a basis if: (1)B is linearly independent, and; (2) B is a spanning set of V.

Given the set of vectors  A= \left(\begin{array}{[c][c][c][c]}1 & 0 & 0 & 0\\ 0 & 1 & 0 & 1\\ 0 & 0 & 1 & 1\end{array} \right) , we are to decide which of the given statements is true:

In Matrix A= \left(\begin{array}{[c][c][c][c]}(1) & 0 & 0 & 0\\ 0 & (1) & 0 & 1\\ 0 & 0 & (1) & 1\end{array} \right) , the circled numbers are the pivots. There are 3 pivots in this case. By the theorem that The Row Rank=Column Rank of a Matrix, the column rank of A is 3. Thus there are 3 linearly independent columns of A and one linearly dependent column. R^3 has a dimension of 3, thus any 3 linearly independent vectors will span it. We conclude thus that the columns of A spans R^3.

Therefore Set A is linearly independent and spans R^3. Thus it is basis for R^3.

8 0
3 years ago
An engineer was supposed to draw a line exactly 7/10 centimeters long. An error was made, and he drew the line 9/10 centimeters
Paha777 [63]

Answer:

2/10 or 1/5 if you want it simplified

Step-by-step explanation:

9/10 is basically 9 and 7/10 is 7 so 9 - 7 is 2 and we need to add the /10 back so it's 2/10 or 1/5

7 0
2 years ago
Read 2 more answers
Other questions:
  • 6x^2-9x-6+4x factor by grouping, if the polynomial has a common factor then factor it out first. Thanks
    12·1 answer
  • The length of a rectangle is 3 m less than twice the width, and the area of the rectangle is 14 m2 . find the dimensions of the
    11·1 answer
  • Which property is illustrated by the statement?
    13·2 answers
  • What is the area of the piece of red paper after the hole for
    10·2 answers
  • 5 ordinary quarters and have a quarter with two heads are placed in a hat. one quarter selected at random and tossed twice. if t
    5·1 answer
  • Add.<br> 8/9x +11/15x<br> please help
    15·1 answer
  • The factor equivalent to 10/12
    5·2 answers
  • The supermarket has 12 aisles. 9 of the aisles are empty. What percentage of the aisles are
    12·2 answers
  • 1. Megan is in charge of creating a five-digit code to lock and unlock a secure room. She can use any digit from 0 through 9, an
    15·1 answer
  • A and b are right I just need help for c
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!