40 less than twice victor savings

Tim spends about 1/3 of each weekday sleeping and about 7/24 of each weekday in school. What fraction of the weekday does Tim sp

White raven [17]

We have been given that Tim spends about 1/3 of each weekday sleeping and about 7/24 of each weekday in school. And we need to find what fraction of the weekday does Tim spend either sleeping or in school.

This means that we need to find the time he spends in sleeping when he is in the school.

Therefore, we have to add the time he spends in sleeping and the time he spends in school.

Therefore, required fraction is given by

$\frac{1}{3} +\frac{7}{24}$

Now in order to add the fractions, we have to make the denominator same.

Multiply the numerator and denominator of first fraction by 8 to make the same denominator.

$\frac{8}{24} +\frac{7}{24}$

Now, we have the same denominator hence, we can add the numerator

$\frac{8+7}{24}$

$\frac{15}{24}$

Therefore, Tim spends 15/24 hours each weekday sleeping in the school.

3 0

3 years ago

Does anyone know the answer to this , its math inequalities <br><br> 48 > -6x

faltersainse [42]

Answer:

$x > - 8$

Step-by-step explanation:

Swap the sides of the inequality and flip the inequality sign:

$- 6x < 48$

Divide both side of the inequality by -6 and flip the inequality sign:

$x > - 8$

3 0

3 years ago

Read 2 more answers

If represented in a stem and leaf plot, what would be the leaf of the number 329?

sdas [7]

Answer:

You can either do a back to back stem and leaf plot, where you would have double the values. In a normal stem and leaf plot you would just have one set of 3's where you would put all the values that start with 3 in that column. A back to back is the same but instead you would have two 3 values, where anything that is higher than 5 would be in the second value of 3, but anything lower would be in that first value of 3.

4 0

4 years ago

The difference between two numbers is 8. If

choli [55]

Answer:

y + 8

Step-by-step explanation:

Smaller number = y (Given)

$\because$ Larger number - smaller number = 8

$\therefore$ Larger number - y = 8

$\therefore$ Larger number = y + 8

Verification:

y + 8 - y = 8

6 0

3 years ago

There is another way to rank the difficulty of test questions using Networks: Each student gives scores for each problem, then w

Vlad [161]

Answer:

Step-by-step explanation:

Truly, on a single student level, the Massey method can be applied i.e. problems are ranked according to their level of difficulty for a single student.

Let us say there are 4 problems P1, P2, P3, P4 set in an exam where a student has to solve any two.

Assuming student 1 solves and scores more in P1 than in P2, r1>r2

student 2 more in P1 than P4 r1>r4

student 3 more in P2 than P4 r2>r4

student 4 more in P4 than P3 r4>r3

student 5 more in P2 than P3 r2>r3

and such many more cases.

then the Massey's model can be written as

P1 P2 P3 P4

\begin{bmatrix} 1 &-1 &0 &0\\ 1 &-1 &0 &0 \\ 0 &1 & 0 &-1 \\ 0 & 0 &-1 & 1 \\ 0 & 1 & -1 & 0 \end{bmatrix}.

\times \begin{bmatrix}r1 \\r2 \\r3 \\r4 \end{bmatrix} =

\begin{bmatrix}y_{1} \\ y_{2} \\ y_{3} \\ y_{4}\\ y_{5}\end{bmatrix}.

If Pi gives more score than Pj, the entry below Pi shall be 1 and below Pj shall be -1.

The rest of the entries shall be 0.

r1,r2,r3,r4,r5 are ranks .

There may be more rows depending upon more combination of 2 problems.

Should in case more than one student solve the same combination and get scores in the same order, for instance, 12 students solve P1 and P2, for 7 of them r1>r2, then their scores can be averaged.

Normally, such systems are overdetermined, i.e., more rows than the number of unknowns, then it is solved by the Least square method ., as there shall be no a solution with least error is found out.

The overall ranking, in reverse order, shall give the ranking according to increasing difficulty.

7 0

4 years ago