8x ≤ -32 Solve the inequality . x <

Please help for 10 points and help with both questions please.

DedPeter [7]

Question 21
Selling price = 18 + 18 x 36/100

Question 22

Discount price = 80 - 80x10/100

Selling price = discount price + discount price x 7/100

3 0

3 years ago

Read 2 more answers

HIII PLS HELP <br>PLS SHOW ME ALL UR WORKINGS THXX

vladimir1956 [14]

Answer:

Step-by-step explanation:

(i) y = 3x

m = 3

Slope of the line perpendicular to line (y = 3x) = -1/m = -1/3

Equation of the line through origin : y = mx

$y = \frac{-1}{3}x$

(ii) Form of the equation of all lines which are perpendicular to y = 3x is

$y = \frac{-1}{3}x +c$

c is y-intercept

8 0

2 years ago

Read 2 more answers

Tom had to write 3 pages for a book report. How many hours would it take him to write it if he wrote one-ninth of a page each ho

harkovskaia [24]

Answer:

If it takes that 1 hour to have 1 ninth of a page then I would think it takes 27 hours

Step-by-step explanation:

4 0

3 years ago

In the Reflecting Ball Game a ball can be launched from points 1, 2, 3, 4, 5 or 6 in the direction shown. When a ball hits a sid

natulia [17]

Answer:

$24\sqrt{2}$

Step-by-step explanation:

We can measure the number of diagonals each path takes:

From point 1, the path travels 6 diagonals, ending up at point D.

From point 2, the path travels 12 diagonals, ending back at point A.*

From point 3, the path travels 3 diagonals, ending at point B.

From point 4, the path travels 9 diagonals, ending at point C.

From point 6, the path travels 10 diagonals, ending at point D.

Since your question mentions each are 2 cm by 2 cm, this is equivalent to $2\sqrt{2}$ .

We can easily conclude that the maximum is 12 diagonals. Thus, Solving our equation gives: 12 * $2\sqrt{2}$ = $24\sqrt{2}$ as our final answer.

*Note: This path will pass through point five, that is, following the diagram you described. If this is true, then there is no need to solve the longest possible path for point 5.

5 0

3 years ago

As notas de dois alunos X e Y estão representadas no quadro abaixo. Por meio da variância, qual deles apresentou ser o mais regu

Reil [10]

Answer:

Aluno X

Step-by-step explanation:

A nota média para os alunos X e Y são, respectivamente:

$X_m=\frac{5+3+5+7}{4}=5 \\Y_m=\frac{4+9+4+3}{4}=5$

A variância é definida pela seguinte expressão:

$V=\frac{\sum(X_i-X_m)^2}{n-1}$

Onde n é o numero de termos, neste caso, n = 4.

As variâncias para cada aluno são:

$V_x=\frac{(5-5)^2+(3-5)^2+(5-5)^2+(7-5)^2}{4-1} \\V_x= 2.7\\V_y=\frac{(4-5)^2+(9-5)^2+(4-5)^2+(3-5)^2}{4-1} \\V_y= 7.3$

O aluno X apresentou uma variância menor do que o aluno Y em suas notas e, portanto, apresentou ser o mais regular.

6 0

2 years ago