Ask question

Ask question

All categories

Free_Kalibri [48]

3 years ago

5

The distance time graph represents a journey made by Joe what did you do at 10 minute at what speed was Joe moving for the last

30 minutes of the journey

1 answer:

Nikolay [14]3 years ago

7 0

Answer:

a)At 10min= Jo arrived at the destination and prepare to return.

b)8km/h

Step-by-step explanation:

speed = distance/time 30/3.75=8

Hope this helps

You might be interested in

What is system of equations for (6,5)

worty [1.4K]

Answer:

no clue

Step-by-step explanation:

4 0

3 years ago

Kelly works two jobs. She usually works at a retail store for 8 hours during the day and is paid $12.90 per hour by the store. I

quester [9]

Answer:

i believe its 12.55

Step-by-step explanation:

if you add both number, 12.90 and 12.20, then divide by 2.

you'll will gain the same result

6 0

3 years ago

If f(x)=<br> =<br> (3+x)<br> (x-3)<br> what is f(a + 2)?

Butoxors [25]

(3+a+2) (a+2-3)
(5+a) (a-1)
5a-5+a^2-a
Rearrange and combine like terms
a^2 +4a-5

3 0

2 years ago

What is the slope of a line that is perpendicular to the line

Anika [276]

Answer:

- 1 half or -1/2

Step-by-step explanation:

perpendicular slope is flipped and negative

3 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

3 years ago