Answer:
-20 units??
Step-by-step explanation:
Answer:
See explanation below.
Step-by-step explanation:
On the left side of the number line, label it 0. This is Wayne's starting place before he has gone anywhere. On the furthest right of the number line, label it 4 km. This is the total distance he has hiked.
Now divide the space between 0 and 4 into 4 equal parts. This represents each kilometer he hiked.
Divide each of the four sections into 3 equal parts. This means you'll have a total of 12 sections between 0 and 4. Each of these sections is 1/3 of a kilometer. So 4 sections will be 4/3. From zero count 4 sections. Then mark it as 4/3 and break.
Now count from 0, 10 sections or 10/3. Mark this as 10/3 and mark it water break.
Answer:
112
Step-by-step explanation:
use substitution method:
make 2 equations:
44 = 2(l+w) l=w+6
plug in l:
44 = 2 (w+6+w)
combine like terms:
44 = 2(2w+6)
distribute:
44 = 4w + 12
get 4w alone:
44 = 4w + 12
-12 -12
__________
32 = 4w
Divide to get w alone :
32 = 4w
__ __
4 4
w=8
plug w in:
l = w + 6
l = 8 + 6
get l alone on one side:
l = 14
plug l and w in an are equation:
14 x 8 = 112
Answer:
x = -1/5 = -0.5
Step-by-step explanation:
9(x + 5)2 = 81
Answer:
The expected value for a student to spend on lunch each day = $5.18
Step-by-step explanation:
Given the data:
Number of students______$ spent
2 students______________$10
1 student________________$8
12 students______________$6
23 students______________$5
8 students_______________$4
4 students_______________$3
Sample size, n = 50.
Let's first find the value on each amount spent with the formula:
Therefore,
For $10:
For $8:
l
For $6:
For $5:
For $4:
For $3:
To find the expected value a student spends on lunch each day, let's add all the values together.
Expected value =
$0.4 + $0.16 + 1.44 +$2.3 + $0.64 + $0.24
= $5.18
Therefore, the expected value for a student to spend on lunch each day is $5.18
