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Zielflug [23.3K]
3 years ago
7

This week, Sarah spent a total of 120 minutes studying. This total was 20 more

Mathematics
1 answer:
MrMuchimi3 years ago
4 0

Answer:

She spent 25 minutes studying last week

Step-by-step explanation:

L = last week

120 = 4L + 20

Subtract 20 from either side

100 = 4L

Divde either side by 4

25 = L

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Please help!! algebra<br> Find each value<br> 1. ∛x³<br> 2. 6³<br> 3. 10³
Nezavi [6.7K]
X
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1000
Hope it helps:)
5 0
3 years ago
The data shows the total number of employee medical leave days taken for on-the-job accidents in the first six months of the yea
Inga [223]

Answer:

90

Step-by-step explanation:

The sum of squares of the deviation from mean=sum(x-xbar)²=?

x

12

6

15

9

18

12

xbar=sumx/n

xbar=(12+6+15+9+18+12)/6=72/6=12

x      x-xbar       (x-xbar)²

12      12-12=0     0

6       6-12=-6     36

15      15-12=3      9

9       9-12=-3       9

18      18-12=6      36

12      12-12=0      0

sum(x-xbar)²=0+36+9+9+36+0=90

So, the sum of squares of the deviations from the mean is 90.

3 0
3 years ago
1) What is the equation of a line that is parallel to the line that is given by the equation x = -4?
tester [92]
Not sure its A but use this http://www.mathpapa.com/algebra-calculator.html
8 0
3 years ago
Simplify.
aleksley [76]
First multiply (-5/6) and (1/6) to get
-  \frac{5}{36}
then you subtract that from (8/9) to get
\frac{27}{36}
final answer is
\frac{3}{4}
5 0
3 years ago
Help please?<br> Also explain as much as you can
Natalija [7]
X^3 = 16
x^3 = 4^2

x = ∛4^2
x = 4^2/3

answer
B. 4^2/3

------------------
x^5 = 16
x^5 = 2^4
x = 2^4/5

answer
D. x = 2^4/5

5 0
3 years ago
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