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KIM [24]
3 years ago
9

Find the value of 1/3^-2​

Mathematics
1 answer:
ohaa [14]3 years ago
3 0

Answer:

9

Step-by-step explanation:

just reciprocate and change the negative sign to positive

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A researcher wants to run a 2 x 3 mixed factorial design. The first factor is the within-subjects. The second factor is the betw
Elden [556K]

Answer:

3×20= 60.

Step-by-step explanation:

Given:

A researcher wants to run a 2 x 3 mixed factorial design.

1st factor is the subject within

2nd factor is the subject between

Now to calculate how many participants will he need in total

(greater of 2,3)×20

that is

=3×20= 60.

8 0
3 years ago
Jules has $1,200 and is saving $40 per week. Kelsey has $400 and is saving $50 a week. In how many weeks will Jules and Kelsey h
enyata [817]
80 weeks 
1,200+40x=400+50x
800+40x=50x
800=10x
x=80
3 0
3 years ago
Find the mean, median, mode, and range of this data: 49, 49, 54, 55, 52, 49, 55. If necessary, round to the nearest tenth.
Zigmanuir [339]
The mean is the average.
So, to find the mean you want o add up all of the numbers and then divide by the number of numbers.

49 + 49 + 54 + 55 + 52 + 49 + 575 = 363
363 / 7 = 51.85
Rounded to 52

For the median you want o line all of your number up from least to greatest and then find the middle number.

49,49,49,52,54,55,55

Your median is 52

The mode is the number that is listed most often

49 is listed 3 times
54 is listed 1 time
52 is listed 1 time
55 is listed 2 times

So, your mode is 49




4 0
3 years ago
Explain what is the slope, and what is the y-intercept.
cluponka [151]

Answer:

slope :

The steepness of a line expressed as a ratio, using any two points on the line.

y-intercept

The value of  y  at the point where a curve crosses the y-axis.

Step-by-step explanation:

8 0
3 years ago
What is a rational number between 7.7 and 7.9
Luda [366]
Hey mate ,

here is your answer

**********************

The average between any two rational numbers is also rational.
(7.7 + 7.9)/2 = 7.8
7.8 is rational because it can be written as a fraction with integer numerator and denominator (39/5) and it is also a terminating decimal.

7 0
3 years ago
Read 2 more answers
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