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olasank [31]
3 years ago
8

Number 3 please solve and explain

Mathematics
1 answer:
allochka39001 [22]3 years ago
8 0

Answer: -12.5

Step-by-step explanation:

x(2y-3) and x=2.5 and y=-1

so you fix in the figures so it will turn to

2.5(-2-3)

so then you open the brackets with 2.5

-5-7.5

Answer: -12.5

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Assume standard deviation of all invoices is $200. Sample 100 invoices. What is the standard deviation of xbar
posledela

Answer:

<h3>20</h3>

Step-by-step explanation:

Standard deviation of the mean is expressed as:

SM = s/√n

s is the standard deviation of all invoices

n is the sample size of the invoiced

Given

s = $200

n = 100

Required

Standard deviation of the mean

Substitute the given parameters into the given equation

SM = 200/√100

SM = 200/10

SM = 20

Hence the standard deviation of xbar is 20

3 0
3 years ago
Laptop computers are measured according to the diagonals of their screens. A 16-inch laptop has a screen that is 7 inches tall.
disa [49]
Approximately 14.4 inches I think is the correct answer!
6 0
3 years ago
Kimmy earns a $200 commission on all
aalyn [17]
The equation is 30,000+200x=80,000. X is the number of sales.
8 0
3 years ago
What is 10x as much as 70?​
sleet_krkn [62]

9514 1404 393

Answer:

  700

Step-by-step explanation:

You figure this out by multiplying 70 by 10:

  10×70 = 700

5 0
3 years ago
PLEASE ANSWER ALL BIG REWARD
sleet_krkn [62]

Answer:

  1. multiplying
  2. similar figures
  3. scale factor
  4. (x, y) (–3x, –3y) and (x, y) (0.23x, 0.23y)
  5. (x, y) --> (2x, 4y)
  6. Need diagram
  7. A. The line segment has become longer with endpoints D' (-12, -10) and E' (6 -8).
  8. Need image
  9. Reduction
  10. Enlargement

<em>good luck, i hope this helps :)</em>

6 0
3 years ago
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