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Anika [276]
3 years ago
12

(79x - 51y) - (58x + 31y)

Mathematics
1 answer:
Komok [63]3 years ago
8 0
Simplified: 24x-82y
Work: 79x-51y-55x-31y 24x-82y
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A study of 138 penalty shots in World Cup Finals games between 1982 and 1994 found that the goalkeeper correctly guessed the dir
vladimir2022 [97]

Answer:

z=-2.09

Step-by-step explanation:

Given that a study  of 138 penalty shots in World Cup Finals games between 1982 and 1994 found that the goalkeeper correctly guessed the direction of the kick only 41% of the time.

Set up hypotheses as:

H_0: p=0.50\\H_a: p

(left tailed test at 5% significance level)

Standard error = 0.043

Sample proportion p = 0.41

p difference = 0.41-0.50=-0.09

Test statistic Z = p diff/std error

= \frac{-0.09}{0.043} \\=-2.09

Z = -2.09

4 0
3 years ago
.divide the problem.
quester [9]

Answer:

x - 2x - 15  \: divided \: by \: x - 3

  1. according to the above x²-2x-15 divided by the number below x-3 first I cancel out the x
  2. x  - 2x - 15 \: divided \: by \:  - 3
  3. the we solve the next x-5 divided by x²-9 then as usual rule out the x
  4. - 5 \: divided \: by \: x - 9
  5. now we only have x-2x-15 divided by-3 divided by-5÷x-9 now our next step is to again single the equations out
  6. x - 2x - 15 \: divided \: by \:  - 3 \: lets \: rue \\s \: rule \: out \:  - 3 \: and \: 15 \: giving \: us \: x - 2x - 5
  7. now the next -5 divided by x-9 here there's nothing to rule out therefore the sign "÷" is changed to "×" cancel out the -5 and therefore we have
  8. x - 2x = x - 9 \: as \: final \: answer

6 0
2 years ago
Round 318.9 million to the nearest ten million
pochemuha
You would round it to 
320 million
8 0
3 years ago
Can anyone evaluate this problem for me .
AURORKA [14]

Answer:

s

Step-by-step explanation:

s

5 0
3 years ago
Read 2 more answers
Write the perimeter of the triangle in simplest form<br><br> can i please get help
Zepler [3.9K]
This is easy. You just add all the like terms
8 0
3 years ago
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