Answer:
3,400,007
Step-by-step explanation:
three million= 3,000,000
four hundred thousand= 400,000
seven= 7
so:
three million, four hundred thousand, seven= 3,400,007
Answer:
6. <CAD + <DAB=90 degrees.
7. <EDB and <BDA share a common side.
8. <JAE and <DAB are adyacente angles.
9. <CFB and <EFD are acute vertical angles.
10. <BFD and <CFE are obtuse vertical angles.
11. <CDH + <GDE = 90 degrees
12. <BCF + <BAD = 90 degrees
13. <CFB + <BFD = 180 degrees
14. <CFB and <BFD
15. <GDE
16. <FBA
17. <DAB
18. Turn 23 degrees northwest.
Step-by-step explanation:
The answer should be 38! Explanation: the surface area of the rectangles is 6+8+12. The surface area of the triangles is 6+6. Add it all together and you have 38.
Answer:
The test is left - tailed
We cannot reject the organization's claim ( its cheapest screens will truly last less than 2.8 years)
Step-by-step explanation:
Sample size, n = 61
Sample mean,
Standard deviation,
Significance level, α=0.02
Null hypothesis,
Alternative hypothesis,
It is clearly seen from the alternative hypothesis, that it is a left tailed test. It is not tailed towards the two directions.
Calculate the test statistic:
Calculate the P-value:
P(Z < -3.35) = 0.0002
Since (p-value = 0.0002) < (α=0.02), the null hypothesis is rejected.
It can therefore be concluded that the mean of the cheapest screen is less than 2.8 years. i.e. the cheapest screen will last less than 2.8 years