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AveGali [126]
3 years ago
12

What is 1483+2942838

Mathematics
1 answer:
jarptica [38.1K]3 years ago
5 0

Answer: 2,944,321

Step-by-step explanation: Use long addition and evaluate.

Hope this helps you out! ☺

-Leif Jonsi-

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If k = -5 find the value of -7k? Please explain step by step or show work on piece of paper to get marked.
Mnenie [13.5K]

Answer:

35

Step-by-step explanation:

Given k=-5

Substitute into the equation given

-7(-5) = 35

8 0
2 years ago
Suppose that each observation in a random sample of 100 fatal bicycle accidents in 2015 was classified according to the day of t
liraira [26]

Answer:

The calculated χ² =  0.57   does not fall in the critical region χ² ≥  12.59  so we fail to reject the null hypothesis and conclude the proportion of fatal bicycle accidents in 2015 was the same for all days of the week.

Step-by-step explanation:

1) We set up our null and alternative hypothesis as

H0:  proportion of fatal bicycle accidents in 2015 was the same for all days of the week

against the claim

Ha:  proportion of fatal bicycle accidents in 2015 was not the same for all days of the week

2) the significance level alpha is set at 0.05

3) the test statistic under H0 is

χ²= ∑ (ni - npi)²/ npi

which has an approximate chi square distribution with ( n-1)=7-1=  6 d.f

4) The critical region is χ² ≥ χ² (0.05)6 = 12.59

5) Calculations:

χ²= ∑ (16- 14.28)²/14.28 + (12- 14.28)²/14.28 + (12- 14.28)²/14.28 + (13- 14.28)²/14.28 + (14- 14.28)²/14.28 + (15- 14.28)²/14.28 + (18- 14.28)²/14.28

χ²= 1/14.28 [ 2.938+ 5.1984 +5.1984+1.6384+0.0784 +1.6384+13.84]

χ²= 1/14.28[8.1364]

χ²= 0.569= 0.57

6) Conclusion:

The calculated χ² =  0.57   does not fall in the critical region χ² ≥  12.59  so we fail to reject the null hypothesis and conclude the proportion of fatal bicycle accidents in 2015 was the same for all days of the week.

b.<u> It is r</u>easonable to conclude that the proportion of fatal bicycle accidents in 2015 was the same for all days of the week

6 0
3 years ago
Help me with this question please!! no links!!
In-s [12.5K]
50.24
4 squared is 16
16•3.14= 50.24
A= 3.14(4)^2
:)
3 0
2 years ago
Dominick is planning to take a vacation to either Orlando or Tampa Bay. He wants to go to the city that is warmer, on average. T
Sophie [7]
Where is the box plot?
4 0
3 years ago
The sum of a number and -15 is equal to the product of that number and 1/4.what is the number
Zolol [24]

Answer:

10

Step-by-step explanation:

(x−a)(x−b)=x2−(a+b)x+ab

Hope this was helpful----

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2 years ago
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