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Vlad1618 [11]
3 years ago
7

6.8 . 10^4 standard form

Mathematics
1 answer:
Yuri [45]3 years ago
6 0
The answer would be 68000 you can find it easily by moving the decimal to the right if the exponent is positive if its negative move it to the left. 
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Eight less thsn a number divided by three is twelve equation pleaseeee
EleoNora [17]
(X/3) - 8 = 12

X being a number divided by 3. This part in parentheses so you solve it first. Subtract 8 from that and your answer equals 12.
6 0
3 years ago
A person 44​-ftft tall casts a shadow 1313​-ftft long. at the same​ time, a nearby tree casts a shadow 3434​-ftft long. find the
3241004551 [841]
The ratio of height : shadow =44/1313

Therefore height of the tree,x=3434*(44/1313)
=115.08 ft

If you meant 13 and 34 as the length of shadows respectively, then also x=115.08 ft
6 0
3 years ago
Select the correct answer.
aleksklad [387]

Answer:

B) 454.50

Step-by-step explanation:

-25.50 + 480.00 = 454.50

8 0
3 years ago
Read 2 more answers
Every 2/3 hour, Harris can sew 1/6 pair of jeans. What is Harris's rate in pairs of jeans per hour?
STatiana [176]
Whole hour - 2/3 = 1/3

1/3 + 1/6 = 2/6 + 1/6
              = 3/6

Harris can sew half of a pair of jeans per hour.
3 0
3 years ago
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A past study claims that adults in America spend an average of 17 hours a week on leisure activities. A researcher wanted to tes
8090 [49]

Answer:

The claim is false.

Step-by-step explanation:

Given the data :

13 24 21 37 15 25 18 22 40 32

The sample mean and standard deviation can ben calculated for the given sample.

Using calculator :

Sample mean, xbar = 24.7

Sample standard deviation, s = 9.04

Sample size, n = 10

The hypothesis :

H0 : μ = 17

H1 : μ ≠ 17

The test statistic :

(xbar - μ) ÷ (s/√(n))

(24.7 - 17) ÷ (9.04/√(10))

7.7 / 2.8586990

Test statistic = 2.694

We can obtain the Pvalue, at α = 0.05 ; df = n-1 = 9

Pvalue = 0.0246

Since Pvalue < α ; we reject the null ; Hence, there is significant evidence to conclude that an adult American does not spend average of 17 hours in leisure

5 0
3 years ago
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