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adoni [48]
3 years ago
5

Yancy estimates that the product of a fraction and a decimal is 10. Which expression could represent the fraction and the decima

l?
a. 1/4 x 41.29
b. 2/3 x 29.4
c. 3/4 x 30.53
d. 5/6 x 62.3
Mathematics
1 answer:
Pani-rosa [81]3 years ago
7 0
A) it comes out to be 10.3225
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Logarithm help needed
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Answer:

See below.

Step-by-step explanation:

Helen made a mistake in the last step.

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It is the cube root of  2^4 not the 4th root of 2^3.

Stephen made a mistake in the first step.

He replaced ln2 by 2 which is evidently wrong (e^ln2 = 2  NOT ln 2).

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3 years ago
You are standing 350 feet away from a skyscraper that is 750 feet tall. What is the angel of elevation from you to the top of th
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tan\  \alpha = \frac{350}{750} = \frac{7}{15} \approx0.4667\ \ \ and\ \ \  \alpha

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3 years ago
The claim is that the standard deviation of the speeds of drivers in Bradford is 8 mph. An experienced driver feels that this is
Irina-Kira [14]

Answer:

Null hypothesis is rejected. Standard deviation is > 8 miles per hour

Step-by-step explanation:

σ [Population standard deviation] = 8 , s [sample standard deviation] = s

n [no of items] = 8

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χ2 = (n - 1) . s^2 / σ^2

= 49 x (10.5)^2 / 82 = 5402.25 / 64

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df [degree of freedom] = n -1 = 50 - 1 = 49

P value (χ^2 49 > 84.410) = 0.00125

p = 0.0013

p < α ie 0.05

So, H0 is rejected

Hence we state that standard deviation is > 8 miles per hpur

6 0
3 years ago
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AURORKA [14]

Answer:

intervals (-3,-1) and (0,+infinity)

Step-by-step explanation:

if f'(x)>0 then f is increasing

3 0
2 years ago
Find the volume of the cone shown below
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Answer:

3.14*9^2*12/3=

Step-by-step explanation:

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3

4 0
3 years ago
Read 2 more answers
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