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Anuta_ua [19.1K]
3 years ago
5

Will give thanks and brainliest (this is pretty easy). 20 points. click on link

Mathematics
1 answer:
icang [17]3 years ago
3 0
The answer is:  " \frac{7}{2} " .
________________________________________________
Explanation:
________________________________________________

(1/6)  / (3/7 hr) =  x/ 1 hr ;

 → (1/6) / (3/7) = x ; 

↔  (1/6) / (3/7)  = x ; 

→  (1/6) * (7/3) = x ; 

The "3" cancels to a "1", and<span /> the "6" cancels to a "2" ; 
  
          →  { since:  " 6 ÷ 3 = 2" ; and since:  " 3 ÷ 3 = 1 "} ;
_____________________________________________________
→  And we can rewrite as:

→  (1/2) * (7/1) = (1 * 7) / (2 * 1)  = 7/2 ; 
_____________________________________________________
The answer is:  " \frac{7}{2} " .
_____________________________________________________
<u>Note</u>:  The question asks, "At this rate, what "FRACTION" of the distance...?" ; 

→  As such, we leave the answer in the "fraction" form.
_____________________________________________________
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Find the slope of the line passing through the points (3,9) and 12,-5)​
astraxan [27]

Answer:

9/-24  or ~ -0.38

Step-by-step explanation:

x       y

3      9

12   -15

from 9 to -15 it will be subtracting 24

From 3 to 12 it will be adding 9

y/x = 9/-24  or -0.375 ~ -0.38

7 0
3 years ago
Which comparisons are true? Choose all that apply. A. 7.34 &gt; 7.304 B. 1.628 &gt; 1.63 C. 4.05 &lt; 4.055 D. 9.103 &lt; 9.13 E
Nimfa-mama [501]

Answer:

The answers are A, C, & D.

Step-by-step explanation:

A: the 34 would have an imaginary 0 behind it, so then it would become 340, which is greater than 304.

B, C, D: same logic as A

6 0
3 years ago
Which operation is NOT closed for polynomials?
MAXImum [283]

Answer:

  • Option D

Step-by-step explanation:

When you add, multiply or subtract polynomials, the operation results in another polynomial.

When dividing polynomials, the operation may not result in another polynomial. In this case you normally end up with rational expression in the fraction form.

This operation is said not closed.

In our case this is option D.

4 0
2 years ago
Read 2 more answers
Carli made 9 greeting
Leona [35]

Step-by-step explanation:

Shes wrong because she did it in 3 hours which means she would have made 3 cards and not 9.

3 0
3 years ago
An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha
natita [175]

Answer:

Step-by-step explanation:

Given that:

Population Mean = 7.1

sample size = 24

Sample mean = 7.3

Standard deviation = 1.0

Level of significance = 0.025

The null hypothesis:

H_o: \mu = 7.1

The alternative hypothesis:

H_a: \mu > 7.1

This test is right-tailed.

degree \ of \  freedom=  n - 1 \\ \\ degree \  of \  freedom  =  24 - 1 \\ \\ degree \ of \  freedom   = 23

Rejection region: at ∝ = 0.025 and df of 23, the critical value of the right-tailed test t_c = 2.069

The test statistics can be computed as:

t = \dfrac{ \hat X - \mu_o}{\dfrac{s}{\sqrt{n}}}

t = \dfrac{ 7.3-7.1}{\dfrac{1}{\sqrt{24}}}

t = \dfrac{0.2}{0.204}

t = 0.980

Decision rule:

Since the calculated value of t is lesser than, i.e t = 0.980 < t_c = 2.069, then we do not reject the null hypothesis.

Conclusion:

We conclude that there is insufficient evidence to claim that the population mean is greater than 7.1 at 0.025 level of significance.

6 0
3 years ago
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