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choli [55]
4 years ago
12

(8x-7)+5 when x is 2​

Mathematics
1 answer:
Irina-Kira [14]4 years ago
4 0

Answer:

If X=2 then the equation would be solved starting with 8x2=16 then take 16 and subtract it by 7 which would equal 9, then you take 9 and add 5 to it and that would give you the answer of 14

Step-by-step explanation:

(8x-7)+5   x=2

(8x2-7)+5

(16-7)+5

9+5

<u>Answer 14</u>

I hope this helps you

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A university administrator was interested in determining if there was a difference in the distance students travel to get from c
eduard

Answer:

1) Fail to reject the Null hypothesis

2) We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.

Step-by-step explanation:

A university administrator wants to test if there is a difference between the distance men and women travel to class from their current residence. So, the hypothesis would be:

H_{o}: \mu_{F}-\mu_{M}=0\\\\ H_{a}: \mu_{F}-\mu_{M}\neq 0

The results of his tests are:

t-value = -1.05

p-value = 0.305

Degrees of freedom = df = 21

Based on this data we need to draw a conclusion about test. The significance level is not given, but the normally used levels of significance are 0.001, 0.005, 0.01 and 0.05

The rule of the thumb is:

  • If p-value is equal to or less than the significance level, then we reject the null hypothesis
  • If p-value is greater than the significance level, we fail to reject the null hypothesis.

No matter which significance level is used from the above mentioned significance levels, p-value will always be larger than it. Therefore, we fail to reject the null hypothesis.

Conclusion:

We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.

7 0
4 years ago
Find the solution to the following system of equations?<br> x - 2y = 5<br> -x + y = 3
Rzqust [24]

Answer:

x = -11 and y= -8 is the solution to the system

Step-by-step explanation:

Given:

x - 2y = 5    let it be equation (i)

-x + y = 3     let it be equation (ii)

To find:

x = ?

y = ?

Solution:

The equations are given to us from which we are supposed to find the values of x and y

Taking first equation which is

x - 2y = 5    

adding 2y on both sides

x - 2 y + 2y = 5 + 2y

x = 5 +2y                   ............................(iii)

Now putting this value in equation (ii)

which is

-x + y = 3

Putting value gives

-(5 + 2y) + y = 3

-5 -2y+y = 3

-5 - y = 3

adding 5 on both sides

-5 -y + 5 = 3 + 5

-y = 8

Multiplying both sides by (-1)

-y(-1) = 8 * (-1)

y = -8

Now we have equation (iii) which is

x = 5 + 2y

putting the value of y in it

x = 5 + 2*(-8)

x = 5 -16

x = -11

so the solution to the system is

x = -11 and y= -8


8 0
4 years ago
12.
g100num [7]

Answer:

Step-by-step explanation:

tan^{-1} (\frac{\sqrt{3} }{3} )=x\\tan x=\frac{\sqrt{3} }{3} =tan (\frac{\pi}{6} )\\x=\frac{\pi}{6}

7 0
3 years ago
Alculate the product below and give VOur answer in Sciencnotato
aivan3 [116]

Answer:

1.64

Step-by-step explanation:

3 0
3 years ago
If briana rounds 9.124 to the nearest hundredth, what digit will be in the hundredths place?
brilliants [131]
I got the answer 9.12. In the hundredths place, it would be 2.
Hope this helps! :D
6 0
4 years ago
Read 2 more answers
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