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barxatty [35]
4 years ago
10

Solve: 2|x+7|-4 is less than or equal to 0

Mathematics
1 answer:
Yuri [45]4 years ago
5 0

Answer:

less than

Step-by-step explanation:

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A highly selective boarding school will only admit students who place at least 2.5 standard deviations above the mean on a stand
VladimirAG [237]

Answer:

The minimum score that an applicant must make on the test to be​ accepted is 360.

Step-by-step explanation:

Given : A highly selective boarding school will only admit students who place at least 2.5 standard deviations above the mean on a standardized test that has a mean of 300 and a standard deviation of 24.

To find : What is the minimum score that an applicant must make on the test to be​ accepted?

Solution :

We apply the z formula,

z=\frac{x-\mu}{\sigma}

Where, z value= 2.5

\mu=300 is the mean of the population

\sigma=24 is the standard deviation

x is the sample mean.

Substituting the values in the formula,

2.5=\frac{x-300}{24}

2.5\times24=x-300

60=x-300

x=60+300

x=360

Therefore, The minimum score that an applicant must make on the test to be​ accepted is 360.

8 0
4 years ago
If sin (7y) = cos (5y + 14), find y.
Reil [10]

Answer:

Step-by-step explanation:

sin(7y)=cos(5y+14)=sin(90-(5y+14))=sin(76-5y)

7y=76-5y

12y=76

y=76/12=19/3

or

sin(7y)=cos (5y+14)=sin (90+(5y+14))=sin (5y+104)

7y=5y+104

2y=104

y=52

7 0
4 years ago
Help me please! Asap (ScreenShot)
bogdanovich [222]

Hope this helps! I filled it out below.

8 0
3 years ago
[HELP PLEASE ALGEBRA] <br><br> Would the answer only be B?
Salsk061 [2.6K]
Hello,

|x+4|=3x-5
if x+4>=0 then
          |x+4|=x+4
          x+4=3x-5
          2x=9
            x=9/2
else
    x+4<0 : x<-4
    |x+4|=-(x+4)
     -(x+4)=3x-5
    -x-4=3x-5
    4x=1
    x=1/4 : to exclude since x<-4
end if


Only one solution : x=9/2
ANSWER B.
7 0
3 years ago
Help what's the answer to this??
True [87]

Answer:

AD

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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