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Evgen [1.6K]
2 years ago
14

5/7=12/y solve for y.

Mathematics
2 answers:
ipn [44]2 years ago
5 0
I believe the answer is 84/5
vesna_86 [32]2 years ago
3 0

Answer:

Step-by-step explanation:

5/7 = 12/y

5y = 84

y = 84/5

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Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8
drek231 [11]

Answer:

95% Confidence interval:  (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, \bar{x} = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

100 \pm 1.96(\frac{11}{\sqrt{30}} ) = 100 \pm 3.94= (96.06,103.94)

(96.06,103.94) is the 95% confidence interval for  the population mean test score.

8 0
3 years ago
What is the equation of the line that has a slope of -5/3 and a y-intercept of −2?
Serhud [2]

Answer:

y= -5/3x-2

Step-by-step explanation:


3 0
3 years ago
−4+8x)+3&gt;x−4?<br><br> x&gt;16<br><br> x&lt;−1<br><br> x&lt;−323<br><br> x&gt;433
pentagon [3]

Answer:

x > 4/33

Step-by-step explanation:

(-4 +8x) +3> x/-4

8x - 1 > x/-4

-32x + 4 < x

4 < 33x

4/33 < x

6 0
2 years ago
What is the range of the function y= -|x|
Katen [24]
Hello, again!!

So, the range is the outcome when you plug in any x. In other words, the y.
Because this is absolute value, the x will turn positive. However, the number will then turn negative.
Therefore, y will ALWAYS be negative.

The answer is C.

Hope this helps!! Let me know if you have ANY questions.
4 0
3 years ago
CAn you pls help me on this one ?
Alex17521 [72]
C is the corret answer 
5 0
2 years ago
Read 2 more answers
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