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vagabundo [1.1K]
3 years ago
14

2. Two numbers are in the ratio of 3 : 5. If 8 is added

Mathematics
1 answer:
Vesnalui [34]3 years ago
3 0

Answer:

 x/y = 3/5

=> x = (3/5)y   (1)

(x + 8)/(y + 8) = 2/3

=> 3*(x + 8) = 2*(y + 8)

=> 3x + 24 = 2y + 16

=> 3x - 2y = -8   (2)

From (1) and (2), we have:

=> 3*(3/5)y - 2y = -8

=> (-1/5)y = -8

=> y = 40

=> x = (3/5)*y = (3/5)*40 = 24

=> Solution: x = 24, y = 40

Hope this helps!

:)

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Recall that all three angles in a triangle equals 180.
Knowing this, we just have to add up all the angles and figure out what the value 'x' is.

(x-22 + x-17 + 3x+19) = 180
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5x - 20 = 180
Add 20 to both sides:
5x = 200
Divide both sides by 5:
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Now that we found the value for x, we need to solve for angle A.
Simply input the value of 'x' into angle A's equation:
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A researcher obtains t = 2.35 for a repeated-measures study using a sample of n = 8 participants. Based on this t value, what is
ZanzabumX [31]

Answer:

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Step-by-step explanation:

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level is not provided but we can assume it as \alpha=0.05. First we need to calculate the degrees of freedom like this:

df=n-1=8-1=7

The next step would be calculate the p value for this test.  Since is a bilateral test or two tailed test, the p value would be:  

p_v =2*P(t_{7}>2.35)=2*0.0255=0.051  

If we compare the p value and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% or 1% of significance we fail to reject the null hypothesis.  

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What is the domain of the relation {(0,1),(2,4),(3,7),(5,4)}​
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Solve for x…..…………………
anzhelika [568]

Answer:

x = 11

Step-by-step explanation:

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(2x - 16) + (x - 8) = 9

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Answer:

Her pay for the week= $ 611.325

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= $ 611.325

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