Answer:
x=13 and y=20.
Step-by-step explanation:
76 is what u use to try to find both variables. So...u set it up as 6x-2=76. You add 2 to both sides. The 2 cancels out. 6x=78. Divide by 6. x=13. On the other hand, set the other equation as (-4+4y)=76. open the parenthesis...-4+4y=76. add 4 to both sides. 4y=80. Divide by 4 on both sides....y=20. Reason why u couldnt see x is because the x looks faded with the numbers.
Answer:
We can conclude that the battery life is greater than the 32 hour claim.
Step-by-step explanation:
The null hypothesis is:

The alternate hypotesis is:

Our test statistic is:

In which X is the statistic,
is the mean,
is the standard deviation and n is the size of the sample.
In this problem, we have that:

So



We need to find the probability of finding a mean time greater than 37.8. If it is 5% of smaller(alpha = 0.05.), we can conclude that the battery life is greater than the 32 hour claim.
Probability of finding a mean time greater than 37.8
1 subtracted by the pvalue of z = t = 2.46.
z = 2.46 has a pvalue of 0.9931
1 - 0.9931 = 0.0069 < 0.05
So we can conclude that the battery life is greater than the 32 hour claim.
Answer:
1/4, 7/12, 5/8, 2/3
Step-by-step explanation:
2/3 = 16/24 (Multiplied by 8)
7/12 = 14/24 (Multiplied by 2)
5/8 = 15/24 (Multiplied by 3)
1/4 = 6/24 (Multiplied by 6)
Answer:
11.09units
Step-by-step explanation:
Find the diagram attached
The radius of the circle is line projecting from the center to the circumference. Hence AB is the radius of the circle.
To get AB, we will use the pythagoras theorem as shown;
Given
AC=22
BC=19
AC² = AB²+BC²
22² = AB²+19²
AB² = 22²-19²
AB² = 484-361
AB² = 123
AB = √123
AB = 11.09
Hence the radius of the circle is 11.09units
Answer:
it is D.
Step-by-step explanation:
I wish it helps you