Can u PLSSSSSSSSSSSSSSSSSSS answer this and show ur work
2 answers:
<h3>Answer: 80</h3>
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Explanation:
There are probably many approaches here, but one way to do this is to extend segment DO to form a line. Check out the diagram below. This line is in red.
The goal is to have this line extend to intersect with line AB. Let's call this intersection point E.
In that diagram, I've marked the variable y as angle EOB. Notice that angles BEO and CDO are congruent alternate interior angles (since lines AB and CD are parallel). So that's where that extra 30 degree angle comes from.
Focus on triangle EOB. The three angles of any triangle always add to 180
E+O+B = 180
30+y+50 = 180
y+80 = 180
y = 180-80
y = 100
The last step is to solve the equation below for x
x+y = 180
x+100 = 180
x = 180-100
x = 80
This works because angles x and y are supplementary. They form a straight angle.
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Part A:
Expression
The constants are 15 and 100
The variables are
and 
Part B:
Expression has two terms; 
and 
. We know this because both have different variables attached to them
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The term is the expression for the total earned from her allowance
Expression
The constants are 15 and 100
The variables are
Part B:
Expression
Part C:
The term
Answer:
The claim that the current work teams can build room additions quicker than the time allotted for by the contract has strong statistical evidence.
Step-by-step explanation:
We have to test the hypothesis to prove the claim that the work team can build room additions quicker than the time allotted for by the contract.
The null hypothesis is that the real time used is equal to the contract time. The alternative hypothesis is that the real time is less thant the allotted for by the contract.
The significance level, as a storng evidence is needed, is α=0.01.
The estimated standard deviation is:
As the standard deviation is estimated, we use the t-statistic with (n-1)=15 degrees of freedom.
For a significance level of 0.01, right-tailed test, the critical value of t is t=2.603.
Then, we calculate the t-value for this sample:
As the t-statistic lies in the rejection region, the null hypothesis is rejected. The claim that the current work teams can build room additions quicker than the time allotted for by the contract has strong statistical evidence.