3(x+2) = 2(2x+7)
3x + 6 = 4x + 14 (On the left side we distribute 3 through parenthesis and on the right side we do the same with 2)
3x - 4x = 14 - 6 (Here we move 4x from the right to the left side and it changes its sign. We do the same with 6)
-x = 8
x = - 8
Answer:
B is the answer.
Step-by-step explanation:
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Triangles cannot have two 90 degrees because that would add up to 180 and triangles need 3 angles to add to 180
You can't have an obtuse angle and a right angle. say the obtuse angle was 110, and a right angle is 90. 110 + 90 is more than 180.
Two obtuse angles would be more than 180.
This leaves us with B being correct, because you can have an obtuse angle and an acute angle, and it can be less than 180 degrees.
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#teamtrees #WAP (Water And Plant)
The correct answer is 50%.
Approximately the middle 50% of data is contained inside the box of a box plot.
Answer:
Option B - There is at least some difference in the average times spent by the two groups in the mall.
Step-by-step explanation:
A null hypothesis is a hypothesis that states that there is no statistical significance between the two variables. Thus, It is usually the hypothesis that a researcher or experimenter will try to disprove or discredit. While an alternative hypothesis is one that states there is a statistically significant relationship between two variables.
Now, applying these definitions to the question, we can see that;
Null Hypothesis is;
H0; There is no difference in the average times spent by the two groups in the mall
While the alternative hypothesis is;
Ha; There is at least some difference in the average times spent by the two groups in the mall
Thus, correct answer is option B
1 hour is equivalent to 60 minutes
3/4 hours is - 60 minutes x 3/4 = 45 minutes
3 hours are equivalent to 60 minutes/hr x 3 hr = 180 minutes
it takes Cindy 45 minutes to complete a puzzle
so it takes her 45 minutes for - 1 puzzle
then in 180 minutes she can make - 1/45 x 180 = 4 puzzles
in 3 hours she can complete 4 puzzles