Answer:
15
Step-by-step explanation:
to find area you need to do height times base and divide by 2 or multiply it by 1/2.
10 x 3 = 30
30/2 = 15
Answer:
either A or D
i would go with A
Step-by-step explanation:
If you multiply 15 and 30 you would get 450, which is the total square footage.
then divide that by the total time, 4 hours, and you get 112.5 ft.
Answer:
Population: All adults in the country
Sample: The 1,003 adults selected
Step-by-step explanation:
The sample always is a little part of the whole population. This part is the one that you are going use to study and make all the calculations (Example:average, median, percentage, standard deviation).
In that way, the sample represents all the population but is not the population, it's just a part.
Answer:
x = 10/7 or x = -10/7
Step-by-step explanation:
By using the completing the squares method, we have to divide the coefficient of the x term by 2, square it and add to both sides
From what we have here, the coefficient of the x term is 0
Thus, we have it that;
0 = 100 - 49x^2
We can proceed to use the difference of two squares here;
Whereby;
a^2 - b^2 = (a-b)(a + b)
0 = (10-7x)(10+7x)
10 - 7x = 0 or 10 + 7x = 0
7x = 10 or 7x = -10
x = 10/7 or x = -10/7
