Step-by-step explanation:
15a)
Subtract both sides by 21
15b)
7 and -3 multiply to -21 and add to 4
The factors are (x+7)(x-3)
15c)
x+7 =0
x=-7
x-3=0
x=3
To solve for the surface area of a sphere, the formula is 4*pi*r^2. Since we are using 3.14 instead of pi, the formula becomes 4*3.14*r^2. To solve, all we have to do is substitute in the radius for r and solve it like a normal question.
SA=4*3.14*r^2
SA=4*3.14*6^2
SA=452.16
Since we used 3.14 instead of pi, we have to say this is an approximate answer. This means the surface area of this sphere is 452.16 square inches.
Answer:
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Step-by-step explanation:
Kindly check the attached image for the step by step solution to the question
Answer:
In order to find the median of the data you take every value and order it from least to greatest. When you do this make sure you write a number the correct amount of times. for example if there are 4 dots above 6 on the dot plot then you need to make sure you write 6 4 times. After you have all the data from least to greatest find the number in the middle. that is the median.
