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kaitlynnputtere
02.10.2019 •
Mathematics
Mrs. brown has 8 more boys than girls in her class and has a total of 26 students. which of the following systems of equations could be used to solve this problem?
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Ответ:
26=b+g
b=g+8
Ответ:
314 units
Step-by-step explanation:
The surface area formula for a sphere is --->
-If the radius is 5 unites, then simply substitute 5 for r
or
In order to solve we need to use order of operations: PEMDAS
We start from right to left
P= Parenthesis ()
E= exponents x²
M= multiplication X
D=divison ÷
A= addition +
S= subtraction -
Now that we know this, we can solve:
Exponents are first - 5² or (5x5) = 25
4(3.14)(25)
Now multiply- 25 X 3.14 = 78.5
4 X 78.5 = 314
Therefore the surface area of the sphere is 314 units