Answer:
x = x
True
Step-by-step explanation:
First, distribute the -7 by multiplying it by everything inside of the parenthesis.
-7 * x = -7x
-7 * -4 = 28
Now, put it together.
-7x + 28 = -7x + 28
We can already tell the the statement is x = x, which is true, but let's solve it just to make sure.
Isolate the x.
Subtract 28 from each side.
-7x + 28 = -7x + 28
-28 -28
Simplify it.
Divide each side by -7.
-7x = -7x
----- -----
-7 -7
x = x
This is true
5, 12, 13
if we use pythagorean theorem we can prove this true, remember they longest number will always represent the hypotenuse! so:
(5)^2+(12)^2=(13)^2
25+144=169
169=169
Answer:
225 in.²
Step-by-step explanation:
Surface area of triangular prism = bh + (s1 + s2 + s3)*L
Where,
b = 4.5 in.
h = 6 in.
s1 = 7.5 in.
s2 = 4.5 in.
s3 = 6 in.
L = 11 in.
Plug in the values
Surface area = 4.5*6 + (7.5 + 4.5 + 6)*11
Surface area = 27 + 198 = 225 in.²
<span>>>> print unichr(0x221A)
√
>>> print unichr(0x221B)
∛
>>> print unichr(0x221C)
∜
>>> </span>
Answer:
x=4
y=10
Step-by-step explanation:
3x +3y = 27
x - 3y = -11 (add these up so 3y will be eliminated and you'll have x only)
4x = 16
now let's eliminate x (you can put 4 instead of x though)
3x + 3y = 27
-3/ x -3y= -11 (multiple the the 2nd equation with -3 to eliminate x )
3x + 3y =27
-3x + 3y =33
6y = 60