Hello!
You can use the Pythagorean Theorem to solve this
Separate the rectangle into two triangles
c is the diagonal
a and b are the side lengths
Put in the values you know
Square the numbers
Add
Take the square root of both sides
6.4 = c
The answer is B) 6.4 units
Hope this helps!
Answer:
f(- x) = 6x² + x
Step-by-step explanation:
To evaluate f(- x) , substitute x = - x into f(x) , that is
f(- x) = 6(- x)² - (- x) = 6x² + x
<h3>Solution:</h3>
-38d - 57 = -19d + 76
or, -38d + 19d = 76 + 57
or, -19d = 133
or, d = 133/-19 = -7
<h2>Answer: d = -7</h2>
<h3>To Check:</h3>
By putting the value of d, we get
-38(-7) - 57 ≥ -19(-7) + 76
or, 266 - 57 ≥ 133 + 76
or, 209 ≥ 209
Hence, Verified.
You have to <em>FOIL</em> (multiply the first, then outer, then inner, then last)
(x-2)(x+4)
First: multiply x by x to get x².
Outer: multiply x by 4 to get 4x.
Inner: multiply -2 by x to get -2x.
Last: multiply -2 by 4 to get -8.
This gives you:
x² + 4x - 2x - 8
Combine like terms to get your final answer:
x² + 2x - 8
Hope this helped!! xx
Try it with some random number, like a=3.
Is "3+0 = 0+3 = 0" true? No.
If you were doing multiplication, then it would be true, but not with addition.
