Answer:
x=-4
x=4
Step-by-step explanation:
We can factor x^2 -16 = 0 by recognizing that it is a difference of squares. That means we can factor the equation to (x-4)(x+4) = 0. By using the Zero Product Property we know that either (x-4) or (x+4) is equal to 0. That means that x either equals -4 or 4.
Answer:
x = sqrt(32)
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2+ b^2 = c^2
7^2 + x^2 = 9^2
49+x^2 = 81
Subtract 49 from each side
x^2 = 81-49
x^2 =32
Take the square root of each side
sqrt(x^2) = sqrt(32)
x = sqrt(32)
Answer:
x=4.5
Step-by-step explanation:
The sum of all the angles in a square=360°
20(4.5)=90
90×4=360
Answer:
The answer is option B. 729 over 64
Step-by-step explanation:
180-89=91(angles on a straight lline)
5x-24=91(Corresponding angles)
5x =91+24
5x =115
<em> x =23 degrees</em>
94+13x-5=180(allied angles)
94+13x-5 =180-94+5
13x =91
<em> x=7</em>
7(x-7)=7x-49
7x-49=126(corresponding angles)
7x =126+49
7x=175
<em> x=25</em>
<em>Hope you got it </em>
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