Answer:
x=35
y=145
z=25
Step-by-step explanation:
(do first)x:
55 + 90 = 145
180-145=35
(do last)y:
25+10=35
180-35=145
(do second)z:
65+90=155
180-155=25
Answer: The correct answer is: " 6 ∛3 " .
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Step-by-step explanation:
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Given: 2 * ;
Simplify this given expression:
Let us list the factors of: 81:
1, 2, 3, 9, 27 , 81 .
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Are any of these factors "perfect cubes"?
Let's see: ∛27 = 3 ; (use calculator); since: " 3³ = 3 * 3 * 3 " .
81 = 27 * 3 ;
So: " ∛(81) " ;
= ∛(27) * ∛(3) ;
= " 3 * ∛3 " ;
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→ The original expression:
" 2 * ∛81 " ;
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= 2 * 3 * ∛3 ;
= (2 * 3) * ∛3 ;
= 6 ∛3 .
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The answer is: " 6 ∛3 " .
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Hope this answer is helpful to you!
Wishing you the best!
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Hmm
(a+b)^2=(a+b)(a+b)=a^2+2ab+b^2
basically
for
ax^2+bx+c
it is a perfect trinomial when
b=2(√a)(√c)
remember to take both positive and negative roots into consideration
because
(a+b)^2=a^2+2ab+b^2 and
(a-b)^2=a^2-2ab+b^2
see each
first one
-70=2(9)(4)
-70=72
false
second
-90=2(8)(5)
-90=80
false
third
-72=(9)(4)
-72=72
false
but, the last one could be negative
(9x-4)^2 is factor
that is the answer
the answer is 81x^2-72x+16
Answer:
B. 271 square units
Step-by-step explanation:
The area is the sum of 3 rectangles areas
step 1 12 * 19 = 228
step 2 3 * 3 = 9
step 3 2 * 17 = 34
Now, we add all the answers we got to get the area.
= 228 + 34 + 9 = 271 square units