Answer:
Step-by-step explanation:
Perimeter of a rectangle=(length+width)×2
Let W=x, L=2x+2
25=[(2x+2)+x]×2
25=[2x+2+x]×2
Solve for x
25/2=3x+2
25/2-2=3x
25-4/2=3x
21\2=3x=7/2=x
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<em><u>__________________</u></em>
<em><u>Answer</u></em>:
a+a+a = 3a.
4b-b = 3b.
3x²+x² = 4x².
<u><em>explanation</em></u>
a+a+a = 3a.
4b-b = b(4 - 1) = b × 3 = 3b.
3x²+x² = x²(3 + 1) = x² × 4 = 4x².
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Answer:
4140
Step-by-step explanation:
360/25 = 14.4
180 - 14.4 = 165.6
165.6 x 25 = 4140
2+x^3=18
x^3=18-2
x^3=16
x=2.52
Step-by-step explanation:
Substitute 3 and 4 into the expression:
3(3)²+24(4)
Work it out:
3(3)²+24(4)=123
