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USPshnik [31]
3 years ago
6

SOMEONE PLEASE HELP ME

Mathematics
1 answer:
notka56 [123]3 years ago
3 0
Area of deck= 2(20w)+4(w^2)+2(50w)d
456=2(20w)+4(w^2)+2(50w)

456=40w+4w^2+100w

456=4w^2+140w

114=w^2+35w

0=w^2+35w-114

find what 2 numbers multiply to get 114 and add to get 35 and factor

-3 and 38

0=(w-3)(w+38)

set each to zero

w-3=0

w=3
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inna [77]

Answer:

M = (Y2 - Y1) / (X2 - X1)

Step-by-step explanation:

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4 0
3 years ago
Factor this equation 75k^2+30k=-3
Solnce55 [7]

Answer:

k=-1/5

Step-by-step explanation:

Factor and set each factor equal to zero.

Add 3 to both sides of the equation.

75k^2+30k+3=0

Factor 3 out of 75k^2+30k+3.

Factor using the perfect square rule.

Divide each term by 3 and simplify.

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7 0
3 years ago
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A square has an area of 9 cm². Find its perimeter
dlinn [17]

Answer:

12

Step-by-step explanation:

area is base x height. 3×3 is 9. all sides of a square are equal so 3+3+3+3= the perimeter which is 12.

8 0
3 years ago
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Help me plz i need help
Vikentia [17]

Answer:

x=10

Step-by-step explanation:

Because these are vertical angles, they will be congruent.

Ask yourself, "What times 3 is thirty?" or 30÷3=?

Your answer will be 10.

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aleksandrvk [35]
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