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3 years ago

Help pls! i cant figure it out

Mathematics

2 answers:

shtirl [24]3 years ago

7 0

The answer is 17.5!! goodluck

bearhunter [10]3 years ago

7 0

Answer:

First we need to convert those feet into inches.

0.5 x 12 = 6 inches

1.5 x 12 = 18 inches

4 inches is just 4 inches

Now we just find the surface area:

6 x 4 = 24

24 x 2 = 48

18 x 4 = 72

72 x 2 = 144

6 x 18 = 108

108 x 2 = 216

Now lets add all the given areas:

48 + 144 + 216 = 408 square inches (just do the number since they tell you not to use the unit)

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Read 2 more answers

Find the value of x and y

Natalija [7]

Hello and Good Morning/Afternoon:

Let's take this problem step-by-step:

What does the information want:

value of x
value of y

Let's gather some information:

ΔA'BC' and ΔABC are similar triangles

⇒ Angle B is shared by both triangles

⇒ Angle A' and A are the same, as they are both on parallel

lines, A'C' and AC, and both angles are formed with the

same line AB

⇒ by the Angle-Angle Theorem*, they are similar triangles

If they are similar triangles:

⇒ their side lengths are proportional to each other

let's find x's value

⇒ let's set up a proportion

$\frac{A'B}{AB} =\frac{A'C'}{AC} \\\frac{30}{x+30} =\frac{14}{22} \\14(x+30) = 30*22\\14x + 420 = 660\\14x = 240\\x = 17.143$

let's find y's value

⇒ let's set up a proportion

$\frac{BC'}{BC} =\frac{A'C'}{AC} \\\frac{y}{y+15} =\frac{14}{22} \\22y=14(y+15)\\22y=14y+210\\8y=210\\y=26.25$

Answer:

x= 17.143
y = 26.25

Hope that helps!

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