2 years ago

Hard problem plz help

Mathematics

2 answers:

alexandr402 [8]2 years ago

8 0

Its true
Hope it helps.

Dafna11 [192]2 years ago

4 0

False.....................................

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Number of diagonals in a 10 sided figure are

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Answer:

35 diagonals in decagon

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Answer:

f(x) = x^2 -2x -8

Step-by-step explanation:

(x+2)(x-4)

FOIL

first: x*x = x^2

outer: -4x

inner: 2x

last: 2*-4x = -8

Add together

x^2 +2x-4x-8

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3 years ago

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2 years ago

Erin's jewelry box is in the shape of a rectangular prism. what is the surface area of Erin's jewelry box?

viktelen [127]

ANSWER

190 square inches

EXPLANATION

The surface area of a rectangular prism is calculated using the formula.

$S.A = 2(l \times w + l \times h + w \times h)$

The jewelry box has dimensions

l=10, w=5 and h=3.

We substitute the values into the formula to obtain,

$S.A = 2(10\times 5+ 10 \times 3 + 5\times 3)$

This will give us,

$S.A = 2(50+ 30 + 15)$

$S.A = 2(95) = 190 {in}^{2}$

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3 years ago