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Stolb23 [73]
3 years ago
11

Which subset of the rational numbers best describes the dimension of a rectangle ?

Mathematics
1 answer:
Alinara [238K]3 years ago
6 0
Either A or D I believe
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Step-by-step explanation:

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G(t) = 3t + 4; Find g(−3)
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G(-3)= 3(-3)+4

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Given: △ABC, m∠A=60° m∠C=45°, AB=8 Find: Perimeter of △ABC, Area of △ABC
jarptica [38.1K]

We are given

△ABC, m∠A=60° m∠C=45°, AB=8

Firstly, we will find all angles and sides

Calculation of angle B:

we know that sum of all angles is 180

m∠A+ m∠B+m∠C=180

we can plug values

60°+ m∠B+45°=180

m∠B=75°

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we can use law of sines

\frac{AB}{sin(C)}=\frac{BC}{sin(A)}

now, we can plug values

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BC=\frac{8}{sin(45)} \times sin(60)

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Calculation of AC:

\frac{AB}{sin(C)}=\frac{AC}{sin(B)}

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\frac{8}{sin(45)}=\frac{AC}{sin(75)}

AC=\frac{8}{sin(45)} \times sin(75)

AC=10.928

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p=AB+BC+AC

we can plug values

p=10.928+8+9.798

p=28.726

Area:

we can use formula

A=\frac{1}{2}AB \times AC \times sin(A)

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A=\frac{1}{2}8 \times 10.928 \times sin(60)

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3 years ago
Read 2 more answers
I need help on this homework
abruzzese [7]

Answer:

Tn=a(n-1)d

T50=261(50-1)-5

T50=12784

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3 years ago
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