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3 years ago

A triangle has two sides of lengths 4 and 7. What value could the length of

Mathematics

1 answer:

Tema [17]3 years ago

3 0

Answer:

B. 5

D. 9

F. 7

Step-by-step explanation:

A triangle has sides a,b and c:

And a < b+c , b < a+c and c < b+a

Here, a = 4 and b = 7

Find c?

So, 4 < 7+c , 7 < 4+c and c < 4+7=11

A. 11 False, it doesn't satisfies inequality third

B. 5 True

C. 17 False, it doesn't satisfies inequality third

D. 9 True

E. 3 Not true it doesn't satisfies second inequality

F. 7 True

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Step-by-step explanation:

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Answer:

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3 years ago

The costs of 5 similar digital cameras and 3 similar video cameras is $3,213. Each video camera costs 4 times as much as each di

mariarad [96]

Let,
digital cameras be "x"
video cameras be "y"
Now,
According to the question,
5x + 3y = $3,213..................................................equation (1)
y = 4x..................................................................equation (2)

Taking equation (1)
5x + 3y = $3,213
Substituting the value of "y" from equation (2), we get,
5x + 3(4x) = $3,213
5x + 12x = $3,213
17x = $3,213
x = $3,213 / 17
x = $189

Taking equation (2)
y = 4x
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Answer:

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Step-by-step explanation:

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