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2 years ago

12

Which of these side lengths could form a triangle

2 answers:

tresset_1 [31]2 years ago

6 0

Answer:

C) 3 cm , 4 cm , 5 cm

Step-by-step explanation:

Using process of elimination and Pythagora's Theorem, find which of the smaller sides, when their squares are found equal to the largest number squared.

A, B, & D are wrong because:

A: 4 + 4 ≠ 16

B: 9 + 25 ≠ 100

D: 16 + 64 ≠ 225

BUT CON THE OTHER HAND 9 + 16 = 25

Ierofanga [76]2 years ago

6 0

Answer:

The answer is C.) 3cm, 4cm, 5cm

Step-by-step explanation:

The sum of any two sides of a triangle must be greater than the length of the third side. The only choice that fits this requirement is 3 cm, 4 cm, 5 cm.

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Solve the system<br> 4x + 2y = 10<br> x = y + 13

Maslowich

Answer:

$x = 6$

$y = -7$

Step-by-step explanation:

We have the system of equations:

$4x+2y=10\\x=y+13$

Let's solve by substituting. We know that $x=y+13$ , so we can substitute $y+13$ in as $x$ in the equation $4x+2y=10$ .

$4(y+13) + 2y = 10$

Simplify this down so that we have $y$ on one side of the equation:

$4y + 52 + 2y = 10\\\\6y + 52 = 10\\\\6y = -42\\\\y = -7$

Now that we know the value of $y$ , we can substitute it in to the equation $x = y+13$ to find $x$ .

$x = -7+13\\\\x = 6$

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3 years ago

The equation P=4s represents the perimeter P of a square with side length s. What is the perimeter of a square with a side lengt

PilotLPTM [1.2K]

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Step-by-step explanation:

s= side

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If m(x) = x2 + 3 and n(x) = 5x + 9, which expression is equivalent to (mn)(x)?

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(x^2 +3)(5x+9)

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