2 years ago

Difference of 3 times c and 7

Mathematics

1 answer:

guajiro [1.7K]2 years ago

3 0

Answer:

It could be anything more than 7

Step-by-step explanation:

3 x 7 - c or 3(c-7)

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Lydia graphed ΔXYZ at the coordinates X (0, −4), Y (2, −3), and Z (2, −6). She thinks ΔXYZ is a right triangle. Is Lydia's asser

katrin [286]

Answer:

Option (4)

Step-by-step explanation:

Vertices of the triangle are X(0, -4), Y(2, -3) and Z(2, -6).

Slope of XY ( $m_{1}$ ) = $\frac{y-y'}{x-x'}$

= $\frac{-3+4}{2-0}$

( $m_{1}$ ) = $\frac{1}{2}$

Similarly, slope of XZ ( $m_{2}$ ) = $\frac{-6+4}{2-0}$

( $m_{2}$ ) = (-1)

$m_{1}\times m_{2}=-\frac{1}{2}$

Which should be (-1) if XY and XZ are perpendicular to each other.

Now we can say that XY and XZ are not perpendicular.

Therefore, Lydia's assertion that ΔXYZ is a right triangle is not correct.

Option (4) will be the answer.

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2 years ago

Plz help brainiest to the correct answer!

zysi [14]

Answer is highlighted in brown. Hope this helps.

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2 years ago

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(x³-2x²-5x-2) ÷ (x+1)

riadik2000 [5.3K]

Answer:

x2−3x−2

Step-by-step explanation:

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3 years ago

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The cheaper option saves you $0.89.

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3 years ago

What are the excluded values? 0 and 15 3 and -5 -3 and 5

Dima020 [189]

Answer:

x=5 x = -3

Step-by-step explanation:

-7 / ( x^2 -2x -15)

Factor the denominator

-7

----

(x-5) ( x+3)

The excluded values are when the denominator is equal to zero

(x-5) (x+3) =0

x-5 =0 x+3=0

x=5 x = -3

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3 years ago