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Blizzard [7]
3 years ago
6

which equations represent the line that is perpendicular to the line 5x - 2y = -6 and passes through the point (5, -4) select al

l that apply

Mathematics
1 answer:
NARA [144]3 years ago
8 0

Answer:

the answers are A B AND D

Step-by-step explanation:

To find perpendicular lines you take the slope and change the sign and find the reciprocal. after doing that you set it up as a new equation that you will use to find b using the point.

in this case

y= - 2/5x +b

plug in the x and y values of the point (5, -4) to find b

b= -2

you put that together to get the equation

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lutik1710 [3]

Answer:

x = 15

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180, that is

3x - 10 + 6x + 5 + 4x - 10 = 180, simplify left side

13x - 15 = 180 ( add 15 to both sides )

13x = 195 ( divide both sides by 13 )

x = 15

3 0
3 years ago
The function V(r) = 4/3 pi r cubed can be used to find the volume of air
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3 years ago
Which statement about these triangles is true
steposvetlana [31]

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3 years ago
The value of a certain car decreases by 16% each year. What is the 1⁄2-life of the car?
svet-max [94.6K]

Answer:

The half life of the car is 3.98 years.

Step-by-step explanation:

The value of the car after t years is given by the following equation:

V(t) = V(0)(1-r)^{t}

In which V(0) is the initial value and r is the constant decay rate, as a decimal.

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This means that r = 0.16

So

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V(t) = V(0)(1-0.16)^{t}

V(t) = V(0)(0.84)^{t}

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This is t for which V(t) = 0.5V(0). So

V(t) = V(0)(0.84)^{t}

0.5V(0) = V(0)(0.84)^{t}

(0.84)^{t} = 0.5

\log{(0.84)^{t}} = \log{0.5}

t\log{0.84} = \log{0.5}

t = \frac{\log{0.5}}{\log{0.84}}

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The half life of the car is 3.98 years.

7 0
3 years ago
Bro whats is 3,972 divde 12
leonid [27]

Answer:

The answer would be 331.

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