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SVEN [57.7K]
3 years ago
11

The straight lines y = px + 9, where p is a constant, and y = ½ x – 1 are perpendicular. (a) State the value of p *​

Mathematics
1 answer:
REY [17]3 years ago
5 0

Answer:

14587676

Step-by-step explanation:

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Select the correct answer.
Radda [10]

Answer:

(-1\frac{1}{3}, 4\frac{3}{5})

Step-by-step explanation:

To find the exact solution, find the equation for each line. And solve for x and y.

To do this, represent each equation in the slope-intercept form, y = mx + b. Where m is the slope, and b is the y-intercept.

✍️Equation 1 for the line that slopes upwards from left to your right:

Slope = m = \frac{rise}{run} = \frac{2}{1} = 2

b = the point at which the y-axis is intercepted by the line = 7

Substitute m = 2 and b = 7 in y = mx + b

Equation 1 would be:

✔️y = 2x + 7

✍️Equation 2 for the line that slopes downwards from left to your right:

Slope = m = \frac{rise}{run} = -\frac{3}{1} = -3

b = the point at which the y-axis is intercepted by the line = 1

Substitute m = -3 and b = 1 in y = mx + b

✔️Equation 2 would be:

y = -3x + 1

✍️Solve for x and y:

✔️To solve for x, substitute y = -3x + 1 in equation 1.

y = 2x + 7

-3x + 1 = 2x + 7

Collect like terms

-3x - 2x = 7 - 1

-5x = 6

Divide both sides by -5

x = \frac{6}{-5} = -1\frac{1}{5}

✔️To solve for y, substitute x = -1⅕ in equation 2.

y = -3x + 1

y = -3\frac{-6}{5} + 1

y = \frac{18}{5} + 1

y = \frac{18 + 5}{5}

y = \frac{23}{5}

y = 4\frac{3}{5}

✅The exact solution would be: (-1\frac{1}{3}, 4\frac{3}{5})

3 0
3 years ago
A hotel room cost $79 per night. Meg's family is getting 2 rooms for 5 nights for their trip.
SCORPION-xisa [38]
$790 because it would be 79 times 10
6 0
3 years ago
Simplify this 9+ -4=
ddd [48]

Answer:

13

Step-by-step explanation:

<h3>13 the answer. that correct or what</h3>
5 0
3 years ago
Read 2 more answers
Plsssssss help<br>got 20 mins​<br>the question is: The sin of angle DCB is
Elena L [17]

Answer:

i. <DCB = 53.13^{o}

ii. Sin of <DCB = 0.8

Step-by-step explanation:

Let <DCB be represented by θ, so that;

Sin θ = \frac{opposite}{hypotenuse}

Thus from the given diagram, we have;

Sin θ = \frac{4}{5}

        = 0.8

This implies that,

θ = Sin^{-1} 0.8

   = 53.1301

θ = 53.13^{o}

Therefore, <DCB = 53.13^{o}.

So that,

Sin of <DCB = Sin 53.13^{o}

                    = 0.8

Sin of <DCB = 0.8

5 0
3 years ago
Help
geniusboy [140]

Answer:

1: 9 questions incorrect and 41 correct

2: There are a total of 35 students. 21 girls and 14 boys.

6 0
3 years ago
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