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vredina [299]
4 years ago
9

Line A: y = 1/2x+2

Mathematics
1 answer:
hammer [34]4 years ago
7 0

Lines B and C are perpendicular ⇒ answer C

Step-by-step explanation:

The product of the slopes of the perpendicular line is -1

The slopes of the parallel lines are equal

The slopes of two lines are m_{1} and m_{2}

1. If m_{1} × m_{2} = -1, then the two lines are perpendicular

2. If m_{1} = m_{2} , the the two lines are parallel

The equation of a line in slope-intercept form is y = m x + c, where m is

the slope of the line

Line A: y = \frac{1}{2} x + 2

The slope of the line is m_{A} = \frac{1}{2}

Line B: y = -\frac{1}{2} x + 7

The slope of the line is m_{B} = -\frac{1}{2}

Line C: y = 2 x + 4

The slope of the line is m_{C} = 2

Line D: \frac{1}{2} x + \frac{5}{4}

The slope of the line is m_{D} = \frac{1}{2}

∵ m_{B} = -\frac{1}{2}

∵ m_{C} = 2

∵ -\frac{1}{2} × 2 = -1

∴ Line B and Line C are perpendicular because the product of their

   slopes is -1

Lines B and C are perpendicular

Learn more:

You can learn more about slope in brainly.com/question/4152194

#LearnwithBrainly

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Mom buys a phone on hire purchase.First she pays a deposit of $100,followed by 12 monthly installments of $80 each How much mone
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Answer:

She pays $1060 for the phone.

Step-by-step explanation:

Deposit = $100

She pays $80 each month for a year. $80 x 12 = $960. Then we need to add the deposit with the monthly instalments to find the total. $100 + $960 = $1060

Total:

$1060

3 0
3 years ago
9 by the power of 2 x 2-4 by the power of 2
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Answer:

1

Step-by-step explanation:

7 0
3 years ago
a hot air balloon holds 3,249 cubic meters kf helium. the density of the helium is 0.1785 kilograms per cubic meter. how many ki
Radda [10]
TO determine the mass of the helium in the balloon, we make use of the density of the gas that is given in the problem and the volume of helium that is present. <span>Density is a property of a material which describes the mass of a material per unit volume. By multiplying the volume to density, we get the mass of the helium gas in the balloon. We do as follows:

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4 0
3 years ago
A service call to repair a washing machine costs $35 plus $20 per hour. Raphael ‘s machine took 2 hour to fix. How much did the
Lady bird [3.3K]

There is a mandatory fixed rate of $ 35 that Raphael will have to pay once the service call has been made. This fixed rate is the constant.

The per hour rate is $20. Suppose the machine took "x" hours to get fixed. Then the variable part of the repair cost will be 20x.

Thus, Repair Cost=Fixed Rate Cost+Variable Cost

Or, y=35+20x where y is the total repair cost. Thus, if Raphael ‘s machine took 2 hour to fix, the repair cost is:

y=35+20\times 2=35+40=75 dollars.

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5 0
3 years ago
Read 2 more answers
the arlington drama club is selling tickets to an upcoming play. They can sell at most 250 tickets. The adult tickets for $15 ea
allochka39001 [22]

Number of adult tickets = 75

Number of student tickets = 175

Solution:

Let x represents the number of adult tickets and

y represents the number of student tickets.

Total number of tickets sold = 250

⇒ x + y = 250 – – – – (1)

Cost of adult ticket = $15

Cost of student ticket = $5

Total cost of collection = $2000

15x + 5y = 2000 – – – – (2)

Multiply equation (1) by 5

⇒ (1) × 5  5x + 5y = 1250 – – – – (3)

Subtract equation (3) from equation (2), we get

15x + 5y – 5x – 5y = 2000 – 1250

⇒ 10x = 750

⇒ x = 75

Substitute x = 75 in equation (1), we get

⇒ 75 + y = 250

⇒ y = 250 – 75

⇒ y = 175

Number of adult tickets = 75

Number of student tickets = 175

6 0
3 years ago
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