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3 years ago

Find the slope of a line perpendicular to y = 3x + 7.

Mathematics

2 answers:

tensa zangetsu [6.8K]3 years ago

7 0

Y=-1/3x+2.66 is what i got

avanturin [10]3 years ago

5 0

To create the perpendicular of a given slope, you use the negative of the slope's reciprocal.

The negative reciprocal of 3 is -1/3.

Therefore, the new slope would be -1/3.

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At a pizza shop, 80% of the customers order a pizza, 15% of the customers

Tamiku [17]

Answer:

0.85

Step-by-step explanation:

pizza and salad are 90%

pizza, salad and and both are 105%

so 90% out of 105%=0.85

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3 years ago

What is the answer to graphing this equation y= -4x

MAXImum [283]

Answer:

x=0

Step-by-step explanation:

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2 years ago

(x^3 -6x^2 -7x -9)/ (x-3)

maks197457 [2]

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2 years ago

Two cyclists, Alan and Brian, are racing around oval track of length 450m on the same direction simultaneously from the same poi

skelet666 [1.2K]

Answer:

Alan: 200 m/min

Brian: 150 m/min

Step-by-step explanation:

Given : Two cyclists, Alan and Brian, are racing around oval track of length 450m on the same direction simultaneously from the same point. Alan races around the track in 45 seconds before Brian does and overtakes him every 9 minutes.

To find : What are their rates, in meters per minute?

Solution :

Let n represent the number of laps that Alan completes in 9 minutes.

Then n-1 is the number of laps Brian completes.

45 seconds = 3/4 minutes.

The difference in their lap times in minutes per lap is

$\frac{9}{(n -1)}-\frac{9}{n} =\frac{3}{4}$

Solving the equation we get,

$\frac{9n-9n+9}{n(n -1)} =\frac{3}{4}$

$9\times 4=3\times n(n -1)$

$36=3\times n(n -1)$

$n^2-n-12=0$

$n^2-4n+3n-12=0$

$n(n-4)+3(n-4)=0$

$(n-4)(n+3)=0$

$n=4,-3$

Neglecting n=-3

So, n=4

Then Alan's speed in m/min is

$S=\frac{D}{T}$

$S_a=\frac{4\times 450}{9}$

$S_a=200 m/min$

Brian completes 3 laps in that 9-minute time, so his rate is

$S_b=\frac{3\times 450}{9}$

$S_b=150 m/min$

Therefore, Alan: 200 m/min

Brian: 150 m/min

4 0

3 years ago

The table shows the steps for solving the given inequality for x. 7x+16<−5(4−5x)7x+16<−5(4−5x) Select the reason for each

Hoochie [10]

7x +16 < -5(4 - 5x)....given
7x + 16 < -20 + 25x....distributive property
16 < -20 + 18x ... subtraction property
16 + 20 < 18x.....addition property
36 < 18x
36/18 < x.....division property
2 < x

7 0

3 years ago

Read 2 more answers